Specifying the Reference Pressure

Modeling > Modeling Flow and Energy > Modeling the Equation of State > Defining the Reference Pressure > Specifying the Reference Pressure

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Specifying the Reference Pressure

For simulations using the Ideal Gas model the following guidelines are suggested for setting the reference pressure:

if the Mach numbers are low (say 0.3 or less), set the reference pressure to some ambient value such that the working pressures will be small.

if the Mach numbers are substantial, you can do one of the following:

Set the reference pressure to an ambient value such that the working pressures will be small.

Set the reference pressure to zero so that working pressures are identical to the absolute pressures.

To specify the reference pressure, open the Reference Values node in the continuum node, then select Reference Pressure. A constant value can be entered in the Properties window.

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