Fluids

Fluids

UDF Fluid Properties

    • TA Duc Huy
      Subscriber

      How to code UDF PROPERTIES FLUENT for:
      The properties of the coolant hydrogen are significantly sensitive to temperature changes. The characteristics of hydrogen were assessed using an online database supplied by the National Institute of Standards and Technology (NIST) for a pressure of 3 MPa and a temperature range of 287 Ke1000 K. The critical pressure and temperature of hydrogen are known to be 1.29 MPa and 33 K, respectively. User-Defined Functions represent the physical properties related to the temperature at the same critical pressure to represent the coolant hydrogen's physical properties.
      Thanks for your support!

    • SRP
      Subscriber

      Hi,

      You can use DEFINE_PROPERTY. For more details you can refer to Ansys Customization manual: 2.3. Model-Specific DEFINE Macros (ansys.com)

      If you are not able to access the link, please refer to this forum discussion: https://forum.ansys.com/forums/topic/using-help-with-links/#latest

      Thank you

       

    • Rob
      Ansys Employee

      Just remember, you can't have properties dependent on pressure without using Ideal Gas or some of the Real Gas models. 

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