implicit scheme
[计] 隐格式
.简简单单之真~~幸幸福福之美~~ ...
vortex method
implicit scheme
explicit scheme ...
基于140个网页-
泛函分析专业英语词汇翻译 ...
semi-iterative method
半迭代过程
semi-iterative process
半线性抛物型方程
semilinear parabolic equation
基于14个网页-
考虑下面的线性平流方程 0 = ? ? + ? ? x u c t u (1) 这个方程的一个差分格式是隐式格式(implicit scheme)： 0 2 2 2 1 1 1 1 1 1 1 = ? ? ? ? ? ? ? ? ? - + ? - + ? - - + + - + + + x u u x u u c t u u n j n j n j...
基于5个网页-
基于1个网页-
隐式LU分解
修正隐式Temam格式
隐式TVD格式
隐式迭代格式
隐式辛格式
隐式积分方法
线性隐式差分格式&广义组合
加权隐格式
隐式差分格式
隐式差分法
双层隐格式
更多收起网络短语
- 引用次数：6
For computational model, an implicit scheme ispresented. A parameter factor is introduced into the lattice Boltzmann equation and theparameter factor is independent with the relaxation time factor.
在计算模型上,提出了一种新的隐格式计算模型,在演化方程中增加了参数因子,并且该参数与松弛时间因子独立。
参考来源 - 流体流动的格子Boltzmann方法
- 引用次数：4
参考来源 - Boltzmann模型方程数值算法在槽道流问题中的应用研究
- 引用次数：5
The diffusion term was discretized by cell-based finite volume method (FVM), and the second order accuracy. The unsteady term was discretized by implicit scheme.
导热控制方程中扩散项的离散采用基元有限容积法,二阶精度;非稳态项的离散,采用全隐格式;源项的离散,将相变过程中的潜热视为移动的热源。
参考来源 - 结构化网格中冰水相变传热过程的数值计算
&2,447,543篇论文数据，部分数据来源于
Implicit scheme is adopted in the normal marching direction, so the choice of grid distance is arbitrary.
在法向推进方向，采用了隐式格式，使得网格推进步长的大小不受稳定性条件的限制。
For solution of heat transfer equation in fuel rods the implicit scheme of through counting in combination with method of running is used.
燃料棒内的热传递方程式的解法采用了全程计算的隐式法与运行法的结合。
By use of implicit scheme, exit and wall temperature varying with time in air- precooled heat exchanger for compound engine are extracted.
利用隐式格式，求得组合发动机空气预冷换热器随时间而变的出口及壁面温度。
Despite recent turbulence in the markets, returns in Chile over the 17-year life of the scheme have greatly exceeded the derisory returns implicit in the earlier pay-as-you-go system.
The reforms would also create a deposit-insurance scheme: at the moment only deposits at Sberbank, the country's biggest bank, enjoy an implicit guarantee, because it is owned by the state.
$firstVoiceSent
- 来自原声例句
请问您想要如何调整此模块？
感谢您的反馈，我们会尽快进行适当修改！
请问您想要如何调整此模块？
感谢您的反馈，我们会尽快进行适当修改！OALib Journal期刊
费用：600人民币/ 99美元
查看量下载量
The Functioning of the Directive Team during an Institutional Self-Assessment Process, in the Quality Assurance of School Management Policy Framework in Chile
Keywords: ,,,
The research presented in this article describes the functioning of ten leadershipteams that were engaged in the institutional self evaluation componentof the System for Quality Assurance of School Management. Qualitativemethods of multiple case studies were used to document how leadershipteams described their own work over time. Results showed that the mainchange observed was that the teams learned how to work together with therest of the school community. The documented changes, however, did notlead to the adoption of a culture oriented towards evaluation for continuousimprovement. The discussion presents a model that describes the variousphases of the team′s process and beliefs, as well the factors that facilitatedor hindered the self assessment process.
