[massive_turbulence]

Originally Posted by Vishsel

Hi all,

In my case, i have to use a boundary type that needs the input as heat Flux, which is recalculated to get the output as temperature. my solver is chtMultiRegionSimpleFoam.

0/T file :

wall-mp-1
    {
        type            externalWallHeatFluxTemperature;
        heatSource      flux;
        q               uniform 6000 ;
        alphaEff        alphaEff;
        value            uniform 323.15; ? //why i need to give temp. value ? because i already gave 'q' value know?
        kappa           solidThermo;
        kappaName       none; 
    }

Solving for fluid region fluid
DILUPBiCG:  Solving for Ux, Initial residual = 0.00242038, Final residual = 2.85334e-005, No Iterations 1
DILUPBiCG:  Solving for Uy, Initial residual = 0.00466735, Final residual = 7.31426e-005, No Iterations 1
DILUPBiCG:  Solving for Uz, Initial residual = 0.00371143, Final residual = 0.00020355, No Iterations 1
DILUPBiCG:  Solving for h, Initial residual = 0.00293122, Final residual = 0.000270902, No Iterations 1
Min/max T:323.3 323.3
GAMG:  Solving for p_rgh, Initial residual = 0.0017874, Final residual = 1.12521e-005, No Iterations 3
time step continuity errors : sum local = 0.0587456, global = 0.00203603, cumulative = 10.1817
Min/max rho:***
DILUPBiCG:  Solving for epsilon, Initial residual = 0.00358344, Final residual = 4.05951e-005, No Iterations 2
DILUPBiCG:  Solving for k, Initial residual = 0.00331097, Final residual = 3.24722e-005, No Iterations 2

Solving for solid region solid
DICPCG:  Solving for h, Initial residual = 0.00218476, Final residual = 9.17909e-006, No Iterations 4
Min/max T:min(T) [0 0 0 1 0 0 0] 323.129 max(T) [0 0 0 1 0 0 0] 349.782
ExecutionTime = 788.942 s  ClockTime = 789 s

Why there is a need of two inputs as temp. value and heat flux value in 0/T ? Because i need to set an input as heat flux value only..

Is this boundary type is correct for assigning of heat flux as an input ? if it is not, Which one is suitable for my case?

My guess would be that q is the heat flux but you still need the temperature as a reference to the outside. Q is nothing but the amount of watts/meter^2 but the temperature outside still needs to defined in order to determine how much gets transferred on the wall at a given rate???