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#1241 (Missing boundary conditions on vertical mixing variables) – NEMO

Opened 10 years ago

Closed 5 years ago

#1241 closed Defect (fixed)

Missing boundary conditions on vertical mixing variables

Reported by: jchanut Owned by: smasson
Priority: low Milestone:
Component: AGRIF Version: trunk
Severity: minor Keywords:
Cc: smasson


  1. Masson reported this one.

Vertical mixing schemes that make use of prognostic equations for turbulent quantities (ie. TKE and GLS) need boundary conditions.
Although 1d, production term in these schemes is computed taking half-sums of turbulent stresses at velocity points which themselves need half sums of viscosities. Hence, viscosities at T-boundary points are needed. As it is done, prognostic equations for turbulent quantities are computed at boundary points. A bit questionable, since all quantities are prescribed at these points. Sebastien reported related issues in a nested configuration crossing the equator, where shear instability is important.
Not that this issue is likely to occur with "off-line" open boundaries (key_bdy).

Commit History (0)

(No commits)

Change History (3)

comment:1 Changed 8 years ago by jchanut

comment:2 Changed 6 years ago by clevy

  • Cc smasson added
  • Owner changed from nemo to smasson
  • Status changed from new to assigned

comment:3 Changed 5 years ago by jchanut

  • Resolution set to fixed
  • Severity set to minor
  • Status changed from assigned to closed
  • Version changed from v3.6 to trunk

AGRIF Boundary conditions for both TKE and GLS have been implemented in the trunk.

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