Please enable JavaScript to view the
&&&OALib Suggest
Live SupportAsk us anythingReferences13.78 · NHMP training institute, PakistanAbstractThe mixing flow field of two-parallel and non parallel gaseous streams has been studied numerically. The streams are of air and hydrogen and come into contact after passing over a finite thickness base. The two gas streams are delivered from a high-pressure reservoir and entering into the domain with atmospheric pressure. The two-dimensional unsteady Navier-Stokes equations, energy, mass diffusion and species continuity equations are numerically simulated to analyze the mixing layer in supersonic flow field. An explicit Harten-Yee Non-MUSCL Modified flux-type TVD (total variation diminishing) scheme is used to solve the system of equations. An algebraic turbulence model is used to calculate the eddy viscosity coefficient. Keeping constant the inlet pressure and velocity of the streams, the merging angle is varied to observe the physics of flow fields, mixing of two-streams and mixing efficiency. The results show that the increase of merging angle causes stronger interactions between two streams, high momentum exchange and eventually enhancement of mixing between two streams.Discover the world's research11+ million members100+ million publications100k+ research projects
Engineering
(C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).Peer-review under responsibility of organizing committee of the 6th BSME International Conference on Thermal Engineering (ICTE 2014)doi: 10.1016/j.proeng. ScienceDirectAvailable online at *?&?+,-??.?????????????/??(??????????!&???????????????????./!?????0???&&??????(??$???????????1??????????????????????????????????????????????????????%?????&??2?????-?&??????#??34?!#5-67?8$%??&4?,???&????#???4?-?9$???$??.????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????!&????1????(????(??????(?????????????????????? ??????????????$??????????&???%???? ??$??????$????????&??!&?????????????? ?(?????????&&??????????????????????????????(???????????????????(???????&??2?????%?????!&????????????????????????????????(??????&??&??????$????????????? ???? ????????? ????? ?&?? ??????? ???&? ??????&????? ?????$???? !&?? ???????????????? $??????&? 7??????,??2??? ?:$??????4??????&4????????(($???????????????????????$??&??:$????????????$????????&????$?????????????&)???&????1??????&???????$?????????(????(?????? #???1??????? ;??????&??? 7???-=,/&?-???(???? (?$1??&??? !&?? ????????????????????????&????? ??&???????$????????????? ?&???&??????(??:$????????#??????%??????$?%$???????????????$???????????$??????&?????&?????????&????((????????@?????????????????&?????????????$??????????????&??(??&?????????4??&??????????????????????????????%???????&???&&??????(?(????(?????4???1?????(???????????????????1?????((??????&?? !&?????$?????&??? ?&??? ?&?? ??????????(? ????????????????$???? ????????? ?????????????%??????? ???? ???????4?&??&???????$???1?&??????????????$???&???&??????????(???1????%???????????????????? ??????!&??#$?&??????$%???&???%&??????????&????????????????$?????????????%????&??(???????)???????????????(??&??*?&?+,-?.?????????????/??(??????????!&???????????????????./!?????0??? ??!????&?,$????????????%$????4???1???4??&??????&???4??????????????A?????????????????!$?%$???????1???? ??&???????$?????(???? (???????(????&? ?????????????????????????????4? ???%$???????&??%???4???????1????(????????$?%???????%$?????4??&?????????????4?????$???????&??????????(????????????????????$????&4??&????1?????(??????????? ???? ?&???? ????????? ???%$?????? ??? ?$????????? ???%$?????? ???B??? ??????B???? ???????? &??? ?????? ??????????3?/??????????????$?&????!???C?D??????E??F0??*A?(?1C?D???????*?E?0*???#????????????&?????G???%$??????%??(C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).Peer-review under responsibility of organizing committee of the 6th BSME International Conference on Thermal Engineering (ICTE 2014)
