NACA Airfoil 0012 CFD Trouble

Hi yall,

I’m setting up aerodynamics simulation in SimScale for a NACA 0012 airfoil and I’m stuck on a setup error.

Current setup:

  • Simulation type: Incompressible external flow
  • Geometry consists of:
    • Part 1 = NACA 0012 airfoil
    • Flow region = external flow volume created using the External Flow Volume tool
  • Air material is assigned only to the Flow region.
  • Velocity inlet is assigned to the front face of the flow region.
  • Pressure outlet is assigned to the back face of the flow region.
  • Force and moment coefficients are assigned to the airfoil faces.
  • Cell zone is assigned to the Flow region.

Problem:

When I try to start the simulation, I get the following error:

“Please ensure that all CAD entities are assigned a material or advanced concept. Missing material or advanced concepts were detected for the following entities: Part 1.”

I previously had a cell zone error, but assigning the Flow region to the cell zone fixed that.

What I’m unsure about:

Since this is an external CFD simulation, I thought Part 1 (the airfoil) should remain a solid obstacle and only the Flow region should receive the Air material.

Should Part 1 also be assigned a material, or is there another step I’m missing?

I’ve attached screenshots of the geometry, material assignment, and the error message.

Any help would be greatly appreciated. Thanks!

Hi,

For analysis types such as incompressible, you must delete the solid parts after creating the flow region: https://www.simscale.com/knowledge-base/flow-volume-extraction/#:~:text=In%20addition%2C%20delete%20the%20solid%20parts%20to%20be%20able%20to%20use%20the%20model%20in%20an%20analysis%20type%20that%20requires%20a%20single%20fluid%20region

Cheers