Error in Conjugate HT Problem

Naimish · September 18, 2023, 02:14

Hello,
I'm doing a simulation on air is flowing inside a hollow duct with minimal thickness. The upper and bottom wall of the duct has some turbulators mounted with the wall it self and constant heat flux is applied on 4 wall of duct.
I'm getting this error
Reversed flow on 12 faces (0.0% area) of pressure-outlet 69.
64 5.5787e-03 1.1695e-05 2.5169e-06 2.8083e-06 3.7085e-05 2.3229e-03 5.4864e-05 18:36:51 5436

My turbulent model is Komega SST and how I can solve this?
Boundry condition at Inlet and outlet is mass flow and pressure.

CFDKareem · September 18, 2023, 21:33

Recirculating flow at the outlet isn't always a problem as long as its far away from your region of interest. To eliminate the error you can pull the outlet further away from your ROI. You can also increase the mesh size as the flow moves away from your ROI, within limit, to make sure the flow is moving in the streamwise direction.

September 18, 2023, 02:14	Error in Conjugate HT Problem	#1
Naimish New Member Naimish Pandya Join Date: Jun 2023 Posts: 1 Rep Power: 0	Hello, I'm doing a simulation on air is flowing inside a hollow duct with minimal thickness. The upper and bottom wall of the duct has some turbulators mounted with the wall it self and constant heat flux is applied on 4 wall of duct. I'm getting this error Reversed flow on 12 faces (0.0% area) of pressure-outlet 69. 64 5.5787e-03 1.1695e-05 2.5169e-06 2.8083e-06 3.7085e-05 2.3229e-03 5.4864e-05 18:36:51 5436 My turbulent model is Komega SST and how I can solve this? Boundry condition at Inlet and outlet is mass flow and pressure.

September 18, 2023, 21:33		#2
CFDKareem Senior Member Kareem Join Date: Nov 2022 Location: New York Posts: 125 Rep Power: 4	Recirculating flow at the outlet isn't always a problem as long as its far away from your region of interest. To eliminate the error you can pull the outlet further away from your ROI. You can also increase the mesh size as the flow moves away from your ROI, within limit, to make sure the flow is moving in the streamwise direction. __________________ Please like the answer if it helped! Video Tutorials and Tips: https://www.youtube.com/@cfdkareem/featured

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Y plus display in CFD-Post in a conjugate problem	harryosu	ANSYS	2	June 26, 2019 18:31
Issues with creating "regions" for conjugate heat transfer problem!!	vabishek	OpenFOAM Pre-Processing	6	April 23, 2015 17:23
Problem with conjugate heat transfer in Fluent	JianT88	FLUENT	0	March 16, 2015 09:17
Shell conduction and Conjugate problem	RBM	FLUENT	1	October 24, 2005 13:20
conjugate heat transfer problem	Andreas	CFX	1	February 5, 2002 19:22