295 Mohammad Ali et al.
Procedia Engineering
294 – 301 ?????????? ?(? ???????? ???????????? .?? ?$????????? ???%$?????? ?&?????4? ?&?? (???? ??????? ???? ??? &??&? ?&??? ?&?? ($??? ?????1???)???&?????????????????????1??!&???&??????&???????????$????&?$????%???????$?$???&?????????????????????????1?????!&??&??&??? ?&?? -??&? ?$?%??4??&?? ??????? ?????&? ??? ??2??? (??? ?&?? ?&?????? &??????? %?????? $????%???? !&??? ???$???? ??1?????????????&???????????????????&??,??????????(??$?????????(? ???%$?????&????%??????$???????? ???2??&????&??????????(???1?????5???????&?????????4????????????%??:$???&?????1????????$?????????&?? ??????(??&?????????&?????????????$???&??????$?&???? ??????????????$????????????????????? ????????&?? ????????????????4???2????????&??????4? ?????$????????4??????????????????????????((????????&????????????????????1?????((??????&???5$???$??????????H?I????(??????????????????????????????????????$???????????$????????(??&?? ?????????????1?????(??????$???????????????????????????(??????!&?&????$?????????$??????????&??????&?????????????????????????&???????(??????????????????0????&??&?????$???? (?$1? ?????????? ?????????? ???????&?? ??????????? ???? ??(($????? ?????????? ???????????/??????????? ????? ????? (??? ?&?? ????????&4? ??????&? ???? ?????$??? ?????$?? ?(? ???(????? ???? $????(????? ?&???? ??&????J???$2???? ???? H?I? ???(???????$???????????$??????? ?(??&????1?????(? ?????$????????????????? ?(? ????????? ????? 1?E???(????(????????????????? ???????? ???????&? ???(???? ?(? ?&????????????? ??????? !&?&? ??????? ?$???? ?:$????????????$??????&???((??????(???????&4????????&??????????$??????????????????1?????+?????????K??&2??HEI??1???????????&???????????????&???((??????(???????&??????? ??????????$?%$????? ??1????%??????????? ?????????(? ??((?????????????.?? ?????%????????&??4?(??????? ??????? ?(? ?????????? ??? ?&?? ???? ???????4? ?&?? ??1???? ??&??? ???? ?????????? %&? ?????? ??&?????? ???$??$????? !&???????$??$???? ????? ??????????? ??? ?????&?????????? ?????4? ???? ?????????? ?&???? ??)??? ???? ??????? ?????????$?$??&? %&? ?&???????????(?????????????????&?????&%????????????????????&$??????K??&2??H0I??%????????&????&??????????????????????????????????-??&??$?%???%$????????????????? ?????????????????&????????????!&??????? ?????????????????? ???&??&???1??????????????$?????(???%????????????H?I??????((???????????????(??$??????????$?%$?????(??????#??? ??? ???? H*I? ??$????? ?&?? ??1???? ???&??????4? ????????????? ?&?? ??1???? ?&?????????????? (??? ???????? (???????(??$???????????? ?%????????&?????????$??????? ??? (????(????????? ???&??????????????????? ????&????1??????&??????????!&?? ?$?&????(?$??? ?&??? ?&?? ?????? ???(??$????????(? ???? ??????? ??$??? ???&? ??? ?????????? ????? ??? ?&?? ??&????????? ?(???1?????.?????????&?????????????????#??????????H?I???$??????&???&&??????(???1????????????????????????$?????????????????????&??????&?????1??????????&??????%???%&??&???????$??????(($???????????????&??7??????,??2????:$????????5????????????? +?$???????? H?I? (?$??? ?&??? ????????? ??? ??B?????? ???? ?&??2????? ???$????? ??? ?????????? ?&???? ??&??? ?&??2????? ??????????????????????$??? ??????? %???$????(??&??????????? ?????????????? ?&??2??? !&?&??????(?$????&??? ????????? ??? ??1??????&????&??2?????????????&?????????(???????((????????&????1?????((??????&??#??????????HFI???????????????&????1??????&???(????????&?????$?? ?&?? ??&??????????(???1????%&????&???? ?&????????????&??(? ???? ????????.??????(?$??? ?&??? ?&?? (?????????????(??$?????????(? ??1???? ??&???????????&???? ?????????? ??????????1?????.?? ????&??? ??????????????5$???$?????? ???? H??I???$??????&?? ?((?????(?%?$((? ???????%????????? ??1??????&?????????????$??????????&???? ??&?????!&?&??%??????? ?&????&???&??????&???%??????$????%???(???????&??????&??&??????????????%??&??#???????$??4??? ?????????$????(??????????????1???????$??????&????&???????&??(??&??????????#)???????.?????H??I??????????????????????1??????&????(?????????????????????????????? ?????????(? ???? ????????? !&?? ?$?&???? ????????? ?