Control of Mixing by MEMS Based Distributed Fuel Injectors

Abstract

In this paper, we propose to use micro injectors to control mixing of flow for combustion enhancement. The principle and development of the micro injectors are described. Ejection of droplets (8 micrometers in diameter) from the micro injectors has been detected with a pulse train of 53 mA current, 1 kHz frequency, and 1/30 duty cycle. In parallel, an air jet experiment has been performed to control the shedding frequency of the air jet with perpendicularly injected droplets by utilizing a commercial inkjet printhead (HP 51604A) as the source of droplets. The results demonstrated the ability for the injected droplets to change the flow's characteristic frequency from the natural shedding one to the forcing (injection) one.

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Document Details

Document Type
Technical Report
Publication Date
Aug 20, 1997
Accession Number
ADA328581

Entities

People

  • Chang-jin Kim
  • Chih-ming Ho

Organizations

  • University of California, Los Angeles

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Ceramic Materials
  • Chambers
  • Charge Coupled Devices
  • Chemical Vapor Deposition
  • Combustion
  • Combustors
  • Diameters
  • Fabrication
  • Flow
  • Frequency
  • Fuel Injectors
  • Hot Wire
  • Hot Wire Anemometers
  • Injectors
  • Jet Flow
  • Microelectromechanical Systems
  • Micromachining

Readers

  • Electrical Engineering
  • Fluid Mechanics and Fluid Dynamics.
  • Internal Combustion Engine (ICE) Technology.