Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-25T06:15:21.242Z Has data issue: false hasContentIssue false

Jet inflow simulation and its downwash effect on lifting surfaces

Published online by Cambridge University Press:  04 July 2016

P. A. O. Soviero
Affiliation:
Instituto Tecnológico de Aeronáutics, São José dos Campos, Brasil
J. B. V. Wanderley
Affiliation:
Instituto Tecnológico de Aeronáutics, São José dos Campos, Brasil

Summary

A turbulent hot jet is calculated and its entrainment effect is modelled by a line sink with the objective of estimating the downwash effect on rectangular lifting surfaces of various aspect ratios. The line sink density is determined by numerical solution of the free shear layer equations with a turbulent kinetic energy model. The ‘incompressible equivalent jet’ concept is verified within the context of practical engineering calculations.

Type
Research Article
Copyright
Copyright © Royal Aeronautical Society 1991 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Squire, H. B. Jet flow and its effects on aircraft, Aircraft Eng, March 1950, pp 6267.Google Scholar
2. Squire, H. B. and Trouncer, J. Round Jets in a General Stream. ARC R&M 1974, Jan 1944.Google Scholar
3. Geissler, W. and Wulf, R. Jet Simulation and Jet Interference Effects on Tailplane. AGARD-CP-7-71 on Aerodynamic Interference, 1971, paper 21.Google Scholar
4. Middleton, D. The generalisation of a double integral method with applications to jets in unbounded co-flows, Aeronaut Q, Feb 1979, 30, pp 322342.Google Scholar
5. Pai, S. I. Fluid Dynamics of Jets, van Nostrand Company, 1957.Google Scholar
6. Corrsin, A. and Uberoi, M. S. Further Experiments on the Flow and Heat Transfer in a Heated Turbulent Air Jet. NACA Report 998, 1950.Google Scholar
7. Rubesin, M. W. A One-Equation Model of Turbulence for Use With the Compressible Navier-Stokes Equations. NASA TM X-73-128, 1976.Google Scholar
8. Anderson, D. A., Tannehill, J. C. and Pletcher, R. H. Computational Fluid Mechanics and Heat Transfer, Hemisphere Publishing Corporation, 1984.Google Scholar
9. Launder, B. E., Morse, A., Rodi, W. and Spalding, D. B. Prediction of Free Shear Flows – A Comparison of the Performance of Six Turbulence Models. NASA SP-321, 1972, pp 361422.Google Scholar
10. Morris, P. J. Turbulence Measurements in Subsonic and Supersonic Axisymmetric Jets in a Parallel Stream. AIAA J, Oct 1976, 14, pp 14681474.Google Scholar