Inner Matrix Dimension must agree

Error using * Inner matrix dimensions must agree.

K5 = 0.09*(L2/0.115) * (B.^4/(1-B.^4));

[KALYAN ACHARJYA]

What are L2 and B?

Answer 1

[madhan ravi]

K5 = 0.09.*(L2/0.115).* (B.^4/(1-B.^4));

Remark: Make sure the sizes of L2 and B are the same

[Shikhar]

the size of L2 and B is 88x1.

[madhan ravi]

Didn’t it solve the problem?

Answer 2

[Jan]

It is not clear what you want to achieve.

C1 = 0.09 * (L2 / 0.115);   % More efficient: (0.09 / 0.115) * L2
C2 = B.^4 / (1 - B .^ 4);   % Or:
C2 = B.^4 ./ (1 - B .^ 4);  % ???  More efficient: 1 / (1 / B .^4 - 1)

K5 = C1 .* C2;

If this does not help, post the dimensions of the inputs and explain, what you want to calculate and expect as result.

[Shikhar]

The equation is Stolz eqn to find the coefficient of discharge, as a whole my eqn looks like this,

C = (0.5959*B.^0)+(0.0132*B.^2.1)-(0.1840*B.^8)+(((10^6)/(Re)).^0.75)*((0.0029*B.^2.5))+0.09*((L2.*1000)/115).*(B.^4./(1-B.^4))+0.0337*(L1/B).*B.^3

Earlier I was taking individual parts of the algebraic sum as K1, K2, K3, K4, K5 and finally substituting the values to form the same thing I mentioned above, but that too yields the same error.

B is the ratio of diameter, L1 is the distance of station from upstream and L2 is same from downstream. Re is the reynolds number.

[Shikhar]

the size of all the variables is 88x1.