How is viscosity related to flow rate?

Viscosity is the nature of fluid. The speed of fluid flow is not important and its viscosity does not change. Here we are referring to Newtonian fluid.

The shear stress due to the viscosity of the fluid depends on the flow velocity. However, the viscosity itself did not change. In fact, the flow is not important, the speed at which the fluid is sheared. For example, dv / dy is important and direct v is not important.

For non-Newtonian fluids, viscosity is also affected by shear rate. Again, the important thing is not the flow velocity but the speed with which the fluid is sheared.

Resistance to material flow For example, water is less viscous than molasses, making it easier to flow. It will be appreciated that viscosity is related to the concept of shear forces and that different fluid layers exert shear forces on each other or on other surfaces as they move relative to each other. Viscosity is behind the frictional components of the skin. ♦ Kinematic viscosity is a measure of the rate at which momentum passes through a fluid. It is measured in Stokes. ♦ Dynamic viscosity is the ratio of the stress in the fluid region to the rate of change in the strain it undergoes. It is equal to kinematic viscosity multiplied by fluid density. It is measured in Pascal seconds or Poise

Viscosity is resistance to fluid flow. Two examples of fluid are water and helium. Some fluids have high viscosity and some fluids have low viscosity. Viscosity depends on the speed or speed at which the fluid flows. As the temperature of the liquid rises, the liquid particles move faster and the viscosity decreases. As the temperature of the liquid decreases, the particles decelerate, thereby increasing the viscosity. Basically, it flows more quickly when the liquid is hot, and flows more slowly when the liquid cools. Can you think of higher temperature liquid and lower temperature liquid? Natural gas is slightly different. As the gas temperature rises, the viscosity increases as the gas appears to increase as the velocity of the particles also increases. As the particles accelerate, they start to impact and cause an increase in friction. The higher the friction, the higher the viscosity

The fluid flowing through the stationary surface undergoes a force countering the flow. This tendency to resist flow is known as the viscosity of the fluid. Fluids such as air have low viscosity, thicker fluids like water are more viscous, fluids such as honey and oil are more viscous. Viscosity represents the internal flow resistance of a fluid and can be regarded as a measure of fluid friction. The higher the viscosity of the liquid, the slower the flow rate. Viscosity can be measured by calculating the time required for a given amount of liquid to flow through the capillary under gravity. The more viscous liquid, the more time it takes. The viscosity can also be determined by measuring the rate at which the steel ball falls into the liquid. As the viscosity increases, the sphere descends more slowly. Viscosity is related to the relative mobility of individual molecules of a liquid relative to each other.