|
[Sponsors] |
March 14, 2021, 13:38 |
CHT using Fluent for jet vane.
|
#1 |
Member
Join Date: Mar 2020
Posts: 33
Rep Power: 6 |
Hello,
I am trying to simulate the heat transfer between the jet vane and the flow at the exit of nozzle. I have setup pressure inlet and outlet and have both solid (jet vane made of steel) and fluid (air) domains. I simulated the steady state solution using explicit 1st order upwind scheme and found a good match between CFD and experimental thrust data. Other values are also matching except temperature of the jet vane. Now the problem is that when I initialize the solution from inlet @3275 K, the whole domain is set to 3275 K which eventually converges to accurate value but the temperature of the vane keeps increasing and stays between 3300-3700K which is really absurd as the flow at the nozzle exit is around 1100K. I tried to re simulate using standard initialization again at nozzle inlet but with temperature of 300K (instead of 3275 K), but this results in divergence. I tried to lower courant number and relaxation factors but couldn't succeed. The thermal boundary condition at vane walls is coupled. I need your help for this! Can I set up the initial jet vane temperature at 300K? Thank you! |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Two questions on Fluent UDF | Steven | Fluent UDF and Scheme Programming | 7 | March 23, 2018 03:22 |
heat transfer with RANS wall function, over a flat plate (validation with fluent) | bruce | OpenFOAM Running, Solving & CFD | 6 | January 20, 2017 06:22 |
Running UDF with Supercomputer | roi247 | FLUENT | 4 | October 15, 2015 13:41 |
Fluent 12.0 is worst then Fluent 6.2 | herntan | FLUENT | 5 | December 14, 2009 02:57 |
Problems in lauching FLUENT | Lourival | FLUENT | 3 | January 16, 2008 16:48 |