Buoyancy Driven Flow

sunilpatil · March 18, 2013, 13:39

Hello sir,
I am modelling natural convection heat transfer between two parallel plates
with Buoyancy using Ansys CFX. up to what value of residual can be acceptable
for Buoyancy Driven Flows(i.e. RMS values for Mass and Momentum,Heat Transfer,Turbulent KE)
Thank You sir

ghorrocks · March 19, 2013, 05:38

There is no general rule for this. You have to do a sensitivity study where you sweep a range of convergence tolerances and see what effect it has on parameters of interest to you. When you have converged the parameters of interst to you to a tolerance you are happy with then you have found the convergence tolerance you require.

March 18, 2013, 13:39	Buoyancy Driven Flow	#1
sunilpatil Senior Member sunil Join Date: Jul 2012 Location: Bangalore Posts: 179 Rep Power: 14	Hello sir, I am modelling natural convection heat transfer between two parallel plates with Buoyancy using Ansys CFX. up to what value of residual can be acceptable for Buoyancy Driven Flows(i.e. RMS values for Mass and Momentum,Heat Transfer,Turbulent KE) Thank You sir

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
2D Lid Driven Cavity Flow simulation using MATLAB	josephlm	Main CFD Forum	4	August 17, 2023 21:36
Flow meter Design	CD adapco Group Marketing	Siemens	3	June 21, 2011 09:33
is there any parallel code for the famous Lid Driven Cavity flow?	gholamghar	Main CFD Forum	0	August 1, 2010 02:55
steam flow in a pipe driven by a pressure gradient between inlet and outlet	SalvoCalvo	COMSOL	0	March 11, 2010 07:52
Inviscid Drag at subsonic, subcritical Mach #	Axel Rohde	Main CFD Forum	1	November 19, 2001 13:19

March 19, 2013, 05:38		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,854 Rep Power: 144	There is no general rule for this. You have to do a sensitivity study where you sweep a range of convergence tolerances and see what effect it has on parameters of interest to you. When you have converged the parameters of interst to you to a tolerance you are happy with then you have found the convergence tolerance you require.