Which of these statements is correct when using the staggered grids?(a) Interpolation is enough to find the pressure gradient in the continuity equation(b) No interpolation is needed to find the pressure gradient in the continuity equation(c) No interpolation is needed to find the pressure gradient in the momentum equation(d) Interpolation is enough to find the pressure gradient in the momentum equationI got this question in class test.My question comes from Incompressible Flows topic in section Incompressible Flows & Compressible Flows of Computational Fluid Dynamics

Which of these statements is correct when using the staggered grids?(a

1.	Which of these statements is correct when using the staggered grids?(a) Interpolation is enough to find the pressure gradient in the continuity equation(b) No interpolation is needed to find the pressure gradient in the continuity equation(c) No interpolation is needed to find the pressure gradient in the momentum equation(d) Interpolation is enough to find the pressure gradient in the momentum equationI got this question in class test.My question comes from Incompressible Flows topic in section Incompressible Flows & Compressible Flows of Computational Fluid Dynamics
Answer» CORRECT answer is (c) No interpolation is NEEDED to find the pressure gradient in the momentum EQUATION To explain: The momentum equation has this pressure gradient term given by \(\frac{\PARTIAL p}{\partial x}, \frac{\partial p}{\partial y}\, and \frac{\partial p}{\partial z}\). To find this pressure gradient, there is no need for any interpolation. The pressure gradients can be EASILY found out.

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