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Open porosity
The open porosity, term commonly reduced to "porosity",
refers to the ratio of the fluid volume occupied by the continuous fluid
phase to the total volume of porous material.
The open porosity is usually identified by the greek letter
,
Schematic representation of an acoustical porous medium. The fluid phase, in white, is made up of a network of connected pores. The closed pores are considered to be a part of the solid phase, in black.
Range of values
For acoustical materials, its range of values is approximately [0.70 0.99].
The porosity can be directly measured. [Ber42]
References
[Ber42] Beranek L. L., Acoustic impedance of porous materials, J. Acoust. Soc. Am. 13, 1942, pp. 248-260
- Contents
- Definition
- Range of values
- See also
- "Porosity" measurement
- Comment
- by sending an e-mail to apmr@matelys.com with the current page title.
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