Simulations of starting gas jets at low mach numbers

Iglesias Estradé, Inmaculada and Vera Coello, Marcos and Sánchez Pérez, Antonio Luis and Liñán Martínez, Amable (2005). Simulations of starting gas jets at low mach numbers. "Physics of Fluids", v. 17 (n. 3); pp. 1-4. ISSN 1070-6631.

Description

Title: Simulations of starting gas jets at low mach numbers
Author/s:
  • Iglesias Estradé, Inmaculada
  • Vera Coello, Marcos
  • Sánchez Pérez, Antonio Luis
  • Liñán Martínez, Amable
Item Type: Article
Título de Revista/Publicación: Physics of Fluids
Date: March 2005
ISSN: 1070-6631
Volume: 17
Subjects:
Freetext Keywords: confined flow; flow simulation; jets; Mach number; Navier Stokes equations; orifices mechanical; starting gas jets; low Mach numbers; submerged gas stream; circular orifice; plane wall; Reynolds number; baroclinic torque;
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Motopropulsión y Termofluidodinámica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The starting jet produced by the impulsively started discharge of a submerged gas stream of constant velocity through a circular orifice in a plane wall is investigated by integrating numerically the axisymmetric Navier-Stokes equations for moderately large values of the jet Reynolds number. The analysis is restricted to low-Mach-number jets, for which the jet-to-ambient temperature ratio gamma=T/sub j//T/sub o/ emerges as the most relevant parameter. It is seen that the leading vortex approaches a quasisteady structure propagating at an almost constant velocity, which is larger for smaller values of gamma. The action of the baroclinic torque in regions of nonuniform temperature leads to significant vorticity production, with a constant overall rate equal to that of an inviscid starting jet

More information

Item ID: 874
DC Identifier: http://oa.upm.es/874/
OAI Identifier: oai:oa.upm.es:874
Official URL: http://scitation.aip.org/dbt/dbt.jsp?KEY=PHFLE6
Deposited by: Archivo Digital UPM
Deposited on: 22 Feb 2008
Last Modified: 20 Apr 2016 06:34
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