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

  • 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
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.

Published
2021-03-02
How to Cite
Hanchinal, A., N. Patil, R., & V. Katti, V. (2021). Study of Wall Static Pressure Distribution on Flat Surface by Impinging Submerged Jet from Non-circular Orifice. International Journal of Automotive and Mechanical Engineering, 18(1), 8423 -. https://doi.org/10.15282/ijame.18.1.2021.02.0637
Section
Articles