How to match initial index?

I am very close to getting the index in Python to match with Matlab.

Here is the output of Python...

0.06 0.058125 0.05625 0.054375 0.0525 0.050625 0.04875 0.046875 0.045 0.043125 0.04125 0.039375 0.0375 0.035625 0.03375 0.031875 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Here is some of the Matlab code...

% clears variables and windows

clc, clear all

% user defined variables

AoA = 10*pi/180;

Uinf = 8.8;

rho = 1.204;

chord = 0.12;

span = chord*2;

thickness = 0.006;

minRad = thickness/2;

majRad = chord/4;

numPanels = 128;

xp = zeros(numPanels, 1)

yp = zeros(numPanels, 1)

% panel coordinates for a finite thickness plate with elliptical leading % edge (nodes)

xStep = chord/(numPanels/2);

xp = chord/2; % 0.06

yp = 0;

k = 1;

while k < numPanels/8

   xp(k) = chord/2 - xStep*k

   yp(k) = -minRad/majRad*(majRad^2-(majRad-xStep*k)^2)^(1/2)

   k = k + 1;

end

Matlab output...

xp'

ans =

    0.0581
    0.0562
    0.0544
    0.0525
    0.0506
    0.0488
    0.0469
    0.0450
    0.0431
    0.0412
    0.0394
    0.0375
    0.0356
    0.0338

In Python the first value is 0.06, the value in Matlab is 0.058125. I need to hold numPanels = 128, don't want to change this to match indexing. In my Matlab code before the first while loop I have xp = chord/2 which is the 0.06, while yp = 0. When placing these outside the while loop will Matlab account those as the initial value at index 1?

Answer 1

[Birdman]

xp(1) = chord/2; % 0.06

yp(1) = 0;

You can make initial value assignments as above and then enter the while loop as you wrote.

[Zach Dunagan]

Okay thanks for your help._

[Zach Dunagan]

That doesn't work. Those initial values don't appear after it loops through...

Answer 2

[Birdman]

No it is not going to happen, after inside the while loop, the xp and yp variables will be overridden by newly defined xp and yp vectors.

[Zach Dunagan]

Okay... Have any suggestions?