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In a three-dimensional structured grid, an element has ____________ faces and ____________ vertices.

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In a three-dimensional structured grid, an element has ____________ faces and ____________ vertices.

(a) 8, 6

(b) 8, 8

(c) 4, 4

(d) 6, 8

I have been asked this question by my school teacher while I was bunking the class.

My enquiry is from FVM topic in portion Finite Volume Methods of Computational Fluid Dynamics

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Right answer is (d) 6, 8

Easy explanation: The elements of a structured grid are in a hexagonal shape. They have six faces and eight vertices. Each interior element is surrounded by six neighbours. Unlike the unstructured grids, these are fixed in a structured grid.

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