&???%? ?&??&???? ?(? ??1???? ??&???? ?????(?$??? ??? ????????? ????????&????&???????????????????&??????4??&?$?&??&?&?????????????????&??&??&?????????????-??&???&???????????????????????(?$????&????????????%????&4??&????????)???%&??&???&??????&????????&?????????$??????&????????????((????????&???$???????????1?????(??&???????????????.???&??????????????????&4??$??????????????????????????$???????????1??????&????&???%???????(??????%&????????????????????????? $??????&? 7??????,??2????:$??????4? ?????&? ?:$?????4? ????? ??(($????? ?:$?????? ???? ??????$??&? ?:$???????!&?????%??????? ??(????? %&??????????????????????????? ????? ?? (???????&??2?????%???????E? ???? ???(????? %???????????????????????????? !&?? ????????????(? -??&?0????????? ?&?? $???????????(? ?&??%?????????????? ?&?? &&???????????????(? -??&???????$????????&??&??%??????????????&???????J???????#(???????????????(?????&??%???4??&??????????(?????&??????&??????????1????&????? ????&????&???$?$???&????$??? ??????%$??????!&?????$?&? &??? %?????????(??? ?&?? (????????????????C????? ?????????????&????1?????((???????????(????$????????????%$???????????????????$?&??&???&&??????(?(?$????&???????????$??????&??2?????? ?$?%$???????!&?? ???????????$????????????????????&? ???????(? ?&???????$??&&?????????????? ????????&????%????2?????????????????&???????$????(????????????????????????&??!&??????????????????????????(??????L???M????&??&?????????????(??M?(????&?????$?&??!&??????$?????????(?(????(????????&???((???????????????????????????????????????????????????????????M?4???????? ????????????????M?4??????E? ?????????????????M?4?????? 0? ?????????????????M?4?????????? ?? ?????????????????M?????
Mohammad Ali et al.
Procedia Engineering
294 – 301 ;&????????????????????&???????????????????????????#???J??????+???????E?????N????????? ????????? ??????????J??????,?????????????????(??&??????$???????????????????????????????????!?&#??????#$???????????????????%??????????????!&??(???????????????$??&??:$?????4?7??????,??2????:$?????4??????&??:$?????????????????(($??????:$??????????$??????????????&??(????(??????&????%??&?(?????????????????????+?????,?????-,?????&?????????????&&&&&& ?????????.?????#/???????-,?????&???O??????????C?&&&&&&&&&&???????????????????????????????????????????????????????????????????&?/????????C????&&&&&&&&&&???????????????????????????????????????????-,?????&???????????&()()(&)&(&)&&&???????????????????????????? ?????????????????????????/?????????????,?????-,?????&??????????????????????????????&&&&&&&&&&???????????????????????????!&?? ???? ???? %?????? %?$???????? ?(? ?&?? ????$????????? ??????? ???? ??????????? ??? ?????? ??????? #? 7??????,??2???????&???? ???????? ?&??? ?&?? ??????? ???? ??????????? ???????&? ??????????? ???? )???? ??? ?&?? ??????? !&?? ?????? ???????$???????%???&??????&?????%????4?????&??????? ???0??????.?(????%?$????&???????????????? $??????? ?&????(??%?$????&??(??&??????$?????????????????!&????(??????????????????$????????????&?($??&????????????$?%$?????%?$????&???&?????&??&????2??????????????&??$?&?$???&??????$?????????!&???$?(????%?$????&?????????????O?P?&????????????????????%??)?????????????(????????????%?????
297 Mohammad Ali et al.
Procedia Engineering
294 – 301 *???#??????????+??????????1???&????????????,????????????J??$??? ?? ?&???? ?&?? ???????&? ???????? ???&? ???????????? %?&???? ?&?? (?????? %???? (??? ????? ?L??? .?? J??? ???L?????????$???????????%???%???????%?&?????&???&??2?????%?????!&?????????????????????????&????&????????$??????????????????%&??&??&&??????? (????? !&???????????(?&&??????? ????&????????$??????? ??2???????????????????????&????? ??????(?????????Q??$??????&??&??&???????$???(???????????????????????????????????????????????????????????????????????????????????????? ????J??????&?????????????????????????????????????(??????(????????$??????????????(??????????????,-.???? ????? ,-.???? ????? ,-.???? ????? ,-.???? ????? /-.,-.???? ????? #???;??&?&??0??#1?????????????P??Q?&?&?0??#1????????????? ??&?&?0??#1*???????????????&?&?0??#1???????????? ??&#&?0??#1 ???????????????
