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Atleast 5 general Diffrences between FVM, FEM, FDM

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Old   September 22, 2005, 01:33
Default Atleast 5 general Diffrences between FVM, FEM, FDM
  #1
RAJ
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please brief out

1) the general differences between the FVM, FDM, FEM methods.

2) what are the diffrent schemes for dissipative and dispersive.

Sincere Thanks and Regards

RAJ
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Old   September 28, 2005, 22:20
Default Re: Atleast 5 general Diffrences between FVM, FEM,
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top.shen
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the second question, i image the answer is: dissipative mean consumptive,that is to say, the value of property will be less and less with time, so it will be likely to convergce . dispersive mean nondirectional, the value of property will disperse in all directions,such as both forward and backward in a flow. there are two diffent focus.
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Old   October 7, 2005, 08:25
Default Re: Atleast 5 general Diffrences between FVM, FEM,
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PIRAMANANDHAN
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FDM-differentiation,easy to perform ,no need to select polynomial function,errorous when moving to nonlinear eqn.

FEM-formulation is difficult,converged,errors will minimize if we go to higer order formulations.

FVM:just like FEM but possible only for simple CV
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