A Heat Transfer Analysis for Rough Turbine Airfoils

Abstract

In this research program, a methodology has been developed to calculate the increased heat transfer to turbine airfoils with surface roughness. The new model is adaptable to methods of finite-difference calculation, as opposed to correlation relations currently in use. The model utilizes an amplification factor for the thermal mixing length which is dependent on the local roughness height and surface shear stress. Keywords: Turbine blades, Vanes, Surface roughness, Turbulent boundary layer, Heat transfer, Augmentation.

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Document Details

Document Type
Technical Report
Publication Date
Jan 16, 1990
Accession Number
ADA221942

Entities

People

  • Lit. S. Han
  • Majid Delpassand

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Boundary Layer
  • Boundary Layer Flow
  • Classification
  • Engineering
  • Experimental Data
  • Fluid Mechanics
  • Gas Turbines
  • Heat Transfer
  • Measurement
  • Mechanical Engineering
  • Prandtl Number
  • Reynolds Number
  • Surface Roughness
  • Test Facilities
  • Turbine Components
  • Turbines

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Computational Modeling and Simulation
  • Fluid Dynamics.