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Assessment of Turbulence Models for Predicting Coaxial Jets relevant to Turbofan Engines
KTH, School of Engineering Sciences (SCI), Mechanics, Fluid Mechanics of Industrial Processes. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.ORCID iD: 0000-0001-7330-6965
KTH, School of Engineering Sciences (SCI), Mechanics. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW. (KTH - Mechanics)ORCID iD: 0000-0001-7715-863X
KTH, School of Engineering Sciences (SCI), Mechanics, Fluid Mechanics of Industrial Processes. KTH, School of Engineering Sciences (SCI), Centres, Linné Flow Center, FLOW.
University of Cincinnati.
2012 (English)In: Conference on Modelling Fluid Flow (CMFF'12) / [ed] Janos Vad, 2012, 716-723 p.Conference paper, Published paper (Refereed)
Abstract [en]

A numerical study is carried out for analyzing the compressible, non-isothermal flow associated with a separate-flow exhaust nozzle system with conic plug. Within the steady-state Reynolds Averaged Navier-Stokes (RANS) framework, several two-equation turbulence models among which the standard k-epsilon, the standard k-omega, and two different Shear Stress Transport (SST) k-omega formulations are evaluated. In addition, Large Eddy Simulation (LES) approach is employed for capturing the flow dynamics associated with the coaxial jet. The computational results are compared against available experimental Particle Imaging Velocimetry (PIV) flow data, in terms of time-averaged axial velocity and turbulent kinetic energy levels.

Place, publisher, year, edition, pages
2012. 716-723 p.
Keyword [en]
Coaxial jet nozzle, LES, RANS, validation
National Category
Aerospace Engineering
Research subject
Aerospace Engineering
Identifiers
URN: urn:nbn:se:kth:diva-149567OAI: oai:DiVA.org:kth-149567DiVA: diva2:740276
Conference
Conference on Modelling Fluid Flow (CMFF'12),Conference on Modelling Fluid Flow (CMFF’12),The 15th International Conference on Fluid Flow Technologies,Budapest, Hungary, September 4-7, 2012
Note

QC 20140825

Available from: 2014-08-24 Created: 2014-08-24 Last updated: 2015-03-05Bibliographically approved

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Mihaescu, MihaiSemlitsch, Bernhard

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