CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM Programming & Development

Wall heat boundary condition: groovyBC

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   October 16, 2015, 06:21
Default Wall heat boundary condition: groovyBC
New Member
Join Date: Oct 2015
Posts: 2
Rep Power: 0
Simeone_Parolisi is on a distinguished road
I successfully modeled a radiative and convective heat transfer through a wall

\dot{q_w} = -\lambda \left(\dfrac{\partial T}{\partial n}\right)_w = \sigma\epsilon \left(T_w^4-T_e^4\right) + h\left(T_w-T_e \right)

with this implementation in file 'T' in directory '0'

type groovyBC;
refValue uniform 288;
refGradient uniform 0;
valueFraction uniform 1;
value uniform 288;
valueExpression "0";
gradientExpression "h*(T-Tinf)+(sigma)*E*(T*T*T*T-Tinf*Tinf*Tinf*Tinf)";
fractionExpression "0";
evaluateDuringConstruction 0;

After, I was forced to change the string thermoType>energy from 'sensibleEnthalpy' to 'sensibleInternalEnergy' in file 'thermophysicalProperties' in directory 'constant' for other reasons and I obtain a floating point exception error.
What is the problem? Is there an alternative method to implement heat transfer written above?
Simeone_Parolisi is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Difficulty In Setting Boundary Conditions Moinul Haque CFX 4 November 25, 2014 18:30
Temperature and heat flux wall boundary condition L. Hamid FLUENT 2 February 10, 2014 00:59
Natural convection in a closed domain STILL NEEDING help! Yr0gErG FLUENT 3 June 12, 2013 02:12
Domain Imbalance HMR CFX 3 March 6, 2011 21:10
Wall boundary condition (heat transfer) Arnold FLUENT 4 February 16, 2006 23:35

All times are GMT -4. The time now is 15:45.