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-   -   reversed flow (http://www.cfd-online.com/Forums/fluent/46621-reversed-flow.html)

Mustafa Kemal İŞMAN November 19, 2007 09:44

reversed flow
 
hi, i am studing about impinging air jet. i have a 2D model. but, fluent gives me "reversed flow" warning for all iteration. i have tried so many mesh structures, I extended my geometry but I couldnt solve this problem. What would you suggest to eliminate this problem?


Neil November 19, 2007 09:53

Re: reversed flow
 
Try initialising using a small velocity then steadily increase it to the desired value through out the solution.

Usman November 20, 2007 06:39

Re: reversed flow *NM*
 

Mustafa Kemal İŞMAN November 20, 2007 09:36

Re: reversed flow
 
i have tried initialising using small velocity. reversed flow error disappeared. but after about 500 iteration it appeared again and reserved flow faces increased steadily.

emre turker November 27, 2007 01:15

Re: reversed flow
 
Merhaba MUstafa sanırım benim 2 sene nce yaptığım tez ile aynı konu stnde alışıyorsun bende Mİnogowa nın impinging jet testini fluentte uygulamaya alışmıştım matlabdede ıkan sonucları karşılaştırmıştım şuan işteyim ama msait olursam bu konuda sana yardımcı olmaya alışırım.

Mustafa Kemal İŞMAN November 27, 2007 04:52

Re: reversed flow
 
ok , sevinirim. nk denemediğim bir durum kalmadı diye dşnyorum. kitlenmiş durumdayım. yardımlarınızı bekliyorum...

pulgarcito December 3, 2007 07:30

Re: reversed flow
 
Hi Mustafa and emre,

Could be interesting for somebody in the CFD community to understand your responses.

Sorry but I can not understand you if you do not post messages in english.

Thank you in advance.


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