How the presence of one fluid effects on the flow of another

1. What affects the flow of fluids?
2. What causes the fluid to flow?
3. What are two ways in which a fluid can flow?
4. How does fluid density affect flow rate?

What affects the flow of fluids?

Fluid flow in pipes is affected by many different factors: The viscosity, density, and velocity of the fluid. Changes in the fluid temperature will change the viscosity & density of the fluid. The length, inner diameter, and in the case of turbulent flow, the internal roughness of the pipe.

What causes the fluid to flow?

Fluids flow when there is a pressure difference between two points in order to equalize that pressure. Fluids flow in response to a net force. Pressure is simply force/area, and the differential pressure is simply a pressure gradient in a pipe and the fluid flows from high pressure to low pressure.

What are two ways in which a fluid can flow?

Fluid can be viscous (pours slowly) or non-viscous (pours easily). Fluid flow can be rotational or irrotational. Irrotational means it travels in straight lines; rotational means it swirls. For most of the rest of the chapter, we'll focus on irrotational, incompressible, steady streamline non-viscous flow.

How does fluid density affect flow rate?

Fluids with more mass per unit volume are heavier and require more energy to move them and shear less easily.