An Approximate Method for Calculating the Mean Streamlines of the Direct Problem of an Open Rotor.

Abstract

As part of a program to analyze secondary flows in a rotor, an approximate method was utilized to obtain the mean streamlines through the rotor. The mean streamlines were calculated by means of an iterative procedure which simultaneously satisfies the principles of conservation of energy, momentum and continuity for incompressible flow. The procedure used to calculate the flow mean streamlines is a version of the streamline curvature method. For the direct method, it is necessary to determine the outlet flow angles for the rotor blade sections. This angle is a combination of the metal blade angle and a deviation angle. An approximate method for calculating this deviation angle is described which is based on available experimental data. A good correlation between predicted data and experimental measurements has been obtained using this direct analysis method for the mean streamlines. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 11, 1978
Accession Number
ADA057151

Entities

People

  • Michael L. Billet

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Axial Flow
  • Boundary Layer
  • Computer Programs
  • Curvature
  • Equations
  • Experimental Data
  • Flow
  • Flow Fields
  • Fluid Dynamics
  • Fluid Mechanics
  • Geometry
  • Hydrodynamics
  • Measurement
  • Momentum
  • Pressure Gradients
  • Secondary Flow
  • Thickness

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)