The incompressible flow, incompressible fluid, and whether the flow of a compressible fluid must be a compressible flow?
Explanation of Solution
Incompressible fluid:
The fluid whose density is independent of pressure is known as incompressible fluid. The liquids (water) are the example of incompressible fluids.
Incompressible fluid flow:
A fluid flow is said to be an incompressible fluid flow, when no density changes observed (constant density) in every portion of fluid throughout the flow is known as incompressible fluid. The volume of fluid does not change in every portion of the fluid throughout the flow.
Compressible fluid:
The fluid whose density is dependent of pressure is known as compressible fluid. The gases (air) are the example of compressible fluids. The density of the compressible fluid can be maintained as constant throughout the flow. Thus, the flow of a compressible fluid not necessarily be compressible flow.
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Chapter 19 Solutions
Fundamentals of Thermal-Fluid Sciences
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