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Exhaust Fan Boundary Condition in External Simulation

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Old   August 19, 2022, 04:26
Lightbulb Exhaust Fan Boundary Condition in External Simulation
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Hello,



I have a theoreticel question bevore simulating. I am trying to simulate a single propeller from a plane as a testingcase of a bigger simulation in ANSYS Fluent.



In the simulation I dont want to simulate each blade and also no rotation of the blades. Instead I want to use the exhaust-fan boundary condition because in the options of this model I can enter velocity, momentum, pressure-jump and other things of the outcomming air.



But I am still not sure if this is a valid model für planes because in every tutorial they're simulation an internal simulation in a pipe or something similar but never a external simulation like I will have by simulation a propeller of a plane. I am even not sure how the mesh bodies should look like in my case because I think its not possible to place a finite surface like in the tutorial in an external simulation.



Tutorial: https://www.youtube.com/watch?v=UXaeyCGE3nk



Does anyone know if this is the right model?
Is maybe an Intake-Fan boundary condition is better?
Or should I rather something like an Actuator Disk. (Adding some source-terms with the Cell-Zone-Condition)



I am cind of cunfused....


Thank you for your answers
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