Mohammad Ali et al.
Procedia Engineering
294 – 301 ?J??$???????? ?&?????&??? ?&???&??????&??? ??1???????????? ??????????????&????????$???????????????(????%???? $??????&?????????????????$????????1??????&????O?;?P?????4??&??&?????&???????&???????????!&???(???4??&????????(???????$???????)??????? ???????????????????&??? ????????R??&??&?? ???????????(????????????????&????)???(? ??????$????????????????4?%$???&????????????????? J???? ???L?????????????&???????? &&??????? ?????$????????????????&??$????? ????? ?(??&????????$?????????????? ???? ??2?? ????????? ???????? ???&? ?&?? ???? ???????? ,?? ??????? ????????????? ???? ?????$???&?????? ?????$???? ?????????????????(($??????(?&&??????????$?????&??&????????????????????????????????????????????????J????E??-????(?????????????$???(?&&???????S??????4???F?4???????(?????((??????????????1?(?/??,??,????????????????????!&???????(?????????????$?????????????$??$????(?(?????&??????&????????????%&??&????1?????(??&???????????????J??$???E??&?????&???????(?????????????$????(?&&???????(??? ?????$??????????????!&???????(?????????(?&&????????????????%?????????????? ??F?? ???? ?&?? ?????$?? ????????????(??????F?????????? ???????? ?&?? $????? ??????!&?????????????(? ????? (????????%??????????? ??B???????????$???????? ?????????#?? ??????????????4??? ?&???%??????? ????????(????&?;? P? ??0?????????? ????&??????????(??&???????????????,??????&??&&???????&??????????????$???&????&????(??&??????????????????????????????????)?????/???????????????/??????4?&&??????????$????????????????????&?? (????(?????? J???&??&???????$???&???1?????????(???????? ???? ???????????????.??????%?? ???????? ?$???&????&?????????????$???? ?(? &&??????????????????? ???? ???????????????4????????????&???$?????&??&????????$????(?&&????????&???&??????&?????(??????????????&?$??????(????????????M??????????????????J??????????L???&???&??????&?????(??????????????&??????????&??%????????????$?????&??&??????????????$???(??????J??????? ?????4?????????????????(?&&????????????????????&??&?????????????????????????????/????????? %?????&??2??????&????(???????? ?(? ???? ??????? ?????????? ???&? ?&?? ????????? ?(? ???????? ?????? ???? ??? (??? ??????????? ???? ?&?? ?&???? ??&??????(????? ???????? ?&?? $????? %?$????&?? !&?? ???? &&????&?????? ?((????? ???? (?$??C? (?????&4? ?&?? ????? ?1???????? ?(?/-.,-.?
???0??#1???0??#1??/-.,-.?
???0??#1*??0??#1???0??#1 ?
299 Mohammad Ali et al.
Procedia Engineering
294 – 301 &&???????(??? ???????????????????4????????????&4? ?&?????&????$??? ?(??&??????&???(???&??&??? ????????????????T$???(??&???? ???4? &??&??? ???????? ?????? ??$???? ??????? ???????????? ???? ?????????? (??? ??????????? ?(? ??1???? ?((??????&?? .?????????????????????????????????4? &????&??(????(????????$??$?????????((?????? %&??&???????$??? ?????????????????????????4??&??????$?????????????????&?$???%??????????$?&???????????&???&??????&??????%??????$????%???????????????????????????????????????????J????0??-??&??$?%????????$??(???/?????L????1?1???????,?2??????!???????-??&??$?%????????$??????????????????????(???????????????????(??&??(????(??????&???????????????????&???????J????0?(??? ?????? ?L??? !&?? (???? ?&??????&???? ???? %?? ?????&? ???????)??? %&? ?&?? ?????? ?????$?? ?????? ??? ?&???? (??$??????$?? ???&??&??? ??????$?? ?(? ???4? ?&?? (???? ?&???? ??&??? (??????? ??????&?? ????? ??? ??????? ???&?$?? ??&? ????$?%????? %&? ????????*??
