- Timestamp:
- 2016-07-19T10:38:35+02:00 (8 years ago)
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branches/NERC/dev_r5549_BDY_ZEROGRAD/DOC/TexFiles/Namelist/namdyn_ldf
r4147 r6808 1 1 !----------------------------------------------------------------------- 2 &namdyn_ldf ! lateral diffusion on momentum 2 &namdyn_ldf ! lateral diffusion on momentum (default: NO) 3 3 !----------------------------------------------------------------------- 4 4 ! ! Type of the operator : 5 ln_dynldf_lap = .true. ! laplacian operator 6 ln_dynldf_bilap = .false. ! bilaplacian operator 5 ! ! no diffusion: set ln_dynldf_lap=..._blp=F 6 ln_dynldf_lap = .false. ! laplacian operator 7 ln_dynldf_blp = .false. ! bilaplacian operator 7 8 ! ! Direction of action : 8 ln_dynldf_lev el = .false.! iso-level9 ln_dynldf_hor = .true. ! horizontal (geopotential) (require "key_ldfslp" in s-coord.)10 ln_dynldf_iso = .false. ! iso-neutral (require "key_ldfslp")9 ln_dynldf_lev = .false. ! iso-level 10 ln_dynldf_hor = .false. ! horizontal (geopotential) 11 ln_dynldf_iso = .false. ! iso-neutral 11 12 ! ! Coefficient 12 rn_ahm_0_lap = 40000. ! horizontal laplacian eddy viscosity [m2/s] 13 rn_ahmb_0 = 0. ! background eddy viscosity for ldf_iso [m2/s] 14 rn_ahm_0_blp = 0. ! horizontal bilaplacian eddy viscosity [m4/s] 15 rn_cmsmag_1 = 3. ! constant in laplacian Smagorinsky viscosity 16 rn_cmsmag_2 = 3 ! constant in bilaplacian Smagorinsky viscosity 17 rn_cmsh = 1. ! 1 or 0 , if 0 -use only shear for Smagorinsky viscosity 18 rn_ahm_m_blp = -1.e12 ! upper limit for bilap abs(ahm) < min( dx^4/128rdt, rn_ahm_m_blp) 19 rn_ahm_m_lap = 40000. ! upper limit for lap ahm < min(dx^2/16rdt, rn_ahm_m_lap) 13 nn_ahm_ijk_t = 0 ! space/time variation of eddy coef 14 ! ! =-30 read in eddy_viscosity_3D.nc file 15 ! ! =-20 read in eddy_viscosity_2D.nc file 16 ! ! = 0 constant 17 ! ! = 10 F(k)=c1d 18 ! ! = 20 F(i,j)=F(grid spacing)=c2d 19 ! ! = 30 F(i,j,k)=c2d*c1d 20 ! ! = 31 F(i,j,k)=F(grid spacing and local velocity) 21 rn_ahm_0 = 40000. ! horizontal laplacian eddy viscosity [m2/s] 22 rn_ahm_b = 0. ! background eddy viscosity for ldf_iso [m2/s] 23 rn_bhm_0 = 1.e+12 ! horizontal bilaplacian eddy viscosity [m4/s] 24 ! 25 ! Caution in 20 and 30 cases the coefficient have to be given for a 1 degree grid (~111km) 20 26 /
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