CRYPTO-STEADY PRESSURE EXCHANGE

Abstract

CRYPTO-STEADY PRESSURE EXCHANGE IS A MODE OF DIRECT ENERGY TRANSFER BETWEEN FLOWS, BASED ON THE PRINCIPLE THAT TWO ADJACENT STREAMS WHICH ARE BOTH ISOENERGETIC IN THE SAME FRAME OF REFERENCE WILL, IN GENERAL, EXCHANGE MECHANICAL ENERGY IN ANY OTHER FRAME. The efficiency of this process is potentially high, because a change of frame of reference is reversible, and the associated transfer of energy is therefore nondissipative. An application of this principle to thrust or lift generation is discussed for the purpose of illustration. In this application the interacting flows are steady and isoenergetic in a rotating frame of reference but exchange energy in a stationary frame. The exchange mechanism is essentially similar to that of a turbofan, but the blades are now pattern rather than bodies of abiding materials. Performance calculations are carried out for the case of interactions taking place within short ducts of constant cross-sectional area. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1962
Accession Number
AD0274780

Entities

People

  • J.v. Foa

Organizations

  • Rensselaer Polytechnic Institute

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Demographic Cohorts
  • Efficiency
  • Energy
  • Energy Transfer
  • Heat Engines
  • Heat Transfer
  • Materials
  • Mechanical Energy
  • Reversible
  • Stationary
  • Turbofan Engines

Readers

  • Aerodynamics.
  • Electrochemical Surface Science
  • Theoretical Analysis.

Technology Areas

  • Directed Energy