Prosperetti's Phi calculator

version (1.41 KB) by Chad Greene
Returns the Phi argument given by Prosperetti's, The thermal behaviour of oscillating gas bubbles.


Updated Wed, 01 Aug 2012 14:58:31 +0000

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Phi returns the Phi argument given by Prosperetti's article, The thermal behaviour of oscillating gas bubbles, JASA 1991.
Chad A. Greene, May 2012

INPUTS: (can be arrays)
gamma = ratio of specific heats (~1.4 for air)
Dg = thermal diffusivity of the gas (~1.9e-5 for air)
omega = angular frequency of bubble oscillation (rad/s)
ro = nominal radius of bubble

Good resources for gas properties are found here: and

Cite As

Chad Greene (2022). Prosperetti's Phi calculator (, MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2011a
Compatible with any release
Platform Compatibility
Windows macOS Linux
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