[xkang]

Hi guys,
i am running a conjugate heat transfer problem. i attached a picture to describe my problem.basiclly it is a supersonic(mach number at inlet is around 2) impinging jet problem and my target is to simulate the temperature distribution inside wall.

the interface between solid phase and fluid phase is treated as coupled wall.i start with standard K-e model and try different cell size at solid zone(in my case, the material is aluminium). But every time when i refine the solid zone, temperature inside solid zone get reduce. does anyone have a idea why it happen???

thx ahead!!!

[xkang]

i do have some experimental temperature data of solid zone. it is around 300C which is much higher than the simulation result of the case with refined solid zone(around room temperature)

[xkang]

i monitor the temperature changing inside solid zone and find out the temperature changing inside fine solid zone is much slower than the temperature changing inside coarse solid zone. So my problem may be simply caused by not enough iteration...

is it the source of my problem? if so ,how to make it converge faster??

[ssixr]

Originally Posted by xkang

i monitor the temperature changing inside solid zone and find out the temperature changing inside fine solid zone is much slower than the temperature changing inside coarse solid zone. So my problem may be simply caused by not enough iteration...

is it the source of my problem? if so ,how to make it converge faster??

hi,

i would suggest you to do grid independence study...As you have experiment data, it would be easy to validate..

Sudhir