Deep Water Wave Generation Problem

Mahdi_co_1368 · March 10, 2015, 18:43

I'm going to simulate & compare two waveMaker (Piston vs Flap Wavemaker) and My first requirement is " Piston Wavemaker CEL expressions "
I'm attempting to generate a simple linear wave in a 2D tank of length 20m and depth 5.1m. My mean water depth is 4m and my max wall displacement is 0.7m . (I've attached drawing of my setup)
The wave frequency is 0.5 Hz and the wave length is 3m.
I am new to this type of work and am a little Concerned about using Best CEL expressions
Does anyone have an example of this *.CCL File ?
I can not find “A series of expressions” for this work (Piston Wavemaker) !!!

Thanking you in advance

drawing of my setup ==>

ghorrocks · March 11, 2015, 00:51

Define these CEL expressions:
MaxWallDisplacement = 0.7[m]
WallFrequency = 0.5[Hz]

And put this as the piston mesh motion displacement:

Wall Displacement X = MaxWallDisplacement * sin(t*WallFrequency/(2*pi))

Mahdi_co_1368 · March 11, 2015, 01:44

Quote:

Originally Posted by ghorrocks

Define these CEL expressions:
MaxWallDisplacement = 0.7[m]
WallFrequency = 0.5[Hz]

And put this as the piston mesh motion displacement:

Wall Displacement X = MaxWallDisplacement * sin(t*WallFrequency/(2*pi))

Thank you for your response
I also have another question

Is my BCs correct?

ghorrocks · March 11, 2015, 06:23

Looks good to me.

March 10, 2015, 18:43	Deep Water Wave Generation Problem	#1
Mahdi_co_1368 New Member Cold_Fire Join Date: Mar 2015 Posts: 10 Rep Power: 11	I'm going to simulate & compare two waveMaker (Piston vs Flap Wavemaker) and My first requirement is " Piston Wavemaker CEL expressions " I'm attempting to generate a simple linear wave in a 2D tank of length 20m and depth 5.1m. My mean water depth is 4m and my max wall displacement is 0.7m . (I've attached drawing of my setup) The wave frequency is 0.5 Hz and the wave length is 3m. I am new to this type of work and am a little Concerned about using Best CEL expressions Does anyone have an example of this *.CCL File ? I can not find “A series of expressions” for this work (Piston Wavemaker) !!! Thanking you in advance drawing of my setup ==>

March 11, 2015, 00:51		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	Define these CEL expressions: MaxWallDisplacement = 0.7[m] WallFrequency = 0.5[Hz] And put this as the piston mesh motion displacement: Wall Displacement X = MaxWallDisplacement * sin(tWallFrequency/(2pi)) Mahdi_co_1368 likes this.

March 11, 2015, 06:23		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	Looks good to me. Mahdi_co_1368 likes this.

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