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3-D Multidomain Geometry from 2-D Geometry

This example shows how to create a 3-D multidomain geometry by extruding a 2-D geometry imported from STL data. The original 2-D geometry represents a cooled turbine blade section defined by a 2-D profile.

Before extruding the geometry, this example modifies the original 2-D profile as follows:

  • Translates the geometry to move the tip to the origin

  • Aligns the chord with the x-axis

  • Changes the dimensions from inches to millimeters

First, create a PDE model.

model = createpde;

Import the geometry into the model.

g = importGeometry(model,'CooledBlade2D.STL');

Plot the geometry with the face labels.

figure
pdegplot(model,'FaceLabels','on')

Figure contains an axes object. The axes object contains an object of type line.

Translate the geometry to align the tip of the blade with the origin.

tip = [1.802091,-127.98192215];
translate(g,tip);

Rotate the geometry to align the chord with the x-axis.

angle = -36.26005;
rotate(g,angle);

Scale the geometry to convert from inches to millimeters.

scale(g,[25.4 -25.4]);

Plot the resulting geometry with the face labels.

figure
pdegplot(model,'FaceLabels','on')

Figure contains an axes object. The axes object contains an object of type line.

Fill the void regions with faces and plot the resulting geometry.

g = addFace(g,{3, 4, 5, 6, 7});

figure
pdegplot(model,'FaceLabels','on')

Figure contains an axes object. The axes object contains an object of type line.

Extrude the geometry to create a stacked multilayer 3-D model of the blade. The thickness of each layer is 200 mm.

g = extrude(g,[200 200 200]);

Plot the geometry with the cell labels.

figure
pdegplot(model,'CellLabels','on','FaceAlpha',0.5)

Figure contains an axes object. The axes object contains 3 objects of type quiver, patch, line.