How to graph this 'for' loop

Hi there, I am having trouble graphing this for loop.

j=0;

for j = 0:1.0035

Re(j) = (30*j)/(60.21*10^-6);

Nu(j) = 0.453*((Re(j))^(1/2))*((0.690)^(1/3));

h(j) = (Nu(j)*(49.7*10^-3))/j;

T_s(j) = (q_flux/h(j)) + T_inf;

j = j+dx;

end

plot(x,Re); hold on

I keep getting the error

Array indices must be positive integers or logical values.

Answer 1

[Star Strider]

Try something like this (with the correct variable values):

T_inf = eps;                                                % Not Provided
q_flux = 42;                                                % Not Provided
dx = 0.01;                                                  % Not Provided
x = 0:dx:1.0035;
for j = 1:numel(x)
    Re(j) = (30*x(j))/(60.21E-6);
    Nu(j) = 0.453*((Re(j))^(1/2))*((0.690)^(1/3));
    h(j) = (Nu(j)*(49.7E-3))/x(j);
    T_s(j) = (q_flux/h(j)) + T_inf;
end

figure
plot(x,Re)
grid

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[Zachary Lodigensky]

Thank you very much!

[Star Strider]

My pleasure!

If my Answer helped you solve your problem, please Accept it!

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