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Add passive scalars for readnek #2

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Add passive scalars for readnek #2

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bc858a3
Add passive scalars
yslan Apr 2, 2023
4b51551
support passive scalars in writenek.m
yslan Jun 13, 2023
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11 changes: 9 additions & 2 deletions readnek.m
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@
% - metau: metadata for velocity field
% - metap: metadata for pressure field
% - metat: metadata for temperature field
% - metas: metadata for passive scalar field(s)
%
%
% Last edit: 20170810 Jacopo Canton ([email protected])
Expand All @@ -45,6 +46,7 @@
metau = [];
metap = [];
metat = [];
metas = [];

%--------------------------------------------------------------------------
% OPEN THE FILE
Expand Down Expand Up @@ -134,8 +136,8 @@
var(4) = 1;
end
if sum(fields == 'S') > 0
var(5) = 0; % TODO: scalars not implemented
disp('Passive scalars are not implemented')
ids = find(fields == 'S');
var(5) = sscanf(fields(ids+1:ids+2),'%d',1);
end
nfields = sum(var);
%
Expand Down Expand Up @@ -180,6 +182,11 @@
else
metat = [];
end
if var(5) ~= 0
metas = fread(infile,2*nel*var(5),'*float32');
else
metas = [];
end
end


Expand Down
12 changes: 9 additions & 3 deletions writenek.m
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Original file line number Diff line number Diff line change
Expand Up @@ -54,8 +54,8 @@
var(4) = 1;
end
if sum(fields == 'S') > 0
var(5) = 0; % TODO: scalars not implemented
disp('Passive scalars are not implemented')
ids = find(fields == 'S');
var(5) = sscanf(fields(ids+1:ids+2),'%d',1);
end
nfields = sum(var);
%
Expand Down Expand Up @@ -105,14 +105,20 @@
end
%
% write data
for ivar = 1:length(var)
for ivar = 1:4 % exclude passive scalar
idim0 = sum(var(1:ivar-1));
for iel = elmap
for idim = (1:var(ivar))+idim0
fwrite(outfile,data(iel,:,idim),realtype);
end
end
end
idim0 = sum(var(1:4)); % write passive scalars here
for idim = (1:var(5))+idim0
for iel = elmap
fwrite(outfile,data(iel,:,idim),realtype);
end
end

%--------------------------------------------------------------------------
% WRITE "METADATA": max and min of every field in every element
Expand Down