# thermal conductivity in conduction problem

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 August 23, 2007, 09:40 thermal conductivity in conduction problem #1 sangeeta Guest   Posts: n/a I am writing a code in C++ to find out the temperature profile in a 2d conduction problem. suppose if i want to vary thermal conductivity which is the function of Coordinates, like k = x + y. So where this function wll be added in the discritizes equation. if k varies with temperature then i thnk ,it should as ap = an+aw+ae+as+(k); ap = an+aw+ae+as+(aT+b). is this right. please let me know

 August 23, 2007, 09:44 FVM #2 sangeeta Guest   Posts: n/a i am solving this problem using Finite volume method, Guass Seidal method.

 August 24, 2007, 13:56 Re: thermal conductivity in conduction problem #3 agg Guest   Posts: n/a In your PDE, the second order term should be d/dx(K*dT/dx)

 August 27, 2007, 00:37 Re: thermal conductivity in conduction problem #4 Sangeeta Guest   Posts: n/a ya i know that but if my k varies with temperature then can u tll me the algorithm to write the code.

 August 29, 2007, 04:23 Re: thermal conductivity in conduction problem #5 p Guest   Posts: n/a take care of the flux continuity at the interface (harmonic mean). see patankar for details - very well described.

 August 30, 2007, 00:51 Re: thermal conductivity in conduction problem #6 Sangeeta Guest   Posts: n/a ok thanks