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Supercritical Mixing of Flows with High Density Gradient

Huhn, C. and Koschel, W. (2003) Supercritical Mixing of Flows with High Density Gradient. In: Numerical Flow Simulation III Notes on Numerical Fluid Mechanics and Multidisciplinary Design, Volume 82. Springer, Berlin. ISBN 3-540-44130-1.

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To analyze the supercritical mixing behavior of a two-phase flow a coaxial flow of two gases with variable density gradient is investigated. The main item is the comparison of the core length development by varying the density ratio of the inner heavy gas jet to the annular light gas jet from 30 to 45. Thereby the velocity ratio between the slow heavy jet and the low density high speed flow is kept constant. The numerical simulation is carried out with a 2D Navier Stokes solver for compressible multi-species flows on an unstructured triangular grid. The mixing process, which is mainly determined by turbulent structures in the flow field is described with a k - e model. The transport equations are integrated in time with a fifth order Runge-Kutta algorithm.

Document Type:Contribution to a Collection
Additional Information: LIDO-Berichtsjahr=2003,
Title:Supercritical Mixing of Flows with High Density Gradient
AuthorsInstitution or Email of Authors
Huhn, C.RWTH
Journal or Publication Title:Numerical Flow Simulation III
Refereed publication:Yes
In ISI Web of Science:No
Volume:Volume 82
Publisher:Springer, Berlin
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):E -- no assignement
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 14:02

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