UoB : Dept. of Math. : BOM : Old news

Older "latest" items

BOM
resources:

Main page
Online manual
Applications
Latest
Publications
User group
Useful links

Dep.Mat.UoB
CMU
IMR
Para//ab

Downloads:

BOM 4.1:
 download the code
 userguide: PDF -->

Previous versions:

BOM 3.2:
 get source code
 userguide: PS

BOM 2.0:
 get source code
 userguide: PS

BOM 1.2:
 get source code
 userguide: PS

2001-02-01 BOM 2.0 is out

Version 2.0 is on the net. Some of the new features:
  • The Coriolis term averaging described in Espelid et al. (2000) is introduced to avoid instabilities that may or will occur when applying 1/4-weights for these terms.
  • The superbee-limiter method is also used for advection of momentum. One may select the POM-form on the viscosity terms by setting a logical.
  • One may choose between the UNESCO-formulation as given in Gill or the simplified equation of state found in Wang (1984)
  • A number of routines have been made more efficient on shared memory parallel computers by introducing OpenMP directives and rewriting loops. Some routines are made more efficient by introducing arrays that enable looping over wet points only. The work on parallelization and improving the efficiency has been done by Helge Avlesen, Parallab, University of Bergen.

2000-10-12: First annual meeting in numerical ocean modeling, Hell

The first annual meeting in numerical ocean modeling in Norway will be held 9-10 January 2001 at Rica Hell Hotell, Stjørdal.

2000-03-22: Improved the inclusion of wind

Experiments with very strong winds (up to 31 m/s) has showed that it is necessary to include the effects of surface stress in the 2-D equations. So the effects of WUSURF, WVSURF, WUBOT and WVBOT are included in the equations for UA and VA. This had only minor effects on the results for the Osteroy case, since these cases are not driven by winds.

2000-02-24: Important correction to Main.f90

Yngve Heggelund found the statement ETA = ETAP in Main.f90. This is obviously uncorrect. The correct statement is: ETAP = ETA which is now placed in version 1.1 of BOM and the user guide with results from BOM is now updated accordingly. The Flow of water with the tide in and out is now running much more credibly. Previos problems at the open boundaries with the modesplit BOM reported by Eliassen and Avlesen were probably due to this error. In the Saltstraumen studies by Eliassen and Heggelund the correct statement ETAP = ETA was used, but the bug must have been introduced sometime after the spring of 1999. Please check in your code that you have ETAP = ETA in Main.f90

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