Steady and Unsteady Flow in Straight Rectangular Ducts

Abstract

A new solution for steady parallel flow in a rectangular duct is given that is valid for any aspect ratio a/b (where a and b are orthogonal half-widths of the duct), in contrast to older formulas that are restricted to certain ranges of a/b. New solutions for oscillatory flow in rectangular ducts are also given that replace a set of invalid published solutions. They provide calibration constants for relating local and average values of the unsteady velocity flow measurements in any rectangular channel.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1975
Accession Number
ADA011829

Entities

People

  • V. O'brien

Organizations

  • Johns Hopkins University

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aspect Ratio
  • Boundaries
  • Boundary Layer
  • Differential Equations
  • Equations
  • Flow
  • Geometry
  • Hydrodynamics
  • Laminar Flow
  • Linear Differential Equations
  • Measurement
  • New York
  • Physics Laboratories
  • Pressure Gradients
  • Steady Flow
  • Unsteady Flow
  • Viscous Flow

Fields of Study

  • Mathematics

Readers

  • Calculus or Mathematical Analysis
  • Combustion and Flow Dynamics.