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Experimental investigation of mean flow characteristics of slot jet impingement on a cylinder

Experimentelle Untersuchung über die Strömungseigenschaften eines Düsenstrahls, der auf einen Zylinder aufprallt

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Abstract

An experimental investigation is made to study the flow characteristics of slot jet impingement on a cylinder. The velocity profiles and pressure distribution around the cylinder are reported for various parameters namely, the flow rate, width of the nozzle, distance of the cylinder from the jet exit and eccentricity of the cylinder to the jet axis.

Zusammenfassung

Es wurde eine experimentelle Untersuchung gemacht, um die Strömungseigenschaften eines Düsenstrahls zu unterschen, der auf einen Zylinder prallt. Die Geschwindigkeitsprofile und die Druckverteilungen an dem Zylinder wurden für unterschiedliche Parameter dokumentiert. Die Parameter sind die Strömungsgeschwindigkeit, Düsengröße, Abstand zwischen Zylinder und Strahlaustritt und die Exzentrizität von Zylinder und Strahlachse.

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Abbreviations

B :

breadth of the nozzle at the exit

D :

diameter of the cylinder

C p :

pressure coefficient

g :

acceleration due to gravity

L :

distance of the cylinder from jet exit

P a :

atmospheric pressure

P c :

static pressure along the jet center-line

P 0 :

stagnation pressure

P W :

wall static pressure

Re D :

Reynolds numberu j D/ν a

Re W :

Reynolds numberu j W/ν a

r :

distance measured from cylinder surface in radial direction

r m :

position of maximum velocity from cylinder surface

r 0.5 :

half width of the jet

u :

mean velocity

u j :

mean velocity at the jet exit

u m :

maximum velocity

W :

width of the nozzle

ϱ a :

density of air

ϱ m :

density of mercury

ϱ w :

density of water

μ :

absolute viscosity

ν :

kinematic viscosity

References

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  3. Igarashi, T.; Iida, Y.: Fluid flow and heat transfer around a circular cylinder with vortex generators.JSME Int. J. Series 11, 31 (1988) 701–708

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Authors and Affiliations

  1. Mechanical Engineering Department, Indian Institute of Technology, 721302, Kharagpur, India

    R. K. Brahma & R. C. Arora

  2. Bangladesh Institute of Technology, Chittagong, Bangladesh

    O. Faruque

Authors
  1. R. K. Brahma
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  2. O. Faruque
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  3. R. C. Arora
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Brahma, R.K., Faruque, O. & Arora, R.C. Experimental investigation of mean flow characteristics of slot jet impingement on a cylinder. Wärme- und Stoffübertragung 26, 257–263 (1991). https://doi.org/10.1007/BF01589996

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  • DOI: https://doi.org/10.1007/BF01589996

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