[ulugbey]

Dear all,
I am using OF 2.1 in ddtFoam solver. I want to calculate Machnumber. I know there is a 'Mach' function available in OF 2.1. And in thermophysicalProperties folder thermotype is ePsiMixtureThermo<reactingMixture<gasThermoPhysics >>
So when I write Mach in the command window, the solver complains as follows;

--> FOAM FATAL ERROR: 
Unknown basicPsiThermo type ePsiMixtureThermo<reactingMixture<gasThermoPhysics>>

Valid basicPsiThermo types are:

11
(
ePsiThermo<pureMixture<constTransport<specieThermo<eConstThermo<perfectGas>>>>>
ePsiThermo<pureMixture<constTransport<specieThermo<hConstThermo<perfectGas>>>>>
ePsiThermo<pureMixture<sutherlandTransport<specieThermo<eConstThermo<perfectGas>>>>>
ePsiThermo<pureMixture<sutherlandTransport<specieThermo<hConstThermo<perfectGas>>>>>
ePsiThermo<pureMixture<sutherlandTransport<specieThermo<janafThermo<perfectGas>>>>>
hPsiThermo<pureMixture<constTransport<specieThermo<hConstThermo<perfectGas>>>>>
hPsiThermo<pureMixture<sutherlandTransport<specieThermo<hConstThermo<perfectGas>>>>>
hPsiThermo<pureMixture<sutherlandTransport<specieThermo<janafThermo<perfectGas>>>>>
hsPsiThermo<pureMixture<constTransport<specieThermo<hConstThermo<perfectGas>>>>>
hsPsiThermo<pureMixture<sutherlandTransport<specieThermo<hConstThermo<perfectGas>>>>>
hsPsiThermo<pureMixture<sutherlandTransport<specieThermo<janafThermo<perfectGas>>>>>
)



    From function basicPsiThermo::New(const fvMesh&)
    in file psiThermo/basicPsiThermo/basicPsiThermoNew.C at line 60.

FOAM exiting

Do you know how can I calculate Machnumber?
Best regards

[LuckyTran]

You need to set your thermo type. The one you set is not valid. A list of all 11 valid ones is printed for you. So pick one from the list. If the one you want is not there, then you might be in trouble. If you enter anything that is not on this list of 11, the solver will indeed complain like it is doing.

Just to be clear: ePsiMixtureThermo<reactingMixture<gasThermoPhysics >> is not one of the valid entries.


How to calculate Mach number is still yet another hurdle.

[ulugbey]

Hi,

Thanks for the reply. When I choose any of the valid basicpsiThermo which is listed, It gives an error saying that;

keyword mixture is undefined in thermophysicalProperties

I think as the solver uses epsiMixtureThermo, I should use this library and calculate Machnumber. Do you know how can I adapt Mach function so that it can be calculated also in "epsiMixtureThermo". Or Is there a way that I can write my own Machnumber function, which reads cp and cv values and calculate the Machnumber according to Temperature?

Thanks in advance

[LuckyTran]

Well of course you need to define a mixture also... You need to define a lot of things. I sense an entire cascade of such definitions that need to be defined coming. Get your thermophysical properties set before trying to go anywhere.

You don't need to adapt anything. What you need to do, is set up a proper openfoam case.

[ulugbey]

Hi,

I defined the correct thermotype Library"ePsiMixtureThermo" in Mach application. But when I compile the application it complains as in the attached file. Do you know why it complains like that?