Piston Heat-Transfer Coefficients Across an Oil Film in a Smooth-Walled Piston Reciprocating-Sleeve Apparatus

Abstract

Investigation was conducted on piston reciprocating-sleeve apparatus for a range of volumes of heat input, operating speed, side thrust, piston-clearance oil-supply rate, and average sleeve temperatures. Piston heat-transfer coefficient increased rapidly with increase in average oil-film temperature, speed, and also with an increase in supply of oil to piston clearance space. Heat transfer could be correlated as functions of Reynolds and Prandtl number based on average or maximum sleeve velocity, piston clearance, and physical properties of lubricating oil.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1945
Accession Number
ADB807286

Entities

People

  • Donald Bogart
  • Eugene J. Manganiello

Organizations

  • Glenn Research Center

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Coefficients
  • Conductivity
  • Cooling
  • Engines
  • Equations
  • Flow Rate
  • Friction
  • Heat Flux
  • Heat Transfer
  • Heat Transfer Coefficients
  • Heat Transmission
  • Lubricating Oils
  • Physical Properties
  • Prandtl Number
  • Specific Heat
  • Thermal Conductivity

Fields of Study

  • Engineering

Readers

  • Fluid Dynamics.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).

Technology Areas

  • Space
  • Space - Hall-Effect Thruster
  • Space - Orbital Debris