Hydraulic Analogy for Isentropic Flow Through a Nozzle

  • J. S. Rao Indian Institute of Technology, New Delhi
  • V.V.R. Rao Indian Institute of Technology, New Delhi
  • V. Seshadri Indian Institute of Technology, New Delhi
DOI: https://doi.org/10.14429/dsj.33.6156
Keywords: Nozzle, Hydraulic Analogy, Modelling Aspects

Abstract

Modelling aspects of isentropic compressible gas flow using hydraulic analogy are discussed. Subsonic and supersonic flows through a typical nozzle are simulated as free surface incompressible water flow in an equivalent 2-D model on a water table. The results are first compared for the well known classical analogy in order to estimate experimental errors. Correction factors for pressure and temperature, to account for non-ideal compressible gas flow are presented and the results obtained on the water table are modified and compared with gas dynamic solution. Within the experimental errors, it is shown that the hydraulic analogy can be used as an effective tool for the study of two dimensional isentropic flows of gases.

Author Biographies

J. S. Rao, Indian Institute of Technology, New Delhi
Department of Mechanical Engineering, Indian Institute of Technology, New Delhi-110 016
V.V.R. Rao, Indian Institute of Technology, New Delhi
Department of Mechanical Engineering, Indian Institute of Technology, New Delhi-110 016
V. Seshadri, Indian Institute of Technology, New Delhi
Department of Mechanical Engineering, Indian Institute of Technology, New Delhi-110 016
Published
2014-02-10
How to Cite
Rao, J., Rao, V., & Seshadri, V. (2014). Hydraulic Analogy for Isentropic Flow Through a Nozzle. Defence Science Journal, 33(2), 97-111. https://doi.org/10.14429/dsj.33.6156
Issue
Vol 33 No 2
Section
General Papers
Copyright (c) 2016 Defence Science Journal

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