?? ???2 ??? /-.,-.?????? ?*??
*? *?? *??
*?? ?? ? ??? ???
?? ????? /-.,-.?????? ?*??
*? **?? *?? ??2
?? ??? ??? ???
?? ??2 ??? /-.,-.?????? ?*??
*?2 *?? *?? *?? ??2
??? ?? ??2 ??2
??2 ??2 ??? ?? /-.,-.?????? ?*??
???2 *?? ?? ???? ??2
??2 ???? ?? /-.,-.?????? ???????????????????????????????????????????????????????????????????????????????? ? ????????????????????????????#???;??
Mohammad Ali et al.
Procedia Engineering
294 – 301 ??????? .?? ??&??? ?????? ?&?? ???&? ???$??? ?(? ?&???? ??&??? ???? %?? (?$??? ???&? ????????? ??(???????? ?????? ??? ?&?? %?????&??2??????!&??(????? ???????????(?????????(? ???? ????????????????%??????? ??? ?&??&&???????(???? ???? ?????:$????&??&??-??&??$?%????(?&&??????? ?????????? (???? ?$????????? ??? ?$%?????? ??? (?$??? ??? J????0??L???? #??(???????????????&????(?????????(??&??????&??????$??? ????????$???????????????4???$?????1?????????(?&&?????????????????? ?????$???&??&?????????&??????????????%???$??????????T???&????&???&???4??&??$?????(?????(????????????&???$?????????????(???????????&??-??&??$?%?????? ?????1??????&???????????&??$?&??&??(????(??????.???????$?????????&??$??????&???????????????????(????????? &&??????? ?????? ?&?? ???????? ?????? ??? )?????? ;??????? (??? ?&?? ??&??? ?????? ?&?? -??&? ?$?%??? ?????????? ??? (???????????????$??????&?????????????(?(??????????????1?????????(?(?????#????????????L?4??&??-??&??$?%????(??????????1??$???????????? ?&?????&??????????????????? ?&????1??$???.?? ?&?????????&???????????????????????????$?????$?????&??&?????1?????????&????1??$???1?????????(?(???????(??????????????????????????????????J???????-?1?????((??????&?%????????(?????%????&???????(?????((??????????????1?3???4???????????????-?1???? ?((??????&? &??? %???? ????$?????? ??? ?&?? %????? ?(? (?????%????&? ??????? ?(? &&??????? ???? ????? ,?4? ??? ?&??????$????????(???1?????((??????&??&?????????&???????&???????(????????????????(?&&???????(?????????????????&???%??????2??? ????? ???????????????!&?? ??1???? ?(? &&??????? ??? ???? ????%?? ???$????? %&? ?????? ?(? ???? ???????????? %??????????????????4???????$?%$??????????????????????$???????????$??????????????????&??(??&??(???4?????????? ?????$??????(($??????$???????????&??????????? !&?? ???(???????? ?(???((??????????????? ????$????? %&? ????$????????&????1?????((??????&?? J??$??? ???&???? ?&?? ??1???? ?((??????&? ?????? ?&?? ?&&?????? ?????? (??? ?&?? ??((?????? ?????? ?(? ?&?? ???????? ?$???????? ??$?&??5???????&4?????&??$??????????????4??&??????????????(???1???????&??&????????????????????????????&???????J??????????????&????1?????((??????&????????????&????&?B$???%?&?????&??%?????$??????1????????%?&?????&???&???%??????????????$????????!&????????(???????????????((??????&?($??&??????$????$??????&???????????????(???????????????.??????????????&????1??????????&? ?????? ????1???? ?&??????&??? %???$??? ???2? ?????$???? ??(($??????$?? ??? ?$????????? ???$??? ?(? ?&?? (?????J??$??? ???&?????&??????O?;P? ???&????1???? ?((???????????(? ?&?????????4? ?4?E4?0??????? ?????????1??????&????4?*??4????4??????????????U4????????????&4?????4???1?????((??????&??????????????&??&?? ??????????(? ???????????????!&??????$??? ???????????(???1????????%??(?$???(???????????????????0??????$?????&?&??&????????????(???1????????%??(?$???(?????????0????????????R??&??&????????(??&??????&????&???????????%??????????????(???1????????%??(?$????????????????????????????????(?O?;?/-.?
