Tensile stress in a porous mediumdue to gas expansion

Nieck E. Benes, P. Maarten Biesheuvel, Henk Verweij

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)

Abstract

Stress profiles develop in a porous material due to a gas-phase pressure difference and subsequent gas flow. If stresses become tensile, material failure (explosion and blistering) can occur. Stress profiles are calculated for an asymmetric inorganic porous disk-like membrane material placed in a pressure vessel, which is depressurized. The stress that develops in the membrane material depends on the gas-phase pressure and the porosity. The gas-phase pressure is a function of place, time and characteristics of the membrane, the vessel and the valve. Two regimes are identified for membrane depressurization, and a critical initial pressure is defined below which tensile stresses cannot develop. The theory presented combines the dusty gas model with balances for mass, momentum, and mechanical energy.
Original languageEnglish
Pages (from-to)1322-1328
Number of pages7
JournalAIChE journal
Volume45
Issue number6
DOIs
Publication statusPublished - 1999

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