VERIFICATION OF A THEORETICAL METHOD OF DETERMINING DISCHARGE COEFFICIENTS FOR VENTURIS OPERATING AT CRITICAL FLOW CONDITIONS

Abstract

A venturi contour designed specifically for use at critical flow conditions is described, and a theoretical method is presented for determining the discharge coefficient of this venturi. An experimental investigation was conducted to determine the discharge coefficient of such a venturi, and the results are compared with the theoretical values. This investigation covered a range of Reynolds number from 0.4 x 10 to the 6th power to 5.4 x 10 to the 6th power based on venturi throat diameter. The venturi used had a throat diameter of 5.6436 in. and an airflow capacity of 8.6 lb/sec at an inlet total pressure of one atmosphere and an inlet total temperature of 519 R. The values of discharge coefficient ranged from 0.992 to 0.994, and the theoretically and experimentally determined coefficients agreed within + or - 0.06% over the range of conditions investigated.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1961
Accession Number
AD0263714

Entities

People

  • Ray J. Matz
  • Robert E. Smith Jr.

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Axisymmetric Flow
  • Boundary Layer
  • Boundary Layer Transition
  • Computational Fluid Dynamics
  • Diameters
  • Flow Rate
  • Fluid Dynamics
  • Fluid Flow
  • Geometry
  • Hydrodynamics
  • Measurement
  • Pressure Distribution
  • Pressure Gradients
  • Pressure Measurement
  • Reynolds Number
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.