Enter the convective heat transfer coefficient, characteristic length, and thermal conductivity of the fluid to determine the nusselt number.

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## Nusselt Number Formula

The following equation can be used to calculate the Nusselt number of a given system.

N = h * L / k

- Where N is the nusselt number
- h is the convective heat transfer coefficient
- L is the characteristic length
- k is the thermal conductivity of a fluid

## Nusselt Number Definition

A Nusselt number is a measure of the rate of heat transfer between a moving fluid and a solid body.

## Nusselt Number Example

How to calculate Nusselt number?

**First, determine the convective heat transfer coefficient.**Calculate the convective heat transfer coefficient.

**Next, determine the length.**Measure the length of the contact between the fluid and solid.

**Next, determine the thermal conductivity.**Calculate the thermal conductivity of the fluid.

**Finally, calculate the Nusselt Number.**Calculate the Nusselt number using the formula above.

## FAQ

**What is the Nusselt Number?**

The Nusselt number is a dimensionless unit used to calculate heat transfers between a moving fluid and a solid body.

**How is the Nusselt number calculated?**

The Nusselt number is calculator by multiply the convective coefficient by the length, and then dividing by the conductivity of the moving fluid.

**What is the convective heat transfer coefficient?**

The convective heat transfer coefficient is the rate at which the container conducts heats with the outside atmosphere.