???0??# ??0??# ??0??# ?*0??# ??0??# ? 0??#???0??#???0??#?*?0??#???0??#? ?3?455???#??%????#?????5??????????%????????
301 Mohammad Ali et al.
Procedia Engineering
294 – 301 P?E??????0????#??(?????????????4??????? E4? 0? ???? ?? &???? ?????? ?????????? ?(? ??1???? ??? ?&?? ?&???? ??&???? ? /???? ?? &??????????????????? ???????????(???1?????????? ?&???????&??.???&?? (????(??????&????1??$?? ?((??????&?????%?$????U? ???????$?????????????????$?????%?$????&?????0????????????????((??????? ??1???? ??? ?&????? ??:$??????(??? ????? ???%$?????? (??? ?? ?$????????? ???%$?????? -??&? ?1?????????4? ???????? ??? ?&?????????? ???? ?$???????? ??$?????&???? %???? ????$????? ??? ??1???4? ????????? ???? ???%$?????? ??? ?$?????????(????? .?? ?$????????? ???%$?????4? &??&? ???????????? ???? ??1???? ?(? ($??? ???&? ?1???)??? ??? ??((??$??? ?$?? ??? ?&???? ?&?????????????????????????%$??????.???&????????????$?&??&?? ?((??????(??????????????????????? (??????L???M????? ?$???????????1????&????%??????$???????$?????(??????%???4?&&????????????????1?????%?&?????&??%?????????????????????????????????????????????$???????????????+??&?&&??????????????????????????????????&???&???????????2??%?&????%?????!&?????????&??????????$???????????????????&???(????&&???????&????$?&????????????????????&????????$?????????&??&???(($??????+&????&?????????????????????&???%????(?$????&??4?????????????%????????&???????????????????????? ???&???????????(???????????????%$???&????????(? ??????$??????????????????+&??&????????????????????????(??&????????$?????????????4????&???%????(?$????&??????&?$?&???????$???????????? ?????????? ???&? ?&????????????(??????????????4? &??&? ???$??? ?(? &&????????????????????&????????$??????? ??????? ???? ?????$???&? ??1???? ?((??????&? ??????????? ?$?? ??? &??&? ???????????? ?(? ?&?? ???????? &??&???????$???1?&????????$????????????$???&? &??&? ??1???? ???$??? ??? $???????? (??? &??&? ???????????????T???&????&???&???4????????????????1??????????????((????????????????????????????????(??????????????????????????????? ???#5#?#??#??H?I? 5$???$??4?K?;?4? 5????????4? J?? J?? &?$??4?!?? K?? T???4? ??? ,?? @?????&????&4?@?? ???? +????4? 8????4? V-?1???? ??&???????????? ,$????????? ,&????&?&???W4??F??4?#.##?????E?E??H?I? J???$24?+?4?T???4????,??????@?????&????&4?@?4?V7$????????,??$?????????(??&?????$??$????(??$??????????&??????&???W4??&&??????(?J?$???4?#4?&????E4?7????????FF??4????????*???F???HEI? +????4?5?&?4?????K??&2?4?#?4?VT????????&??((?????????&?????,??$??$??????!$?%$?????-?1????&?&???W4?8?$??????(?J?$???-??&?????4?&????*04?7???0???F?0?4???????????*??H0I? ????????&$????4?????K??&2?4? #?4?V!&??/????????%???!$?%$?????,&???? &?&??C?#???1???????????,?$?&W4?8?$??????(?J?$???-??&?????4? &?????F????F???4?????0?E?0????H?I? ??%????4? 8?4? ?$????4???4? &?$????4? ;?4? -????4?-? ???? ?$???$??4? 8?4? V/????????%????&? #??? ,??$??$??? T(? !$?%$??????.?? ,$????????? ,&????J????W4??,???5????????#6?,?????&?????F???????4??????F??*?0??H*I?? #??4?-??J$B?????4?!??????&?%????4?8???4?V.?(?$??????(??-????J??????????/??(??$??????????-?1????????J?????;??????????!??????????.?B????????????,$?????????#???,?????W4?.?????????????8?$??????(?????????????,??????4?&????E????????4??????*????????H?I? #??4?-??J$B?????4?!???????????)4?#?4?V#?7$????????,?$?&?????&???&&??????(?-?1???????!???????????????,$?????????,?????W4?.??????8?$??????(?????????????????-?????????,???????4?&????F???????4?????????????H?I? 5????????4????????+?$???????4???4?V7$????????.??????????????(?;&??????? .?B????????????? ,$?????????#??(????W4?8?$????? ?(?????$??????X??????4?&?????*???????4???????????HFI? #??4?-?? ???? .????4?#?@?-?,?4? ?FFF4?V?((???? ?(? -????(???? .????? R???&???? ???????????????? -?1???? ?(? ;&?????????? ,????B???/??%$????W4???????????????(??&?????&?&?#?????/?????????(?J?$???-??&?????4?????*0??*??4??????%???*???4?,&??)&??4?/&?????H??I? 5$???$??4? K?;?? 5????????4? J?? J??&?$??4? !?? K?? T???4? ??? ,?? @?????&????&4?@?? ???? +????4? 8?? ??4?V-?1???? ??&????????? ??? ,$?????????,&????&?&???C? ..?? ?((???? ?(? +?$((? /?????? +?????W4? &?%??????&? (??? /???$????????? ?&&????? ???? J?$??? ?&??????4? 7????? K??????&? &?%??????&4?R??&??????4???/?4?K?????????E????H??I? #)??4?-??#??????.????4?#?@?-?,?4?V??????-?1????&?&????(?????????????????7????????????-????????(?!???,??????W4??1?????????????J?$???4?&????E0?????E?4???????????*?????
