Question

What are the factors that affect fluid flow regimes?

• A. Mass flow rate, density, viscosity of fluid and geometry of the flow channel
• B. Mass flow rate and geometry of the flow channel
• C. Density and viscosity of the fluid
• D. Geometry of the flow channel only

Hint:

To determine the fluid flow regime, consider not just the geometry of the flow channel, but also the mass flow rate, density, and viscosity of the fluid.

Answer 1

The Correct Option is A

Fluid flow regimes are primarily influenced by a combination of various factors that define how a fluid moves through a channel or pipe. These factors include:
- Mass flow rate, which determines how much fluid is flowing through the system over a given period.
- Density and viscosity of the fluid, as these properties affect the resistance of the fluid to flow.
- Geometry of the flow channel, which impacts the flow characteristics such as turbulence, laminar flow, or transition between the two.
Thus, the correct answer is option (1): Mass flow rate, density, viscosity of fluid and geometry of the flow channel.
- Option (2) is incorrect because it omits the viscosity and density of the fluid, which are key factors in determining the flow regime.
- Option (3) overlooks the role of the mass flow rate and geometry, which are also essential.
- Option (4) is incomplete, as the geometry alone cannot explain all the flow regimes, as viscosity and mass flow rate are also important.
Therefore, the correct answer is option (1).