Radiation and convection in thermal models with different ambient and sink temperatures
24 Ansichten (letzte 30 Tage)
I have to implement a simple 2D steady heat conduction problem for a rectangular domain with different boundary conditions: fixed temperature on one side, perfectly insulated on another side, convection AND radiation on the other two sides.
I have already found the solution here
but it seems that it works only if BOTH ambient and sink temperatures are the same (the ambient or undisturbed temperature is applied to convection and sink temperature to radiation).
In my case these two temperatures are different. Is it possible to solve it ?
Thanks in advance!
Ravi Kumar am 30 Mär. 2020
To pass additional parameter, wrap the functions that actually computes with the ones you specify as inputs. In your example:
h = 50; % Convective heat transfer coefficient [W/m^2 K]
sigma = 5.670367E-8; % Stefann-Boltzmann constant [W/(m^2 K^4)]
Tinf = 25; % External fluid temperature [°C]
Ts = 15; % External sink temperature [°C]
emiss = 0.7; % Surface emissivity [-]
mygfunInterface = @(location,state) mygfun(location,state,h,sigma,Tinf,Ts,emiss)
Similaraly for q functionction and use
And, updated the actual function to take additinal inputs:
function bcMatrix = mygfun(location,state,h,sigma,Tinf,Ts,emiss)