Inclined particle bed problem

Hello sir,

In the below pictures I could only rotate the bed to 27 degree but there is a issue in setting up the regions inlet and outlet. Also the particles are not flowing in the right way that I expected.

A: Please attach your project files (Main menu/Submit bug report/upload ZIP file here)
B: What is the issue in setting up the regions inlet and outlet?
C: You may find it easier to rotate the gravity vector than to rotate your model.

How to rotate gravity vector in mfix dem gui? Do I need to use udf?

You can use the keyword search to locate controls:

Searching for “gravity” and clicking “locate control” will take you to the model setup pane:

You can enter any values you want here, also if you are using MFiX 25.1 you can enter the value in this form:
shot-2025-04-29_07-38-07

(sin and cos functions expect input in radians, multiplying by the “degree” unit will convert to correct form)