Difference between revisions of "Biharmonic"
From MohidWiki
| Line 18: | Line 18: | ||
Delhez, E., & Deleersnijder, E. (2007). Overshootings and spurious oscillations caused by biharmonic mixing. | Delhez, E., & Deleersnijder, E. (2007). Overshootings and spurious oscillations caused by biharmonic mixing. | ||
Ocean Modelling, 17(3), 183-198. doi: 10.1016/j.ocemod.2007.01.002. | Ocean Modelling, 17(3), 183-198. doi: 10.1016/j.ocemod.2007.01.002. | ||
| + | |||
| + | [[Category:MOHID]] | ||
| + | [[Category:Hydrodynamic]] | ||
Revision as of 15:22, 28 June 2011
The biharmonic coefficient is an extra term that is added to the horizontal turbulent viscous flux, J:
A ready made formula that would estimate the order of magnitude of the 
coefficient would be
where U is a typical flow velocity and 
is the numerical model horizontal resolution.
MOHID
In mohid, you need to add in the Hydrodynamic_x.dat the following keywords:
BIHARMONIC : [0/1] <-- Activates de biharmonic viscous flux BIHARMONIC_COEF : [Real] <-- Sets the value of
References
Delhez, E., & Deleersnijder, E. (2007). Overshootings and spurious oscillations caused by biharmonic mixing. Ocean Modelling, 17(3), 183-198. doi: 10.1016/j.ocemod.2007.01.002.
