CMS-Flow:Ripple Dimensions: Difference between revisions
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Created page with "The bed forms calculated by CMS are the wave- and current-related ripples. The ripple height (used to calculate the mixing layer thickness) is estimated as the maximum of the ..." |
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The bed forms calculated by CMS are the wave- and current-related ripples. The ripple height (used to calculate the mixing layer thickness) is estimated as the maximum of the current- and wave-related ripple heights | The bed forms calculated by CMS are the wave- and current-related ripples. The ripple height (used to calculate the mixing layer thickness) is estimated as the maximum of the current- and wave-related ripple heights | ||
{{Equation|<math>H_r = max(H_{r,c}, H_{r,w})</math>|1}} | |||
The current-related ripple height and length are calculated as (Soulsby 1997) | |||
{{Equation|<math> H_{r,c} = L_{r,c}/7 </math>|2}} | |||
{{Equation|<math> L_{r,c} = 1000d_{50} </math>|3}} | |||
The wave-related ripple height and length are calculated using the expressions proposed by van Rijn (1984b, 1989): | |||
{{Equation|<math> | |||
H_{r,w} = \left\{\begin{align} | |||
&0.22A_w \quad \quad for \ \psi_w < 10 \\ | |||
&2.8 \ x\ 10^{-13}(250 - \psi_w)^5 A_w \quad for \ 10 \quad \leq \psi_w <250 \\ | |||
&0 \quad \quad \quad \quad \quad for \ 250 \leq \psi_w | |||
\end{align} \right.</math>|4}} | |||
= References = | = References = | ||
Revision as of 19:42, 27 October 2014
The bed forms calculated by CMS are the wave- and current-related ripples. The ripple height (used to calculate the mixing layer thickness) is estimated as the maximum of the current- and wave-related ripple heights
| (1) |
The current-related ripple height and length are calculated as (Soulsby 1997)
| (2) |
| (3) |
The wave-related ripple height and length are calculated using the expressions proposed by van Rijn (1984b, 1989):
| (4) |