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Document ID (ISN)56874
CIS number 91-1991
ISBN(s) 0-85-356343-8
Year 1990
Convention or series no. SRD/HSE/R 444
Author(s) Brighton P.W.M.
Safety and Reliability Directorate
Title Similarity solutions for two-dimensional steady gravity currents
Bibliographic information United Kingdom Atomic Energy Authority, Wigshaw Lane, Culcheth, Warrington WA3 4NE, United Kingdom, 1990. 42p. Illus. 12 ref. Price: GBP 6.00.
Abstract When a heavy gas is emitted at ground level, buoyancy forces tend to make it spread sideways and upwind while at the same time the wind tries to transport it in the opposite direction. The purpose of this paper is to present some solutions to equations describing this complex interaction in two dimensions. Similarity solutions have been found for steady two-dimensional laminar flow in which dense fluid is emitted upwards from a horizontal plane into a laminar flow or into a uniform flow. The solutions also apply to a light fluid released at an upper horizontal surface and the method can be extended to certain turbulent flows.
Descriptors (primary) gas emission; gases; fluid mechanics; disasters; major hazards
Descriptors (secondary) United Kingdom; mathematical models; hazard evaluation; velocity of flow
Document type E - Books, reports, proceedings
Country / State or ProvinceUnited Kingdom
Subject(s) Fire and explosions
Broad subject area(s) Fires, explosions and major hazards
Browse category(ies) Major hazards
Natural phenomena