For incompressible flows with no body forces, the volume integral term is ____________(a) viscous terms(b) pressure forces(c) body forces(d) flux termsThis question was posed to me in an interview for internship.My question comes from Incompressible Flows topic in division Incompressible Flows & Compressible Flows of Computational Fluid Dynamics

For incompressible flows with no body forces, the volume integral term

1.	For incompressible flows with no body forces, the volume integral term is ____________(a) viscous terms(b) pressure forces(c) body forces(d) flux termsThis question was posed to me in an interview for internship.My question comes from Incompressible Flows topic in division Incompressible Flows & Compressible Flows of Computational Fluid Dynamics
Answer» Correct answer is (a) VISCOUS terms The explanation is: Pressure forces and BODY forces are not PRESENT as the flow is incompressible and has no body forces. The flux terms are usually treated with the Gauss-Divergence theorem and converted into SURFACE integrals. Therefore, the viscous terms remain as volume integrals here.

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