Ideal fluid is:
Correct answer: D. All of these
- A. Incompressible
- B. Steady flow
- C. Non - viscous
- D. All of these
Explanation
An ideal fluid is a fluid that is incompressible, steady flow, and non-viscous. Incompressible means that the fluid's density does not change with pressure or temperature. Steady flow means that the fluid's velocity does not change with time at a given point in the fluid. Non-viscous means that the fluid has no resistance to shear stress. In reality, no fluids are truly ideal. However, many fluids can be approximated as ideal fluids under certain conditions. For example, air can be approximated as an ideal fluid at low pressures and high speeds. The properties of an ideal fluid make it very easy to analyze and model. This is why ideal fluids are often used in fluid dynamics problems.
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About Fluid Dynamics
Fluid flow is described through speed, pressure and density, including steady flow and the equation of continuity for conserving mass. Bernoulli's equation relates pressure, speed and height, while fluid drag and terminal velocity explain why a falling object eventually moves at constant speed when drag balances its weight.
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