Far-field pressure from submerged finite cylindrical shell using structural sensors

On the basis of the cylindrical shell equation of motion and the Kirchhoff-Helmholtz integral equation, the estimation of the far-field pressure radiated from the baffled finite cylindrical shell using structural sensors in different fluid is constructed, and the number of required structural sensors for accurately estimating far-field pressure in air and water are compared. The results show that due to the fluid-structure coupling effect introduced by water, the number of structural sensor along the axial direction in water should be greater than the modal index of the mode found in the structural response, similar to that in air; the number of structural sensor along the circumferential direction in water only should be greater than twice the dominant structure modes, but in air, it should be greater than twice the structure modes presented in the frequency of interest.