+44 (0)1509 263171
Please use this identifier to cite or link to this item:
|Title: ||Numerical predictions of turbulent underexpanded sonic jets using a pressure-based methodology|
|Authors: ||Birkby, Paul|
Page, Gary J.
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/|
|Appears in Collections:||Published Articles (Aeronautical and Automotive Engineering)|
Files associated with this item:
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.