Acusolve Reference Frame for Cartesian Velocity at Inlet

Hello Jasvinder,

The Reference Frame input field of the Simple Boundary Condition should point to a Reference Frame definition as seen here:

From your image above you could transform the (4.04, 0, 0) local vector to the global coordinate system with the same cartesian inflow velocity as you currently have defined.  Alternatively, you could specify a Normal inflow velocity type and simply specify the average normal velocity magnitude.  This approach will produce a parabolic inlet profile while the Cartesian type will produce a constant (slug flow) inlet profile:

-Bill

Thanks for the reply.

so if i want to change the velocity (or flow rate) from being normal to the inlet & to be in a different direction, such as the X-direction below, how can i do this?

i created a rectangular system & organised it to the 'LM-blkd' reference frame.

Green below is the rectangular system, black is the inlet & red is the velocity direction i want at the inlet, so it is aligned to the local X-direction.

is this possible? i could'nt get it to work.

2nd image below is what i tried.

thanks

Thanks for the reply.

 

so if i want to change the velocity (or flow rate) from being normal to the inlet & to be in a different direction, such as the X-direction below, how can i do this?

i created a rectangular system & organised it to the 'LM-blkd' reference frame.

Green below is the rectangular system, black is the inlet & red is the velocity direction i want at the inlet, so it is aligned to the local X-direction.

is this possible? i could'nt get it to work.

2nd image below is what i tried.

thanks

 

 

 

basically i want to change the velocity direction from being normal to the inlet, to be in a direction aligned to a local rectangular coordinate system.

The best way to do this would be to specify the inlet velocity components relative to the global coordinate system.

-Bill