Learning Forum

[asustark700]

Hi there!!!
Hope you are doing good today.

 

I'm doing cfd of an impeller in CFX using turbo mode.

In this YouTube tutorial, Negative sign is used to change the direction of rotation of the impeller.

But I am using an expression (speed, as an input parameter) to provide rpm. but i keep failing to change the direction with negative sign.

I tried following

1. - speed , 60000 (negative sign with expression speed while putting boundary condition, keeping value positive in input parameter)

2.  speed , -60000 (positive sign with expression speed while putting boundary condition, keeping value negative in input parameter)

 

Problem: Now I am unable to provide correct direction of rotation to my impeller. it is revolving in opposite direction.

what is the solution? 

 

sending positive vibes...!

cheap person

[CFD_Friend]

Hi,

Is the direction of rotation working without the use of an expression?