I am having trouble with the equation below for the U component of the orbital velocity in the x direction for a particle in a wave. I have the encountered data and therefore the static data also. I am wondering if I should use the encountered wave number, k, or the static one? If I use the encountered the velocity looks good approaching zero at roughly -0.55m below the free surface (this is a water wave). yet for consistency I used the static wave number and the velocity does not dissipate as rapidly as is should with depth.(adsbygoogle = window.adsbygoogle || []).push({});

Does anyone have any idea as which would be best?

Thanks!

U-velocity = a[m]*omega[rad*s^-1]*e^(k[m^-1]*z[m])*sin((k[m^-1]*x[m])-(omega(encountered)[rad*s^-1]*t))

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# Wave orbital velocity components

Can you offer guidance or do you also need help?

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