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-   -   Can sb know the analytical solution for 2d unstead (https://www.cfd-online.com/Forums/main/8106-can-sb-know-analytical-solution-2d-unstead.html)

ppaitt September 19, 2004 01:50
Can sb know the analytical solution for 2d unstead
 
Can somebody know the analytical solution for 2d unsteady diffusion problem? Appreciate it !

sandra September 19, 2004 11:44
Re: Can sb know the analytical solution for 2d uns
 
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Tom September 20, 2004 04:04
Re: Can sb know the analytical solution for 2d uns
 
Whether an analytic solution can be written down, in a useful form, depends upon your initial conditions and boundary conditions? for an axisymmetric problem try using the similarity variable Z = r/sqrt(t) to reduce the problem to an ode in Z. For problems on a rectangular domain use separation of variables and Fourier series.


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