wave induced bed shear stress  Coast/Estuary  Delft3D
intro story Coast / Estuary
Coast / EstuaryCoastal systems are among the most dynamic physical systems on earth and are subject to a large variety of forces. The morphodynamic changes occurring to coastlines worldwide are of great interest and importance. These changes occur as a result of the erosion of sediments, its subsequent transport as bed load or suspended load, and eventual deposition. Estuaries are partly enclosed water bodies that have an open connection to the coast. Estuaries generally have one or more branching channels, intertidal mudflats and/or salt marshes. Intertidal areas are of high ecological importance and trap sediments (sands, silts, clays and organic matter). Within the Delft3D modelling package a large variation of coastal and estuarine physical and chemical processes can be simulated. These include waves, tidal propagation, wind or waveinduced water level setup, flow induced by salinity or temperature gradients, sand and mud transport, water quality and changing bathymetry (morphology). Delft3D can also be used operationally e.g. storm, surge and algal bloom forecasting. On this discussion page you can post questions, research discussions or just share your experience about modelling coastal and/or estuarine systems with Delft3D FM. ** PLEASE TAG YOUR POST! **  Sub groups

Message Boards
wave induced bed shear stress
AA
Anonymous Anonymous, modified 6 Years ago.
wave induced bed shear stress
Jedi Master Posts: 333 Join Date: 7/30/20 Recent Posts 00
Dear all,
I am trying the figure out what is the amplitude of waveinduced shear stress in my simulation. Since I can't get waveinduced shear stress directly from QUICKPLOT, I have to calculate it by myself. From FLOW manual, Eq. (9.202), I can tell it depends on the a parameter "friction factor" f_w.
My question is, what "Nikuradse roughness lengthscale" is used for the calculation of friction factor and then waveinduced shear stress?
Any suggestion is appreciated!
Thanks!
I am trying the figure out what is the amplitude of waveinduced shear stress in my simulation. Since I can't get waveinduced shear stress directly from QUICKPLOT, I have to calculate it by myself. From FLOW manual, Eq. (9.202), I can tell it depends on the a parameter "friction factor" f_w.
My question is, what "Nikuradse roughness lengthscale" is used for the calculation of friction factor and then waveinduced shear stress?
Any suggestion is appreciated!
Thanks!
AA
Anonymous Anonymous, modified 6 Years ago.
RE: wave induced bed shear stress
Jedi Master Posts: 333 Join Date: 7/30/20 Recent Posts 00
Merry Christmas, and I really appreciate if any one can help!
K Liu:
Dear all,
I am trying the figure out what is the amplitude of waveinduced shear stress in my simulation. Since I can't get waveinduced shear stress directly from QUICKPLOT, I have to calculate it by myself. From FLOW manual, Eq. (9.202), I can tell it depends on the a parameter "friction factor" f_w.
My question is, what "Nikuradse roughness lengthscale" is used for the calculation of friction factor and then waveinduced shear stress?
Any suggestion is appreciated!
Thanks!
I am trying the figure out what is the amplitude of waveinduced shear stress in my simulation. Since I can't get waveinduced shear stress directly from QUICKPLOT, I have to calculate it by myself. From FLOW manual, Eq. (9.202), I can tell it depends on the a parameter "friction factor" f_w.
My question is, what "Nikuradse roughness lengthscale" is used for the calculation of friction factor and then waveinduced shear stress?
Any suggestion is appreciated!
Thanks!