Characterization of flow through porous metals

Michael J. Hargather, Karen Ann Thole

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Porous metals have long been considered as an ideal material in which to manufacture turbine components given the inherent large convective surface area. One consideration, however, in using porous metals is the increase in pressure drop that accompanies these materials. To characterize increases in pressure drop for porous materials, flow measurements were made on numerous porous metal coupons. The porosity of the coupons investigated had a range of four in terms of density. A technique for determining the effective internal flow area from pressure drop measurements was developed to provide an effective diameter. The pressure drop measurements were compared to an ideal isentropic compressible-flow nozzle and to a smooth, straight-walled tube. The comparisons show that the porous channels have a similar, but much larger pressure drop than the smooth walls. The experiments performed demonstrated that these porous geometries can be scaled to provide generalized pressure drop characteristics for all geometries.

Original languageEnglish (US)
Title of host publicationASME Turbo Expo 2013
Subtitle of host publicationTurbine Technical Conference and Exposition, GT 2013
StatePublished - Dec 17 2013
EventASME Turbo Expo 2013: Turbine Technical Conference and Exposition, GT 2013 - San Antonio, Tx, United States
Duration: Jun 3 2013Jun 7 2013

Publication series

NameProceedings of the ASME Turbo Expo
Volume3 C


OtherASME Turbo Expo 2013: Turbine Technical Conference and Exposition, GT 2013
Country/TerritoryUnited States
CitySan Antonio, Tx

All Science Journal Classification (ASJC) codes

  • General Engineering


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