1D advection-diffusion--need to benchmark my code; any suggestions?

bzz77 · March 21, 2010, 05:40

Hi everyone:

I am teaching myself transport/programming, and have created a simple program for 1-D advection-diffusion (constant velocity, diffusion coefficient, central differencing, Crank-Nicolson).

I would like to check that my code is working properly and would appreciate any advice about how to go about this. I have not been successful on Google at finding code that others have written... If anyone can direct me or provide advice about getting an analytical solution, I would be very grateful. An EXCEL-based spreadsheet or a Matlab or a c++ implementation would be useful.

CfdLunak · March 23, 2010, 08:19

Hello,

as a first step you can set diffusion coefficient zero-your initial condition should move the prescribed velocity unchanged.

Lunak

March 21, 2010, 05:40	1D advection-diffusion--need to benchmark my code; any suggestions?	#1
bzz77 New Member Join Date: Jan 2010 Posts: 28 Rep Power: 16	Hi everyone: I am teaching myself transport/programming, and have created a simple program for 1-D advection-diffusion (constant velocity, diffusion coefficient, central differencing, Crank-Nicolson). I would like to check that my code is working properly and would appreciate any advice about how to go about this. I have not been successful on Google at finding code that others have written... If anyone can direct me or provide advice about getting an analytical solution, I would be very grateful. An EXCEL-based spreadsheet or a Matlab or a c++ implementation would be useful.

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March 23, 2010, 08:19		#2
CfdLunak New Member Join Date: Mar 2009 Posts: 5 Rep Power: 17	Hello, as a first step you can set diffusion coefficient zero-your initial condition should move the prescribed velocity unchanged. Lunak