7/22/2019 Difference Between FEM,FDM and FVM

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In Finite Differnece, the Dependant variable values are stored at the nodes only.

In FEM, The dependant values are stored at the element nodes.

But in FVM, the dependant values are stored in the center of the Finite volume.

In FV approach, Conservation of mass, momentum, energy is ensured at each cell/finite volume level. This NOT true in FD and FE approach.

It is always better to use Governing Equation in Conservative form with FV approach to solve any problem which ensures conservation of all the properties in each cells/control volume.