What is kinematic viscosity water?

Here's information about the kinematic viscosity of water, presented in Markdown format with the requested links:

Kinematic Viscosity of Water

Kinematic viscosity is a measure of a fluid's internal resistance to flow under gravitational forces. It's essentially the ratio of dynamic viscosity to density. The standard unit for kinematic viscosity is square meters per second (m²/s), but it's often expressed in centistokes (cSt), where 1 cSt = 1 mm²/s.

The kinematic viscosity of water is strongly dependent on temperature. As temperature increases, the kinematic viscosity of water decreases. This is because the water molecules have more kinetic energy, allowing them to overcome intermolecular forces more easily, thus reducing resistance to flow.

• Typical Values: At room temperature (around 20°C), the kinematic viscosity of water is approximately 1 cSt (or 1 mm²/s).

• Temperature Dependence: The following table shows the approximate kinematic viscosity of water at different temperatures:

  Temperature (°C)	Kinematic Viscosity (cSt)
  0	1.79
  20	1.00
  40	0.658
  60	0.475
  80	0.365
  100	0.294

• Pressure Dependence: While temperature is the dominant factor, pressure also has a minor influence on the kinematic viscosity of water. Increasing pressure generally leads to a slight increase in viscosity, but this effect is usually negligible compared to the effect of temperature, especially at moderate pressures.

• Importance: The kinematic viscosity of water is an important property in various fields, including hydraulics, fluid mechanics, and environmental engineering. It influences the flow behavior of water in pipes, channels, and other systems. Knowing the kinematic viscosity is crucial for calculating parameters like Reynolds number and for designing efficient hydraulic systems.