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The solution of a flow problem is defined at discrete points in the domain is called as _________

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The solution of a flow problem is defined at discrete points in the domain is called as _________

(a) Elements

(b) Cells

(c) Grids

(d) Nodes

The question was asked in an interview for job.

I need to ask this question from CFD Solution Procedure topic in section Philosophy of Computational Fluid Dynamics of Computational Fluid Dynamics

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The correct choice is (d) Nodes

The explanation: Nodes are the intersection of cells in a domain. These are the points where the flow properties are defined after solving the problem. The flow is not analysed in continuous points of the domain.

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