Two question about Wave simulation
1.How to simulate irregular wave in Wave Boundary Condition?
2.How to get a wave height data from the computation result by Flow3D? We can only get "fraction of fluid", "Pressure", "Fluid velosities",etc,. Thanks! 
Re: Two question about Wave simulation
1. You may need to decompose the incoming irregular wave into several linear waves at the wave boundary, using Fourier transform.
2. You may get the wave height by measuring the fluid elevation/depth. To get fluid elevation/depth, users need to choose the variable in the Selected Data list under the Output panel. 
Re: Two question about Wave simulation
As you say, I set a probe at the considering area,then
render the fluid depth from the probe.Then I can get a time series of water depth.But this data must be done some statistics to get the wave height at this point. Please Tell me how do you deal with this data to get a wve height? 
Re: Two question about Wave simulation
If you are using v9.3.*, the fluid elevation is computed as the zcoordinate of the topmost fluid element in a vertical column. Fluid depth is computed as the difference between Fluid elevation and the zcoordinate of the bottommost blocked element in a vertical column.
The information can be found in "Help > Contents > MODEL REFERENCE > OVERVIEW > How Do I Model...? > Hydraulics Data". 
Re: Two question about Wave simulation
Sorry. I understood the question wrong at the beginning. To measure the wave height, you may need to obtain the fluid elevation/height and plot it along the wave direction. That way, you can find the crest and trough in the plot and the difference would be the height.

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