From Wood to Carey to Mallock: A review of Bill Carey's work associated with the Mallock-Wood equation and the acoustics of bubbly liquids and gas-bearing sediments

One of Bill Carey's many scientific interests throughout his career was the acoustics of bubbly liquids. Many underwater acousticians know of Carey's work associated with bubble clouds and more recently, gas-bearing sediments, but Bill got his start with the subject earlier in his career, studying flow in a boiling water reactor while employed at Argonne National Laboratory. Here, the acoustic velocity of bubbly liquid is of interest because of the possibility of supersonic flow, at comparatively low flow rates, in the high-void-fraction mixture within the reactor's piping system. In this talk, an overview of Bill's work with the acoustics of bubbly liquids will be presented, including scattering from bubble clouds, and sound propagation within bubbly liquid and gas-bearing sediments. Finally, Bill's campaign to rename a famous equation (Wood's Equation) in honor of its forgotten originator (Mallock) will be reviewed. [Work supported by ONR.]