Enter the diameter of the orifice and the diameter of the pipe into the calculator to determine the orifice beta ratio.

Orifice Beta Ratio Calculator

Enter any 2 values to calculate the missing variable

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Orifice Beta Ratio Formula

The following formula is used to calculate the orifice beta ratio for a given diameter of the orifice and diameter of the pipe.

β = d_o / d_p

Variables:

  • β is the orifice beta ratio
  • d_o is the diameter of the orifice
  • d_p is the diameter of the pipe

To calculate the orifice beta ratio, divide the diameter of the orifice by the diameter of the pipe.

What is an Orifice Beta Ratio?

The orifice beta ratio is a dimensionless number that represents the ratio of the diameter of an orifice to the diameter of the pipe in which the orifice is installed. This ratio is crucial in fluid dynamics and flow measurement, as it affects the flow rate and pressure drop across the orifice. A higher beta ratio indicates a larger orifice relative to the pipe diameter, which typically results in a lower pressure drop and higher flow rate. Conversely, a lower beta ratio indicates a smaller orifice, leading to a higher pressure drop and lower flow rate. Understanding and calculating the orifice beta ratio is essential for designing efficient fluid systems and ensuring accurate flow measurements.

How to Calculate Orifice Beta Ratio?

The following steps outline how to calculate the Orifice Beta Ratio.

  1. First, measure the diameter of the orifice (d_o).
  2. Next, measure the diameter of the pipe (d_p).
  3. Finally, calculate the Orifice Beta Ratio using the formula β = d_o / d_p.
  4. After inserting the values and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Diameter of Orifice (d_o) = 0.5 m

Diameter of Pipe (d_p) = 1 m