- Post By Zacharie Prigent
- 2 months ago
- Post Type Public
Hi everyone,
I have a question concerning the mixing plane interface method : it seems to me that the method can generate numerical errors when reverse flow occurs on the interface.
To be more specific, I have a radial interface between the outlet of a centrifugal impeller and the inlet of its diffuser. On a specific zone of the interface, reverse flow occurs with a radial circumferential angle -180° < circAng < -90°, whereas on the rest of the interface, there is no reverse flow and 90° < circAng < 180°. In one of my former post on the forum, you confirmed to me that the weighted surface average of the circumferential angle might be distorted in this situation. It seems to me that the mixing plane method at the interface also encounter issues in this situation to estimate the value of circumferential angles for the inlet patch of the interface, in the strips where circAng oscillate between 90° < circAng < 180° and 180° < circAng < -90°. Indeed, I can see this kind of numerical errors when post-processing my simulations.
Do you have some recommendations to avoid this kind of problems ? For example, use specific configuration options, or different interface conditions ?
Thanks in advance !
Zacharie
