Different experimental techniques have been used in order to describe the flow pattern generated by fifteen jets impinging on a plane wall. The spreading over method revealed the jet influence on the impinged surface, particularly reattachment and detachment lines. The laser sheet visualizations show complex vortical structures such as the ground vortex and secondary rolling-ups near the target plate have been deduced. Velocity measurements have been realised to confirm these observations and to specify the flow pattern. A schema of the flow near the impinged wall is thus drawn.
Issue Section:
Research Papers
1.
Barata
J. M. M.
1991
, “Fountain Flows Produced by Multiple Impingement on a Ground Plane
,” Journal of Aircraft
, Vol. 30
, No. 1
, pp. 50
–56
.2.
Barata
J. M. M.
Durao
D. F. G.
Heitor
M. V.
McGuirk
J. J.
1992
, “The Turbulence Characteristics of the Single Impinging Jet Through a Crossflow
,” Experimental Thermal and Fluid Science
, Vol. 5
, pp. 487
–498
.3.
Barata
J. M. M.
Durao
D. F. G.
Heitor
M. V.
McGuirk
J. J.
1993
, “On the Analysis for Impinging Jet on Ground Effects
,” Experiments in Fluids
, Vol. 15
, pp. 117
–129
.4.
Bernard, A., 1997, “Ae´rodynamique de configurations de jets impactants applique´es au refroidissement de parois,” Ph.D. thesis, Poitiers.
5.
Bernard, A., and Bousgarbie`s, J. L., 1996, “Velocity Field Characteristics of Multiple Jets Impinging on a Flat Plate,” Proceedings, 8th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon.
6.
Blake, W. B., and Stewart, V. R., 1993, “Experiments on the Ground Vortex Formed by an Impinging Jet in Crossflow,” Proceedings, AGARD Meeting Computational and Experimental Assessment of Jets in Crossflow, paper 15.
7.
Brizzi, L.-E., Foucault, E., and Bousgarbie`s, J. L., 1995, “On the Vortical Structures Generated at the Boundary of a Circular Jet Emerging Normally Into a Boundary Layer,” Compte Rendu a` l’Acade´mie des Sciences Paris, t. 321, Se´rie IIb, pp. 217–223.
8.
Fric
T. F.
Roshko
A.
1989
, “Measurements of the Flow and Turbulence Characteristics of Round Jets in Crossflow
,” ASME JOURNAL OF FLUIDS ENGINEERING
, Vol. 111
, pp. 165
–170
.9.
Knowles
K.
Bray
D.
1993
, “Ground Vortex Formed by Impinging Jets in Crossflow
,” Journal of Aircraft
, Vol. 30
, No. 6
, pp. 50
–56
.10.
Liguo Li, Zingzhou Zhang, and Yun Zhu, 1990, “Thermal Visualisation of Heat Transfer Characteristics for Jet Array Impingement with Initial Crossflow,” Proceedings, 9th International Heat Transfer Conference, Jerusalem.
11.
Van Treuren, K. W., Wang, Z., Ireland, P. T., Jones, T. V., and Kohler, S. T., 1993, “Application of the Transient Liquid Crystal Technique to Measure Heat Transfer and Adiabatic Wall Temperature Beneath an Array of Impinging Jets,” Proceedings, Eurotherm Heat Transfer in Single-Phase Flow, Oxford.
12.
Werle´, H., 1977, “Ecoulement le long d’une paroi plane comportant des jets normaux ou incline´s de section circulaire,” Rapport technique ONERA n°65/7106 ENA.
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