Harnessing Sound for Health: A Conversation with Tim Colonius
When a person develops a kidney stone or a gall stone—hard accumulations of minerals and other compounds created by the body—they can experience a great deal of pain and discomfort. Lithotripsy is the practice of breaking gall or kidney stones into small pieces within the body using shockwaves produced by a machine called a lithotripter. A new form of lithotripsy has been under development with the help of Tim Colonius, Frank and Ora Lee Marble Professor of Mechanical Engineering. [Caltech story]
Modeling Jet Engine Noise
Tim Colonius, Professor of Mechanical Engineering, and his group have been building models to understand how jet engines generate noise and the Office of Naval Research recently awarded him funding to develop a better way to control the din. “Now we are getting a much more detailed picture of the actual mechanism by which the turbulence makes the sound,” Colonius says.