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How to Visualize Kelvin Wake?

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How to Visualize Kelvin Wake?

I try to visualize Kelvin Wake (ref:  and FAST UMR 7608 :: Instabilities, Waves and Turbulence :: Ship wakes Kelvin or Mach angle ( I could see Kelvin wake in Material View (green circle) and close perspective rendering. But wen I see from bird view rendering, I don't see the Kelvin wake. 

My current guess, Wave Height and Wave Size in Simulation Attributes, BossSpectralWave1 is too big, so it hide the Kelvin wave.  Their values are currently 1.0 and 2.5, respectively. 


I am following May official tutorial at


Any suggestion appreciated, thanks. 


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