2D and 3D Modeling Efforts in Fuel Film Cooling of Liquid Rocket Engines (Conference Paper with Briefing Charts)

Abstract

Two- and three-dimensional simulations of slot injection of fuel film cooling have been carried out using an unsteady detached eddy simulation (DES) turbulence model at operating conditions relevant to liquid rocket engine (LRE) thrust chambers. The aim of this study is to determine what parameters drive unsteadiness in fuel films, and how these parameters affect wall temperature profiles. Parametric studies performed in 2D suggest that a Helmholtz resonator exists for simple slot geometries. Frequencies in 3D were observed to be of a lower frequency, with a rich mix of modes driving unsteadiness. Changing the shape of the inlet had a strong impact on both unsteadiness and wall temperature profile. These simulations do not capture trends seen in experimental results, but do provide insight into the complex nature of fuel film cooling.

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Document Details

Document Type
Technical Report
Publication Date
Jan 12, 2017
Accession Number
AD1025714

Entities

People

  • Edward B. Coy
  • Kevin C. Brown
  • Venkateswaran Sankaran

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Cavity Resonators
  • Combustion
  • Combustion Chambers
  • Computational Fluid Dynamics
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Heat Transfer
  • Ideal Gas Law
  • Physics Laboratories
  • Resonators
  • Reynolds Number
  • Rocket Engines
  • Three Dimensional
  • Turbulence
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Computational Fluid Dynamics (CFD)