Cavitating Flow

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  • Last Post 18 February 2019
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Max4 posted this 18 February 2019

Hello,

In order to simulate a cavitating flow in a compressible liquid, it is possible to choose "compressible" for the density:

In order to calculte the pressure as function of the density use ANSYS the Tait Equation of State for the liquid phase as follow.

 

But for the gas phase and the mixture phase, does ANSYS use these equations?

 

Regards,

Maxime

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abenhadj posted this 18 February 2019

The equations are those documented in the official documentation and based on user choice.

Best regards,

Amine

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Max4 posted this 18 February 2019

Hi,

In the Fluent User´s Guide, it deals with the Tait Equation for liquid phase, but not about the gas or mixture phase.

abenhadj posted this 18 February 2019

So then define whatever you think appropriate via UDF if not built-in. If the density varies over the pressure considerably then you need to use UDRGM.

Best regards,

Amine

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