Study of Wall Static Pressure Distribution on Flat Surface by Impinging Submerged Jet from Non-circular Orifice

Authors

  • A. M. Hanchinal Department of Mechanical Engineering, Jain CET, Hubballi, India-580031 Phone: +91-9740169907
  • R. N. Patil Department of Mechanical Engineering, KLS VDIT, Haliyal, India-581329
  • V. V. Katti Department of Mechanical Engineering, KLS VDIT, Haliyal, India-581329

DOI:

https://doi.org/10.15282/ijame.18.1.2021.02.0637

Keywords:

Jet impingement; Hexagonal orifice; Wall static pressure; Rectangular test element; Confined flow

Abstract

The distribution of wall static and stagnation (CP and CPO) pressure coefficient on a flat rectangular element by impinging air jet from the hexagonal orifice is obtained from experimentation. The past research studies helped to identify key parameters such as orifice geometry, jet exit-to-plate-distance (Z/dj), test section inclination (θ), jet Reynold number (Re), lateral distance-to-jet diameter (X/dj), test surface type and geometry, for better and acceptable results. The experimental outcome helps to know the effect of identified key parameters on wall static and stagnation pressure on a rectangular test plate in a confined flow path. The independent nature of wall static pressure is observed for all jet Reynold number (10000 ≤ Re ≤ 50000). Higher pressure coefficient values were observed at lower Z/dj = 1, X/dj = 0 and θ = 0. A significant drop in CP values are seen with the increase in Z/dj, X/dj and θ. The experimental CP and CPO contribution of confined flow are compared against the unconfined flow, around 48% to 58% enhancement is observed when confinement is used. Experimental pressure drop measurements across orifice were made and pressure loss coefficient (PC) for hexagonal orifice of confined and unconfined condition are reported.

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Published

2021-03-02

How to Cite

[1]
A. M. Hanchinal, R. N. Patil, and V. V. Katti, “Study of Wall Static Pressure Distribution on Flat Surface by Impinging Submerged Jet from Non-circular Orifice”, Int. J. Automot. Mech. Eng., vol. 18, no. 1, pp. 8423 –, Mar. 2021.

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