The effect of fluid loading on radiation efficiency.
The metric "radiation efficiency," used to estimate a panel's radiated acoustic power from a measure of its normal velocity, is typically derived under the condition of very light fluid loading. This paper shows that efficiencies calculated in this manner can significantly overestimate the radiated power when the condition of light fluid loading is not met, as can be the case for steel plates in water. It is also shown that, when fluid loading is not light, a baffled semi-infinite plate is not a good model for an interior support. Numerical results are presented for radiation efficiencies calculated for steel plates in water, and are compared to those calculated under the assumption of vanishing fluid loading.
Rumerman
M L
ML
Naval Surface Warfare Center Carderock Division, Signatures Directorate, West Bethesda, Maryland 20817-5700, USA.
D000162:Acoustics; D008962:Models, Theoretical; D011827:Radiation; D014867:Water
D014867:Water