UTILIZATION OF THE THEORY OF SIMILITUDE IN THE ANALYSIS OF OIL FLOW IN THE PASSAGES OF GAS TURBINE ENGINE BEARINGS,

Abstract

The need for a theoretical study based upon the theory of similitude arose in connection with the requirement for a generalization of experimental research data accumulated on gas turbine engine ('GTD') bearings. These are lubricated and cooled by a forced-through flow of oil. The conditions of hydrodynamic similitude of the oil flow in the passages of geometrically similar bearings are studied. Because of the non-isothermic nature of the oil flow, its hydrodynamics are governed by all four equations defining, in a general case, the forced stationary flow of the viscous, imcompressible fluid. These are the equations of continuity, conservation of momentum, conservation of energy, and of state. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 18, 1968
Accession Number
AD0682832

Entities

People

  • V. M. Demidovich

Organizations

  • National Air and Space Intelligence Center

Tags

DTIC Thesaurus Topics

  • Continuity
  • Energy Generators
  • Energy Systems
  • Engines
  • Equations
  • Gas Turbines
  • Generators
  • Hydrodynamics
  • Mechanical Equipment
  • Momentum
  • Stationary
  • Turbine Components
  • Turbines
  • Turbomachinery

Readers

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