A problem about blockMeshDict

applekiller · July 21, 2023, 08:40

Hello, Foamers!

I have a problem about the function "project" in blockMeshDict file.
This blockMeshDict file is in a case about NACA0012(you can find it easily).

The code is

Code:

project ($aerofoil.xLower -0.1 $domain.zMin) (cylinder)  // 0       (0.3 -0.1 -2)

    project ($aerofoil.xLead  -0.1 $aerofoil.zLead) (aerofoil) // 4		(0  -0.1 0)
    project ($aerofoil.xTrail -0.1 $aerofoil.zTrail) (aerofoil)// 5		(1  -0.1 0)

My problem is following:

Is the function 'project' a mapping?

What the relationship between the points "($aerofoil.xLower -0.1 $domain.zMin)" and cylinder(cylinder is a geometry)?

How does the 'project' function work?

I welcome any answer, and I believe the more discussed the question, the clearer it becomes.

Lorenzo210 · October 27, 2023, 09:47

Hi,

I think "project" is projecting or mapping the vertex onto the surface indicated (cylinder or aerofoil), which has been loaded before.

It should be referring to the source file you can find in the following link:
https://www.openfoam.com/documentati...8H_source.html

Other useful files are located in:
FOAM_SRC/mesh/blockMesh

Regards,
Lorenzo

July 21, 2023, 08:40	A problem about blockMeshDict	#1
applekiller New Member Join Date: Jul 2022 Posts: 18 Rep Power: 3	Hello, Foamers! I have a problem about the function "project" in blockMeshDict file. This blockMeshDict file is in a case about NACA0012(you can find it easily). The code is Code: project ($aerofoil.xLower -0.1 $domain.zMin) (cylinder) // 0 (0.3 -0.1 -2) project ($aerofoil.xLead -0.1 $aerofoil.zLead) (aerofoil) // 4 (0 -0.1 0) project ($aerofoil.xTrail -0.1 $aerofoil.zTrail) (aerofoil)// 5 (1 -0.1 0) My problem is following: Is the function 'project' a mapping? What the relationship between the points "($aerofoil.xLower -0.1 $domain.zMin)" and cylinder(cylinder is a geometry)? How does the 'project' function work? I welcome any answer, and I believe the more discussed the question, the clearer it becomes.

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October 27, 2023, 09:47		#2
Lorenzo210 Member Lorenzo Join Date: Apr 2020 Location: Italy Posts: 36 Rep Power: 6	Hi, I think "project" is projecting or mapping the vertex onto the surface indicated (cylinder or aerofoil), which has been loaded before. It should be referring to the source file you can find in the following link: https://www.openfoam.com/documentati...8H_source.html Other useful files are located in: FOAM_SRC/mesh/blockMesh Regards, Lorenzo