Influence of temperature on n-heptane liquid injection characteristics through PIV experiment

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Influence of temperature on n-heptane liquid injection characteristics through PIV experiment

TIAN Jing¹, DU Lichao¹, ZHOU Weixing^2a, WU Chuanwei^2b, LAN Zhenzhong^2b

(1. College of Aeronautical Engineering, CAUC, Tianjin 300300, China; 2a. Academy of Fundamental and Interdisciplinary Sciences;
2b. Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)

Received:2017-04-12 Revised:2017-05-10 Online:2018-02-24 Published:2018-01-17

Abstract

Abstract: N-heptane injection characteristics under different temperatures and pressures is studied basing on PIV (particle image velocimetry)experimental system and is used for the design of engine fuel supply system. Under the condition of temperature rising, macro images have been taken at different temperatures and injection pressures forthestudyofn-heptanejetcharacteristics.Resultsshowthatamongtheliquid n-heptaneinjection characteristics,maximum spray-cone angle increases with increasing pressure; while, with the increasing temperature, spraycone angle and injection maximum width first increase and then decrease. In the experiment, when the pressure is less than 0.5 MPa, temperature of injection cone increases significantly with increasing pressure. When the pressure is greater than 0.5 MPa, the temperature of this moment decreases with increasing pressure.

Key words: injection characteristics, PIV, cone angle, maximum width

CLC Number:

V231.2
TH137

TIAN Jing, DU Lichao, ZHOU Weixing, WU Chuanwei, LAN Zhenzhong. Influence of temperature on n-heptane liquid injection characteristics through PIV experiment[J]. .

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