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Simulation of Buoyant Effect of an Airship in Fluent

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Old   July 22, 2016, 11:19
Default Simulation of Buoyant Effect of an Airship in Fluent
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Hello to everyboy,

I am new in the CFD World, but in the last months I learned alot about this area. My case study is an Airship design in Blender and my goal is determine the Coefficient of Lift, Drag, Pitching Moment, Rolling Moment, Yawing Moment and Side Force.

To do this, I am using the HELYX-OS for the mesh and convert the mesh to Fluent format.

The turbulence model are Spalart-Allmaras for start and the Airship is in cruise condition.

The problem start in materials...in Fluent v15 I added the fluid, air around the airship but I don't know how to tell the fluent were is the helium...the envelope is in a STL file separate from the other files but I don't know how to tell the Fluent that in this particulary area are full with helium...

Anyone knows how to do that?

Thank you
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