Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-05T15:33:16.572Z Has data issue: false hasContentIssue false
  • English
  • Français

Three-Dimensional Wall Jet Originating from a Circular Orifice

Published online by Cambridge University Press:  07 June 2016

B G Newman ,
R P Patel ,
S B Savage  and
H K Tjio
B G Newman
Affiliation:
McGill University, Montreal
R P Patel
Affiliation:
McGill University, Montreal
S B Savage
Affiliation:
McGill University, Montreal
H K Tjio
Affiliation:
McGill University, Montreal
Get access

Summary

An incompressible three-dimensional turbulent wall jet originating from a circular orifice located adjacent to a plane wall is studied both theoretically and experimentally. An approximate similarity analysis predicts that the two transverse length scales, l0 and L0, and the inverse of the mean velocity scale grow linearly with distance downstream x from the orifice. Experimental measurements of mean velocity and longitudinal turbulence intensity profiles were made both in air and water with hot-wire and hot-film anemometers respectively. The behaviour predicted by the similarity analysis was verified. It was found that the rate of growth of the length scale normal to the plane wall, dl0/dx, was somewhat less than that found for a two-dimensional wall jet, whereas the rate of growth of the length scale in the lateral direction, dL0/dx, was about seven times greater than dl0/dx.

Type
Research Article
Information
Aeronautical Quarterly , Volume 23 , Issue 3 , August 1972 , pp. 188 - 200
Copyright
Copyright © Royal Aeronautical Society. 1972

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. Bradshaw, P Gee, M T Turbulent wall jets with and without an external stream. ARC R & M 3252, 1962.Google Scholar
2. Schwarz, W H Cosart, W P The two-dimensional turbulent wall jet. Journal of Fluid Mechanics, Vol 10, Part 4, 1961.CrossRefGoogle Scholar
3. Patel, R P Self-preserving, two-dimensional turbulent jets and wall jets in a moving stream. MEng Thesis, Mechanical Engineering Department, McGill University, 1962.Google Scholar
4. Kruka, V Eskinazi, S The wall jet in a moving stream. Journal of Fluid Mechanics, Vol 27, pp 381-397, 1964.Google Scholar
5. Guitton, D E Correction of hot-wire data for high intensity turbulence, longitudinal cooling and probe interference. Mechanical Engineering Research Laboratory, Report 68-6, McGill University, 1968.Google Scholar
6. Bradshaw, P Love, E M The normal impingement of a circular air jet on a flat surface. ARC R & M 3205, 1961.Google Scholar
7. Fekete, G I Coanda flow of a two-dimensional wall jet on the outside of a circular cylinder. Mechanical Engineering Research Laboratory, Report 63-11, McGill University, 1963.Google Scholar
8. Guitton, D E Some contributions to the study of equilibrium and non-equilibrium turbulent wall jets over curved surfaces. PhD thesis, Mechanical Engineering Research Laboratory, McGill University, 1970.Google Scholar
9. Starr, J B Sparrow, E M Experiments on a turbulent cylindrical wall jet. Journal of Fluid Mechanics, Vol 29, Part 3, 1967.CrossRefGoogle Scholar
10. Sforza, P Herbst, G A study of three-dimensional incompressible turbulent wall jets. AIAA Journal, Vol 8, pp 276-283, February 1969.Google Scholar
11. Curtis, E S Pai, S I Weske, J R Some experimental studies on wall jets. Proceedings of the Fifth US Congress of Applied Mechanics, p 749, American Society of Mechanical Engineers, New York, 1966.Google Scholar
12. Hayashi, T Shuto, N Diffusion of warm water jets discharged horizontally at the water surface. Proceedings of 12th Congress of International Association of Hydraulic Research, Vol 4, pp 47-59, Colorado State University, Fort Collins, 1967.Google Scholar
13. Tamai, N Weigel, R L Tomberg, G F Horizontal surface discharge of warm water jets. Journal of the Power Division, Proceedings of the American Society of Civil Engineers, Vol 95, No PD2, pp 253-275, October 1969.Google Scholar
14. Knystautas, R, The turbulent jet from a series of holes in line. Aeronautical Quarterly, Vol XV, p 1, February 1964.CrossRefGoogle Scholar
15. Townsend, A A The Structure of Turbulent Shear Flow. Cambridge Monographs on Mechanics and Applied Mathematics, Cambridge University Press, 1956.Google Scholar
16. Patel, R P Reynolds stresses in fully developed turbulent flow down a circular pipe. Mechanical Engineering Research Laboratory, Report 68-7, McGill University, 1968.Google Scholar