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-   -   DSDP_H and DSDP_T properties (https://www.cfd-online.com/Forums/cfx/139086-dsdp_h-dsdp_t-properties.html)

Stephen Waite July 17, 2014 00:37

DSDP_H and DSDP_T properties
 
Hello, I'm simulating flow with a variable composition mixture with three components (air ideal gas, CO2 at STP and H2O) however when I go to run the simulation I get the following errors:

"The property DSDP_T is only present in some of the components of the mixture GasMixture"


"The property DSDP_H is only present in some of the components of the mixture GasMixture"

where GasMixture is the name of the variable composition mixture.

I'm unsure about how to change/set these DSDP_T and DSDP_H properties seeing all components of the gas mixture are defined in the CFX materials library.

Thanks in advance for your help.

ghorrocks July 17, 2014 06:02

I suspect (but am not sure) that it is looking for ideal gas properties for the CO2 and H2O components. As CO2 and H2O are constant density fluids I would generate a constant density air component at the appropriate condition so all your components are constant density.


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