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Actuator Disk/ Depressure Source

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Old   March 31, 2015, 04:58
Default Actuator Disk/ Depressure Source
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Francesco
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Hi,
i need to simulate the effect of a boundary layer ingestion. So i need to simulate the suction effect of the engine and the jet velocity, but i don't care about the engine performance.
I "simply" need to tell that there is a suction area in the intake and a blowing area in the exhaust.
I look at both fvOptions and cerateBaffle, but i did not understand how work.
I have to create the geometry of the disk wall in the stl or i can simply define it in the fvOption/crateBaffel dict?
Wich ones of the two method is better for my purpose?
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Old   March 31, 2015, 06:55
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Icaro A. Accordi
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Use fixedJumpAMI or fixedJump.
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Old   March 31, 2015, 08:23
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Francesco
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Can you tell me how use it?
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Old   March 31, 2015, 08:52
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Icaro A. Accordi
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Use it in the high pressure patch p dictionay:
highPressureSide
{
type fixedJumpAMI;// or fixedJump for conforrmal cyclic patches
patchType cyclic;
jump uniform 10;// (pressure/rho) jump for incompressible
}

And it for the another patch (low pressure) in p dictionary:
lowPressureSide
{
type cyclicAMI;// or just cyclic for conforrmal cyclic patches
}

All other variables (e.g.U, k, epsilon, omega, etc) are setting in both patches as :

highPressureSide
{
type cyclicAMI;// or just cyclic for conforrmal cyclic patches
}


lowPressureSide
{
type cyclicAMI;// or just cyclic for conforrmal cyclic patches
}
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Old   March 31, 2015, 10:07
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Francesco
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I'm more noob than you think...
I only know how to run a simpleFoam ofa wing or other static and simple body.
I took an stl file and put in SHM..
How can i introduce the "fan"
I have to create the fan surface in the stl file or it could be assigned with some dictionary?
I don't know if you understand me, my english level is low..
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