Aerodynamics of Axisymmetric Counterflowing Jets

Carpio Huertas, Jaime ORCID:, Liñán Martínez, Amable ORCID:, Sánchez, Antonio L. and Williams, Forman A. (2017). Aerodynamics of Axisymmetric Counterflowing Jets. "Combustion and Flame", v. 177 ; pp. 137-143. ISSN 0010-2180.


Title: Aerodynamics of Axisymmetric Counterflowing Jets
Item Type: Article
Título de Revista/Publicación: Combustion and Flame
Date: March 2017
ISSN: 0010-2180
Volume: 177
Freetext Keywords: Counterflow combustor, Strain rate, Impinging jets
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Energética
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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The laminar flow resulting from impingement of two steadily fed low-Mach-number gaseous jets issu- ing into a stagnant atmosphere from coaxial cylindrical ducts at moderately large Reynolds numbers,often used in combustion experiments, is studied through numerical integrations of the Navier-Stokes equations. In the Reynolds-number range addressed, [50,1000], the flow of the approaching jets is nearlyinviscid, with viscous effects and mixing being restricted to the thin mixing layers surrounding the jetsand to a thin layer located at the separating stream surface. The analysis of the main inviscid flow showsthat only two parameters, based on the scales associated with the radius and the velocity profiles of thetwo feed streams, are needed to characterize the flow, namely, the ratio of the inter-jet separation dis- tance to the duct radius and the ratio of momentum fluxes of the jets. The numerical results for uniformand Poiseuille velocity profiles provide, in particular, the value of the strain rate at the stagnation pointfor use in the analysis of experimental studies of counterflow premixed and diffusion flames.

Funding Projects

Government of Spain
Government of Spain

More information

Item ID: 49803
DC Identifier:
OAI Identifier:
DOI: 10.1016/j.combustflame.2016.12.005
Official URL:
Deposited by: Memoria Investigacion
Deposited on: 19 Apr 2018 17:03
Last Modified: 01 Apr 2019 22:30
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