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% This is a matlab script that generates the input data |
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|
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% $Header: /u/gcmpack/MITgcm/verification/exp4/input/gendata.m,v 1.7 2011/05/02 19:35:38 jmc Exp $ |
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% $Name: $ |
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|
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% Dimensions of grid |
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nx=80; |
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ny=42; |
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nz=8; |
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% Nominal depth of model (meters) |
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H=4500; |
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% Scale of bump (m) |
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L=25e3; |
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% Height of bump (m) |
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dh=0.90*H; |
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% Horizontal resolution (m) |
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dx=5e3; |
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% Rotation |
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f=1e-4; |
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% Stratification |
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N=1.5 * f*L/H; |
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|
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% Gravity |
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g=9.81; |
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% E.O.S. |
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alpha=2.e-4; |
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|
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Tz=N^2/(g*alpha); |
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fprintf(' Tz= %e ;',Tz); |
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|
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dz=H/nz; |
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fprintf(' delZ = %d * %7.6g\n',nz,dz); |
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|
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x=(1:nx)*dx;x=x-mean(x); |
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y=(1:ny)*dx;y=y-mean(y); |
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z=-dz/2:-dz:-H; |
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|
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[Y,X]=meshgrid(y,x); |
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|
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% Temperature profile |
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fprintf('Tref ='); fprintf(' %8.6g,',Tz*z-mean(Tz*z)); fprintf('\n'); |
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|
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ieee='b'; |
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prec='real*8'; |
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|
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% Gaussian bump |
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h=-H+dh*exp( -(X.^2+Y.^2)/(2*(L^2)) ); |
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fid=fopen('topog.bump','w',ieee); fwrite(fid,h,prec); fclose(fid); |
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|
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% $$$ % Side walls + bump |
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% $$$ h(:,1)=0; |
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% $$$ h(:,ny)=0; |
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% $$$ fid=fopen('topog.bumpchannel','w',ieee); fwrite(fid,h,prec); fclose(fid); |
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|
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% $$$ % Simple channel |
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% $$$ h(:,1)=0; |
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% $$$ h(:,2:ny-1)=-H; |
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% $$$ h(:,ny)=0; |
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% $$$ fid=fopen('topog.channel','w',ieee); fwrite(fid,h,prec); fclose(fid); |
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|
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% initial fields for salinity |
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si = 35; |
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%fid=fopen('S.init','w',ieee); fwrite(fid,si*ones(nx,ny,nz),prec); fclose(fid); |
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|
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% open boundary conditions; |
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u0 = .25; |
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s0 = si+1; |
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w0= 1.e-3; |
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|
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% create two time slabs for testing |
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uMerid = cat(3,u0*ones(nx,nz),u0*ones(nx,nz)); |
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uZonal = cat(3,u0*ones(ny,nz), zeros(ny,nz)); |
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sZonal = cat(3,s0*ones(ny,nz),s0*ones(ny,nz)); |
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|
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%- time varying fraction = 1 % of full velocity |
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du=u0*0.01; |
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uWest = cat(3,(u0+du)*ones(ny,nz),(u0-du)*ones(ny,nz)); |
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uEast = cat(3,(u0-du)*ones(ny,nz),(u0+du)*ones(ny,nz)); |
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|
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% to test Non-Hydrostatic OBCS: |
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w1=[0:nz-1]*pi/nz; w1=-w0*sin(w1); |
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wZonal = cat (3, ones(ny,1)*w1, zeros(ny,nz)); |
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|
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% to test prescribing Eta in NonLin-FreeSurf formulation: |
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et1=0.1; |
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etWest = cat(2,+et1*ones(ny,1),-et1*ones(ny,1)); |
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etEast = cat(2,-et1*ones(ny,1),+et1*ones(ny,1)); |
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|
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fid=fopen('OBmeridU.bin','w',ieee); fwrite(fid,uMerid,prec); fclose(fid); |
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%fid=fopen('OBzonalU.bin','w',ieee); fwrite(fid,uZonal,prec); fclose(fid); |
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fid=fopen('OB_WestU.bin','w',ieee); fwrite(fid,uWest ,prec); fclose(fid); |
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fid=fopen('OB_EastU.bin','w',ieee); fwrite(fid,uEast ,prec); fclose(fid); |
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fid=fopen('OBzonalS.bin','w',ieee); fwrite(fid,sZonal,prec); fclose(fid); |
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fid=fopen('OBzonalW.bin','w',ieee); fwrite(fid,wZonal,prec); fclose(fid); |
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fid=fopen('OB_WestH.bin','w',ieee); fwrite(fid,etWest,prec); fclose(fid); |
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fid=fopen('OB_EastH.bin','w',ieee); fwrite(fid,etEast,prec); fclose(fid); |
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|
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%- rbcs mask & restauring tracer field: |
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msk=ones(nx,ny,nz); |
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xMx=max(x); |
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shapeX=(x-xMx)/dx; |
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shapeX=exp(shapeX*2/3); |
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|
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[I]=find(shapeX < 5.e-3); fprintf('zero out rbc-mask up to i= %i\n',max(I)); |
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shapeX(I)=0.; |
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var=shapeX'*ones(1,ny*nz); |
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fid=fopen('rbcs_mask.bin','w',ieee); fwrite(fid,var,prec); fclose(fid); |
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|
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tr1=(si+s0)/2; |
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var=tr1*ones(nx,ny,nz); |
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fid=fopen('rbcs_Tr1_fld.bin','w',ieee); fwrite(fid,var,prec); fclose(fid); |
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