alpha.water rotates opposite to the velocity arrows -- CFD Online Discussion Forums

September 29, 2025, 10:08

alpha.water rotates opposite to the velocity arrows

weng1234

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Weng

Join Date: Aug 2025

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Hey there, in OpenFOAM/v2312 interFoam/mixerVessel2D tutorial, I noticed that the alpha distribution moves against the direction to which the velocity glyph arrows point. In the pictures the alpha is moving negatively around the z-axis, but the arrows positively.
Has anyone else noticed this problem? It seems to reoccur in other multiphase MRF tutorials and I encountered it when trying to set up an InterFoam MRF implementation for a roller bearing model.

Attached Images

	Alpha.water.png (115.2 KB, 1 views)
	Velocity_arrows.jpg (43.2 KB, 1 views)

Last edited by weng1234; September 30, 2025 at 03:51.

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