18 μm
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54 μm
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7 μm
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νm
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1
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Click Add.
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4
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Click Add.
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In the Select Physics tree, select Acoustics>Thermoviscous Acoustics>Thermoviscous Acoustics, Frequency Domain (ta).
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7
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Click Add.
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8
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9
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Click Add.
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10
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11
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In the Displacement field components table, enter the following settings:
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12
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Click
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13
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In the Select Study tree, select Preset Studies for Selected Physics Interfaces>Membrane>Frequency Domain, Prestressed.
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14
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Click
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1
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4
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Browse to the model’s Application Libraries folder and double-click the file condenser_microphone_parameters.txt.
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Browse to the model’s Application Libraries folder and double-click the file condenser_microphone_variables.txt.
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1
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In the tree, select Built-in>Air.
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4
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1
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In the Model Builder window, under Component 1 (comp1) right-click Electrostatics (es) and choose the boundary condition Terminal.
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1
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In the Physics toolbar, click
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2
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In the Settings window for Thermoviscous Acoustic-Structure Boundary, locate the Boundary Selection section.
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3
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1
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2
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1
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In the Model Builder window, under Component 1 (comp1)>Membrane (mbrn) click Thickness and Offset 1.
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1
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Click in the Graphics window and then press Ctrl+A to select both domains.
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5
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Locate the Expressions section. In the table, enter the following settings:
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6
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7
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Click
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1
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Go to the Table window.
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1
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2
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1
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2
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In the Settings window for Surface, click Replace Expression in the upper-right corner of the Expression section. From the menu, choose Component 1 (comp1)>Thermoviscous Acoustics, Frequency Domain>Acceleration and velocity>ta.v_inst - Instantaneous total acoustic velocity - m/s.
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3
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1
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Click
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5
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1
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1
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Select the y-axis label check box. In the associated text field, type log<sub>10</sub>(|um<sub>av</sub>| (m/s)).
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6
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1
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1
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2
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In the Settings window for 1D Plot Group, type Average Membrane Deformation in the Label text field.
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3
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Select the y-axis label check box. In the associated text field, type log<sub>10</sub>(|U<sub>av</sub>| (m)).
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6
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1
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1
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1
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In the Settings window for Surface, click Replace Expression in the upper-right corner of the Expression section. From the menu, choose Component 1 (comp1)>Membrane>Displacement>mbrn.disp - Displacement magnitude - m.
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1
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2
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In the Settings window for Deformation, click Replace Expression in the upper-right corner of the Expression section. From the menu, choose Component 1 (comp1)>Membrane>Displacement>um,vm,wm - Displacement field.
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3
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