Steam property implementation in SU2
 

Hi all,

I'm fairly new to SU2 so would appreciate it if someone can advise where I may find how steam properties (or any real gas, in general) are implemented in the code.

Thanks!

Hi,
are you interested in the implementation or in the use of SU2 with more complex Equation of State?

At the moment in SU2 are available (beside the Ideal Gas Law) a Polytropic Van der Waals model and a Polytropic Peng-Robinson model.
The source code of this library is available under SU2_CFD/src/fluid_model_*.cpp. We are currently working to have SU2 linked with an external fluid library to use more complex EoS and using an efficient Look-Up Table approach. However the interface is completely general and any other built-in model or external library can be easily coupled with the solver.

If you want just to run a simulation for steam you should use the VW models or PR model. Hereafter an example.

case 1 using Van der Waals

FLUID_MODEL= VW_GAS


% Specific gas constant (J/kg*K)
GAS_CONSTANT= 461.53

% Ratio of specific heats
GAMMA_VALUE= - (Put an average value for you simulation: i.e. an average value of your inlet and outlet conditions)

% Critical Temperature ( Kelvin)
CRITICAL_TEMPERATURE= 647.1

% Critical Pressure (N/m^2)
CRITICAL_PRESSURE= 22064000


case 2 using Peng-Robinson

the same as case 1 but with one more option for the acentric factor:

% Acentri factor (0.035 (air))
ACENTRIC_FACTOR= 0.3443

The constants used in the examples are already for water and are taken from the fluids database of RefProp.


cheers

salvo

Properties of liquid water in SU2
 

Dear All


We are trying to simulate the water hammer problem where compression waves travel in water and say, in a steel pipe, when a valve is suddenly closed.


My question is: How can we select / implement equation of state for liquid water for the compressible formulation in SU2?


Thanks for the help.


Regards