The Effect of Spray Initial Conditions on Heat Release and Emissions in LDI CFD Calculations (Preprint)

Abstract

The mass, velocity distribution, droplet size and distribution of liquid spray has a primary effect on the combustion heat release process. This heat release process then affects emissions like Nitrogen Oxides (NOx) and Carbon Monoxide (CO). Computational Fluid Dynamics gives the engineer insight into these processes, but various setup options exist (number of droplet groups, initial droplet temperature) for spray initial conditions. This paper studies these spray initial condition options using the National Combustion Code (NCC) on a single swirler Lean Direct Injection (LDI) flame tube. Using laminar finite rate chemistry, comparisons are made against experimental data for velocity measurements, temperature, and emissions (NOx, CO).

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2008
Accession Number
ADA485366

Entities

People

  • Anthony C. Iannetti
  • Farhad Davoudzadeh
  • Nan-suey Liu

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Carbon Monoxide
  • Chemistry
  • Combustion
  • Computational Fluid Dynamics
  • Computational Science
  • Dielectric Gases
  • Experimental Data
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Large Eddy Simulation
  • Liquids
  • Measurement
  • Nitrogen Oxides
  • Three Dimensional
  • Turbines

Readers

  • Combustion and Flow Dynamics.
  • Computational Fluid Dynamics (CFD)
  • Internal Combustion Engine (ICE) Technology.