A Diffuser Heat Transfer and Erosion Code

Abstract

A computer code for diffuser heat transfer and erosion analysis (DHTE) has been developed which improves upon the earlier Rocket Engine Diffuser Thermal Analysis Program (REDTAP). Improvements contained within DHTE include provision for a radial temperature gradient within the diffuser wall, an improved model for the particle impingement accommodation coefficient, a model for particle debris shielding, and a model for wall erosion by particle impact. DHTE differs from an earlier diffuser heat transfer code (DHT) to the extent that it incorporates a simple erosion model and utilizes a more recent diffuser version of the JANNAF Standardized Plume Flow Field Model (SCP2ND). The 77-inch diffuser was instrumented to record the water side wall temperature and water jacket temperature at selected sites along the initial seven feet of the diffuser during routine test firings. Data is presented that supports the predictions of DHTE but is inadequate to validate the code.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1985
Accession Number
ADA162436

Entities

People

  • Gale H. Buzzard

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Boundary Layer
  • Computer Programs
  • Data Sets
  • Energy
  • Equations
  • Exhaust Gases
  • Experimental Data
  • Flow Fields
  • Flow Rate
  • Fluid Flow
  • Heat Capacity
  • Heat Transfer
  • Particle Size
  • Rocket Engines
  • Rocket Propulsion
  • Specific Heat

Readers

  • Computational Modeling and Simulation
  • Fluid Dynamics.
  • Rocket Propulsion.