With so many variables it would be a good idea to store them in a structure anyway, to avoid workspace clutter and to make passing and storing those variables much simpler. And when these variables are stored in a structure it also makes your task easy:
S.rt = 3;
S.Ps = 5.3;
S.tt = 600;
S.Tjh = 1;
S.Tjc = 18;
S.n=[5,6,8,9];
S.tad=0.01328;
S.mc=0.001566;
S.ps=30;
S.dt=0.002;
S.A = 0.09;
S.Ay = 2;
S.Kad=4;
S.h=844;
%
V = structfun(@numel,S);
C = fieldnames(S);
assert(nnz(V>1)==1,'Too many vectors')
for k = S.(C{V>1})
disp(k)
end
this detects that S.n is a vector, and prints its values in the loop:
5
6
8
9
