Creating solid geometry with PDE

Hello there;

For thermal analysis, I need to create the solid model shown in the attached image with PDE. Coul you help me create the geometry with PDE?

Note: the circles are empty

Answer 1

[Yatharth]

Hi Sevgi,

For creating a solid model shown in the image you attached you can use Matlab 3-D shape and "subtract" function.

Note: It can only be done on MATLAB R2023B release

Here is an example for you:

% Define the start and end points
xStart = -13;
xEnd = 13;

% Number of cylinders to create
numCylinders = 5;

% Calculate the spacing between each cylinder
spacing = (xEnd - xStart) / (numCylinders - 1);

% Initialize an array to hold the Cylinder objects
cylinders = cell(1, numCylinders);

% Loop to create each Cylinder and set its center
for i = 1:numCylinders
    xCenter = xStart + (i-1) * spacing;
    cylinders{i} = shape.Cylinder("Radius", 1, "Height", 10, ...
                                  "Color", [0.9290, 0.6940, 0.1250], ...
                                  "Center", [xCenter, 0, 0]);
end

box = shape.Box("Height",10 ,"Length",30,"Color","r","Width",10);
show(box)

for i = 1:numCylinders
    box = subtract(box, cylinders{i});
end
show(box)

Now you can use this shape and apply other techniques such as triangulation, generate STL file.

Some of the resources that might help you.

1. "customAntenna" object lets you create an antenna from a custom shape. https://www.mathworks.com/help/antenna/ref/customantenna.html
2. "stlwrite" function writes the points and connectivity list of an antenna or array mesh to a STL file of specified name. https://www.mathworks.com/help/antenna/ref/stlwrite.html
3. "subtract" function for Boolean subtraction operation on two shapes https://www.mathworks.com/help/antenna/ref/subtract.html

I hope this helps!