Enter the volume flow rate and the diameter of the natural gas pipe into the calculator to determine the natural gas velocity.

Natural Gas Velocity Formula

The following equation is used to calculate the Natural Gas Velocity.

NGV = Q / (pi*D^2/4)
  • Where NGV is the Natural Gas to Velocity (m/s)
  • Q is the volumetric flow rate (m^3/s)
  • D is the internal diameter of the natural gas pipe (m)

To calculate the natural gas velocity, divide the volumetric flow rate by the cross-sectional area of the natural gas pipe.

What is a Natural Gas Velocity?

Definition:

A natural gas velocity is a measure of the linear rate of speed of natural gas moving through a pipe.

How to Calculate Natural Gas Velocity?

Example Problem:

The following example outlines the steps and information needed to calculate the Natural Gas Velocity.

First, determine the volumetric flow rate. In this example, the flow is found to be 600 m^3/s.

Next, determine the internal diameter of the natural gas pipe. For this problem, the internal diameter of the natural gas pipe is found to be 1.2m.

Finally, calculate the Natural Gas Velocity using the formula above:

NGV = Q / (pi*D^2/4)

NGV = 600 / (3.14159*1.2^2/4)

NGV = 530.31 m/s

FAQ

What factors can affect the velocity of natural gas in a pipe?
Several factors can influence the velocity of natural gas in a pipe, including the pipe’s diameter, the roughness of the pipe’s internal surface, the pressure and temperature of the gas, and any bends or fittings in the pipeline that may cause resistance to flow.

Why is it important to calculate the velocity of natural gas in a pipeline?
Calculating the velocity of natural gas in a pipeline is crucial for several reasons. It helps in designing an efficient piping system, ensures the safe transport of gas by preventing erosion and vibration damage to the pipeline, and aids in determining the optimal operating conditions for the system.

Can the formula provided be used for gases other than natural gas?
Yes, the formula NGV = Q / (pi*D^2/4) is a general equation for calculating the velocity of any gas through a pipe, provided you have the volumetric flow rate and the internal diameter of the pipe. However, adjustments may be needed based on the specific gas’s properties, such as density and viscosity.