Anyone an expert with MATLAB?

SydneyRoverP6B

Well-Known Member
Staff member
Wondering if anyone can help? I am trying to determine the point of intersection of the system characteristic and the pump characteristic for a centrifugal pump. I have values for each characteristic in the form of matrices, four in total from which a pair are common to each characteristic. I have written code in MATLAB which plots my two characteristics perfectly. I can estimate through observation what I think the operating point might be (the point of intersection), but I want to write code to perform this task to obtain a precise answer. This is where I am stuck. If I had a pair of functions, I could easily determine their point of intersection, but in this case I don't. The relationship between the matrices is non-linear, hence that avenue has been closed.

Any thoughts on the code to use? As an aside, does Excel allow determination of the point of intersection for curves defined by matrices?

Thoughts and assistance greatly appreciated!
Ron.
 
The matrices are actually 1 x n, hence row vectors are a more accurate description. The system characteristic - Head vector [15 16 19 24 25], Flow vector [0 0.05 0.1 0.15 0.2]. The pump characteristic - Head vector [25 24 20 14 7], flow vector [0 0.05 0.1 0.15 0.2]. The curves that I have produced illustrate head added to the liquid plotted against flow rate.

Ron.
 
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