| CALC : Ocean : Wave 411 : Combined Ocean Current And Wave Velocity : Airy Stokes And Cnoidal Wave : Calculator
Description : Calculate the combined current and wave velocity.
Discussion : Calculates the wave velocity and acceleration, the current velocity, and the total velocity. Check that the convergence check value is close to or equal to one.
Options :
- Wave type : Airy, Stokes, Cnoidal or User defined amplitude
- Current type : One Seventh Power Law, Logarithmic Or User
Input Variables :
- Θ = Wave Phase Angle
- A = Horizontal Acceleration Amplitude
- C = Current Type
- H = Ocean Wave Height
- T = Ocean Wave Period
- U = Horizontal Velocity Amplitude
- Um = Reference Velocity
- W = Wave Type
- d = Water Depth
- r = Seabed Roughness
- zc = Height Above Seabed
- zm = Reference Elevation
Output Variables :
- Aw = Horizontal Acceleration Phase
- Uc = Current Velocity
- Ut = Total Velocity
- Uw = Horizontal Velocity Phase
- cvg = Convergence Check
Calculation :
If C = 1 : Power Law
Uc = Um ( zc / zm ) 1 / 7
Otherwise If C = 2 : Log Law
Uc = Um log( zc / r ) / log( zm / r )
Otherwise If C = 3 : User
Uc = Um
End of If Block
If W = 1 : Airy
list( Uw , Aw , cvg ) = AiryTU( H , d , T , zc , Θ )
Otherwise If W = 2 : Stokes
list( Uw , Aw , cvg ) = StokesTU( H , d , T , Θ , zc )
Otherwise If W = 3 : Cnoidal
list( Uw , Aw , cvg ) = CnoidalTU( H , d , T , Θ , zc )
Otherwise If W = 4 : User Defined
cvg = 1
Uw = U cos( Θ )
Aw = A sin( Θ )
End of If Block
Ut = Uc + Uw
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