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-   -   Finite Volume Vs Finite Difference (http://www.cfd-online.com/Forums/main/5716-finite-volume-vs-finite-difference.html)

Mukkarum February 8, 2003 01:14

Finite Volume Vs Finite Difference
 
Why in finite difference we characterize pdes as elliptical, parabolic or hyperbolic but not in Finite Volume. Thanks

Praveen February 8, 2003 04:13

Re: Finite Volume Vs Finite Difference
 
You can use both FD and FVM for solving any type of equations. The classification of pde's has nothing to do with FD and FVM.

Mukkarum February 8, 2003 06:12

Re: Finite Volume Vs Finite Difference
 
I think classification of pdes play role in finite difference b/c a big details of classification of pdes are available in all finite difference CFD books but not in Finite volume CFD books. I want to know if the classification of pdes play role in Finite Difference so why not in finite volume. Thanks

Pete February 8, 2003 12:16

Re: Finite Volume Vs Finite Difference
 
The fundamental difference is that with finite difference methods, you solve the differential form of the equations (via Taylor series representation of the derivatives), and in finite volume methods you solve the integral form of the equations (via control volume approach).

As Praveen said, the classification of PDE's is independent of this. Classification of PDE's simply provides insight into the behavior and characteristics of the system.



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