# Wave tutorial

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 June 6, 2018, 20:25 Wave tutorial #1 New Member   Jeferson Souza Join Date: Jan 2012 Location: Brazil Posts: 8 Rep Power: 10 Dear all, I'm trying to understand how to set wave parameters in the new openFoam 5.0 wave tutorial. Basically, I do not understand what is the speed parameter. Is it the wave velocity? Description talk about "mean flow speed", but I don't know what it means? For example for a wave with the following parameters wave length = 65.4 m period = 7.5 s height = 1 m how can I set up the waveVelocity boundary condition? left { type waveVelocity; origin (0 0 0); direction (1 0 0); speed ????? (what should I put here?); waves ( Airy { length 65.4; amplitude 0.5; phase 0; angle 0; } ); scale constant 1; crossScale constant 1; } Thanks,

 June 7, 2018, 15:37 #2 Member     Jan Join Date: Jul 2009 Location: Hamburg Posts: 72 Rep Power: 15 Speed is an additional current, I.e. if you solve a ship sailing in waves with forward speed. In case you only want to have a wave without current, set speed to zero aow likes this.

 June 12, 2018, 11:30 #3 New Member   Jeferson Souza Join Date: Jan 2012 Location: Brazil Posts: 8 Rep Power: 10 Thanks a lot.

 September 25, 2018, 23:54 #4 New Member   Ian Join Date: Aug 2018 Posts: 14 Rep Power: 3 Hi, Jeferson I'm trying to understand the parameters of waveVelocity recently, but a few parameters confused me a lot 1) scale table ((1200 1) (1800 0)); 2) scale and crossScale(I have never seen before) 3) note that speed does not mean wave velocity how to set it any advice would be great appreciated thanks in advance

October 7, 2019, 05:26
#5
Member

Rasmus Iwersen
Join Date: Jan 2019
Location: Denmark
Posts: 63
Rep Power: 4
Quote:
 Originally Posted by jasouza1974 Dear all, I'm trying to understand how to set wave parameters in the new openFoam 5.0 wave tutorial. Basically, I do not understand what is the speed parameter. Is it the wave velocity? Description talk about "mean flow speed", but I don't know what it means? For example for a wave with the following parameters wave length = 65.4 m period = 7.5 s
where is the period specified?? I can see where wave length and the amplitude. However, the period doesn't seem to be specified anywhere.

 Tags openfoam 5.0, speed, wave boundary conditions