Dynamics and Acoustics Assignment Help

Advanced Structural Dynamics and Acoustics Assignment Help

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Question 1.

Solution Problem 1 Fourier transform of field at distance h

Backpropagate to radiator

where kz is the vertical wavenumber

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Question 2.

where kx0 = k/2 = θ/2c. Insert into eq. 1 and use EGW eqn. 1.5

Insert into Eq. (4)

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Solution Problem 2

with kx0 = θ/2c = k/2. Wavenumbers in rotated coordinate system

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Williams eq. 2.102 leads to

Directivity function using transformations in eq. (9)-(12),

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