ABSTRACT: The influence of different injector geometries on the mixing behavior of planar supersonic jets is investigated. Hydrogen is injected in the flow direction through the blunt end of a strut. Different lip thicknesses at the injector end induce different extents of recirculation zones. Additionally, changes are caused within the shock-wave/expansion fan pattern at the injector exit that have an important influence on loss in total pressure. The accuracy of the used numerical scheme is demonstrated for one injector geometry by comparison with experimental data. Based on this configuration, modifications in lip thickness and injection Mach number are investigated numerically and are assessed using several calculated performance parameters. Results show that the chosen lip thickness has a much stronger influence on loss in total pressure than moderate modifications in injector length and height. For the very thin hydrogen jets that were investigated, the mixing efficiency is nearly independent on injector lip thickness.Article · Jan 2000 ABSTRACT: In this paper, different aspects of supersonic turbulent flows are discussed, in connection with some properties of compressible turbulence. The discussion is based on experiments, in which particular features have been found. The first point is the influence of density gradients. It is shown that changing the density gradient in a boundary layer does not change the particularly small size of the energetic scales. This effect is attributed to compressibility and not to density stratification, probably by modifying the `inactive motions'. The second point is about the importance of acoustics in a mixing layer. The results show that turbulent transport of momentum and heat follows the same analogy as in boundary layers, and that the energy losses by acoustic radiation are too weak to explain the reduction of the spreading rate, which is the major global effect of compressibility.Article · Sep 2000 +1 more author ...ABSTRACT: Plane turbulent mixing between two streams of different gases (especially nitrogen and helium) was studied in a novel apparatus. Spark shadow pictures showed that, for all ratios of densities in the two streams, the mixing layer is dominated by large coherent structures. High-speed movies showed that these convect at nearly constant speed, and increase their size and spacing discontinuously by amalgamation with neighbouring ones. The pictures and measurements of density fluctuations suggest that turbulent mixing and entrainment is a process of entanglement on the scale of
some statistical properties of the latter are used to obtain an estimate of entrainment rates. Large changes of the density ratio across the mixing layer were found to have a relatively small effect on it is concluded that the strong effects, which are observed when one stream is supersonic, are due to compressibility effects, not density effects, as has been generally supposed.Article · Jul 1974 Conference Paper · Feb 2017 · Textile Research JournalChapter · Feb 2017 · Textile Research JournalWei LiArticle · Jan 2017 Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.This publication is from a journal that may support self archiving.
oror log in with}