CALIBRATION OF THREE VENTURI AIRFLOW METERING SYSTEMS WITH STING-MOUNTED CENTERBODIES AT CRITICAL AND SUBCRITICAL FLOW CONDITIONS

Abstract

An experimental investigation was conducted to determine the discharge coefficient of a venturi airflow meter with various diameter centerbodies installed. A critical flow venturi for which a theoretical discharge coefficient had been experimentally verified was used as the calibration standard. The discharge coefficients for the test venturi without centerbody and with centerbodies of two different diameters were determined over a range of venturi throat Reynolds numbers from 320,000 to 3,200,000 at a constant inlet air total temperature of 70F. The experimentally determined coefficients were in good agreement with the theoretical value for all configurations tested. Maximum deviation (0.3 percent) of discharge coefficient from the theoretical value occurred with the venturi without centerbody operating at critical flow conditions.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1966
Accession Number
AD0632085

Entities

People

  • H. E. Wolff

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Boundaries
  • Boundary Layer
  • Calibration
  • Classification
  • Contracts
  • Diameters
  • Engineering
  • Flow Rate
  • Instrumentation
  • Mach Number
  • Measurement
  • Propulsion Systems
  • Reynolds Number
  • Standards
  • Static Pressure
  • Test Facilities

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.