Which of the fluid forces are not considered in the Reynold's equation of flow ?
Correct answer: D. Compressibility forces
- A. Viscous forces
- B. Turbulent forces
- C. Pressure forces
- D. Compressibility forces
Explanation
The usual Reynolds force comparison accounts for inertial, pressure, and viscous effects; compressibility forces are not included in the basic incompressible Reynolds-number formulation. Turbulence is a flow regime or additional modelling effect, not the intended omitted force here.
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