Input Velocity Profile

ejdrlqja · March 3, 2015, 14:17

Hi, I am trying to create velocity profile for inlet ( monopile Wind turbine foundation to analyse scouring effect). I have a sets of data of depth above seabed as X and flow speed as V. A trendline was used to produce the formula of the inlet velocity profile. V=-0.0006x^2+0.0276x+0.4661
How can I input this equation in the set up ? Please help me. It will be greatly appreciated!

ejdrlqja · March 3, 2015, 14:34

btw X range is from 0m to 31m

diamondx · March 3, 2015, 16:08

You have to create an expression... have you done some tutorials ? where expressions are used ?

ejdrlqja · March 4, 2015, 09:48

Yes I know that I need to use expression. I defined X as depth ranging from 0<=x<=31 and speed as the equation above but error comes out saying it doesn't recognise <=sign...

ghorrocks · March 4, 2015, 18:50

This is a simple application of the "if" function in CEL. Have you looked in the reference manual for the syntax it allows?

March 3, 2015, 14:17	Input Velocity Profile	#1
ejdrlqja New Member ki Join Date: Mar 2015 Posts: 6 Rep Power: 11	Hi, I am trying to create velocity profile for inlet ( monopile Wind turbine foundation to analyse scouring effect). I have a sets of data of depth above seabed as X and flow speed as V. A trendline was used to produce the formula of the inlet velocity profile. V=-0.0006x^2+0.0276x+0.4661 How can I input this equation in the set up ? Please help me. It will be greatly appreciated!

March 3, 2015, 14:34	additional info	#2
ejdrlqja New Member ki Join Date: Mar 2015 Posts: 6 Rep Power: 11	btw X range is from 0m to 31m

March 3, 2015, 16:08		#3
diamondx Super Moderator Ghazlani M. Ali Join Date: May 2011 Location: Tokyo, Japan Posts: 1,385 Blog Entries: 23 Rep Power: 29	You have to create an expression... have you done some tutorials ? where expressions are used ? __________________ Regards, New to ICEM CFD, try this document --> https://goo.gl/KAOIwm Ali

March 4, 2015, 09:48	velocity profile	#4
ejdrlqja New Member ki Join Date: Mar 2015 Posts: 6 Rep Power: 11	Yes I know that I need to use expression. I defined X as depth ranging from 0<=x<=31 and speed as the equation above but error comes out saying it doesn't recognise <=sign...

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March 4, 2015, 18:50		#5
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	This is a simple application of the "if" function in CEL. Have you looked in the reference manual for the syntax it allows?