exp4/input/gendata.m

% This is a matlab script that generates the input data

% Dimensions of grid
nx=80;
ny=42;
nz=8;
% Nominal depth of model (meters)
H=4500;
% Scale of bump (m)
L=25e3;
% Height of bump (m)
dh=0.90*H;
% Horizontal resolution (m)
dx=5e3;
% Rotation
f=1e-4;
% Stratification
N=1.5 * f*L/H;

% Gravity
g=9.81;
% E.O.S.
alpha=2.e-4;

Tz=N^2/(g*alpha)

dz=H/nz;
sprintf('delZ = %d * %7.6g,',nz,dz)

x=(1:nx)*dx;x=x-mean(x);
y=(1:ny)*dx;y=y-mean(y);
z=-dz/2:-dz:-H;

[Y,X]=meshgrid(y,x);

% Temperature profile
[sprintf('Tref =') sprintf(' %8.6g,',Tz*z-mean(Tz*z))]

ieee='b';
accuracy='real*8';

% Gaussian bump
h=-H+dh*exp( -(X.^2+Y.^2)/(2*(L^2)) );
fid=fopen('topog.bump','w',ieee); fwrite(fid,h,accuracy); fclose(fid);

% $$$ % Side walls + bump
% $$$ h(:,1)=0;
% $$$ h(:,ny)=0;
% $$$ fid=fopen('topog.bumpchannel','w',ieee); fwrite(fid,h,accuracy); fclose(fid);

% $$$ % Simple channel
% $$$ h(:,1)=0;
% $$$ h(:,2:ny-1)=-H;
% $$$ h(:,ny)=0;
% $$$ fid=fopen('topog.channel','w',ieee); fwrite(fid,h,accuracy); fclose(fid);

% initial fields for salinity
si = 35;
fid=fopen('S.init','w',ieee); fwrite(fid,si*ones(nx,ny,nz),accuracy); fclose(fid);

% open boundary conditions;
u0 = .25;
s0 = si+1;

% create two time slabs for testing
uMerid = cat(3,u0*ones(nx,nz),zeros(nx,nz));
uZonal = cat(3,u0*ones(ny,nz),zeros(ny,nz));
sZonal = cat(3,s0*ones(ny,nz),s0*ones(ny,nz));

fid=fopen('OBmeridU.bin','w',ieee); fwrite(fid,uMerid,accuracy); fclose(fid);
fid=fopen('OBzonalU.bin','w',ieee); fwrite(fid,uZonal,accuracy); fclose(fid);
fid=fopen('OBzonalS.bin','w',ieee); fwrite(fid,sZonal,accuracy); fclose(fid);
1	% This is a matlab script that generates the input data
2
3	% Dimensions of grid
4	nx=80;
5	ny=42;
6	nz=8;
7	% Nominal depth of model (meters)
8	H=4500;
9	% Scale of bump (m)
10	L=25e3;
11	% Height of bump (m)
12	dh=0.90*H;
13	% Horizontal resolution (m)
14	dx=5e3;
15	% Rotation
16	f=1e-4;
17	% Stratification
18	N=1.5 * f*L/H;
19
20	% Gravity
21	g=9.81;
22	% E.O.S.
23	alpha=2.e-4;
24
25	Tz=N^2/(g*alpha)
26
27	dz=H/nz;
28	sprintf('delZ = %d * %7.6g,',nz,dz)
29
30	x=(1:nx)*dx;x=x-mean(x);
31	y=(1:ny)*dx;y=y-mean(y);
32	z=-dz/2:-dz:-H;
33
34	[Y,X]=meshgrid(y,x);
35
36	% Temperature profile
37	[sprintf('Tref =') sprintf(' %8.6g,',Tzz-mean(Tzz))]
38
39	ieee='b';
40	accuracy='real*8';
41
42	% Gaussian bump
43	h=-H+dhexp( -(X.^2+Y.^2)/(2(L^2)) );
44	fid=fopen('topog.bump','w',ieee); fwrite(fid,h,accuracy); fclose(fid);
45
46	% $$$ % Side walls + bump
47	% $$$ h(:,1)=0;
48	% $$$ h(:,ny)=0;
49	% $$$ fid=fopen('topog.bumpchannel','w',ieee); fwrite(fid,h,accuracy); fclose(fid);
50
51	% $$$ % Simple channel
52	% $$$ h(:,1)=0;
53	% $$$ h(:,2:ny-1)=-H;
54	% $$$ h(:,ny)=0;
55	% $$$ fid=fopen('topog.channel','w',ieee); fwrite(fid,h,accuracy); fclose(fid);
56
57	% initial fields for salinity
58	si = 35;
59	fid=fopen('S.init','w',ieee); fwrite(fid,si*ones(nx,ny,nz),accuracy); fclose(fid);
60
61	% open boundary conditions;
62	u0 = .25;
63	s0 = si+1;
64
65	% create two time slabs for testing
66	uMerid = cat(3,u0*ones(nx,nz),zeros(nx,nz));
67	uZonal = cat(3,u0*ones(ny,nz),zeros(ny,nz));
68	sZonal = cat(3,s0ones(ny,nz),s0ones(ny,nz));
69
70	fid=fopen('OBmeridU.bin','w',ieee); fwrite(fid,uMerid,accuracy); fclose(fid);
71	fid=fopen('OBzonalU.bin','w',ieee); fwrite(fid,uZonal,accuracy); fclose(fid);
72	fid=fopen('OBzonalS.bin','w',ieee); fwrite(fid,sZonal,accuracy); fclose(fid);