Loughborough University
Leicestershire, UK
LE11 3TU
+44 (0)1509 263171
Loughborough University

Loughborough University Institutional Repository

Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/5052

Title: Numerical predictions of turbulent underexpanded sonic jets using a pressure-based methodology
Authors: Birkby, Paul
Page, Gary J.
Keywords: Jet
Underexpanded
Turbulent flow
Computational fluid dynamics (CFD)
Issue Date: 2001
Publisher: Professional Engineering Publishing / © IMECHE
Citation: BIRKBY, P. and PAGE, G.J., 2001. Numerical predictions of turbulent underexpanded sonic jets using a pressure-based methodology. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 215 (3), pp. 165-173
Abstract: The objective of this work is to model underexpanded turbulent sonic jets. A pressure-based computational fluid dynamics methodology has been employed, incorporating extensions to handle high speed flows. A standard two-equation turbulence model is used, with an optional compressibility correction. Comparison with experimental jet centre-line Mach number showed the correct shock cell wavelength but a too rapid decay. The compressibility correction had no effect on the shock cell decay but increased the potential core length to give better agreement with experiment. Calculations for nozzle pressure ratios up to 30 showed the variation of Mach disc location in good agreement with experiment. For nozzle pressure ratios above 6, unsteady solutions were observed, emanating from the intersection of the Mach disc with the shear layer. Experimental work has identified similar large-scale instabilities; the peak mode of the prediction had a Strouhal number of 0.16, close to experimental values.
Description: This is an article from the journal, Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering [Professional Engineering Publishing / © IMechE ]. It is also available at: http://www.pepublishing.com/acadpub/jaero/home/
Version: Published
DOI: 10.1243/0954410011533158
URI: https://dspace.lboro.ac.uk/2134/5052
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

Files associated with this item:

File Description SizeFormat
Numerical predictions of turbulent underexpanded.pdf308.39 kBAdobe PDFView/Open

 

SFX Query

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.