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**Subsections**

#

cbfset.F

##

subroutine cbfset

**
Calculates the bottom drag coefficient assuming a logarithmic boundary layer.
**

**
Where C_d is the bottom drag coefficient, is the Von Karman
constant
is the bed roughness length and is the hight above the bed. If is
less than 0.005,
is assumed to be 0.005
**

**
none
**

**vkappa** Von Karman constant.
**z0** Bed roughness.
**i,j** Grid indeces.

**cdb**

- none

- Sets the Von Karman constant and roughness values.
- Calculates the drag coefficient.
- Sets the drag coefficient to be 0.005 or larger.

- none

- b3dinit, barot

- none

**MY25CBF**
**SCOORD**
**COASTFRIC** An experimental option to increase friction near coasts -
can be unstable.

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The AMMP Project
2005-04-20