Control of Mixing by MEMS Based Distributed Fuel Injectors

摘要

In this paper, we propose to use micro injectors to control mixing of flow forcombustion 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.