RMS values for velocity at a plane section of the domain

Rob715 · March 25, 2020, 17:54

Hello everyone

does anyone know how to get RMS values for velocity at a plane section of the domain within an transient simulation in STAR-CCM+ ?

Thanks

LuckyTran · March 26, 2020, 18:25

Create the plane in a derived part.

Create a monitor for the variance of velocity and select that plane.

Run the transient simulation and voila.

Technically this isn't the rms yet, you still need to take the sqrt root of it in a user defined field function.

Also, you probably mean rmse and not rms velocity. If you actually want the rms velocity then remember to add the mean back in.

March 25, 2020, 17:54	RMS values for velocity at a plane section of the domain	#1
Rob715 New Member Rob Join Date: May 2019 Posts: 3 Rep Power: 7	Hello everyone does anyone know how to get RMS values for velocity at a plane section of the domain within an transient simulation in STAR-CCM+ ? Thanks

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March 26, 2020, 18:25		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,761 Rep Power: 66	Create the plane in a derived part. Create a monitor for the variance of velocity and select that plane. Run the transient simulation and voila. Technically this isn't the rms yet, you still need to take the sqrt root of it in a user defined field function. Also, you probably mean rmse and not rms velocity. If you actually want the rms velocity then remember to add the mean back in.