Published 12 issues per year
ISSN Print: 1044-5110
ISSN Online: 1936-2684
Indexed in
SPRAY FORMATION BY FLASHING OF A BINARY MIXTURE: A PARAMETRIC STUDY
ABSTRACT
A binary liquid mixture which consists of a low-vapor-pressure liquid and a propellant has been considered. When the mixture is discharged through an appropriate injection system, the propellant undergoes a rapid flash boiling process which results in a disintegration of the continuous liquid phase into small droplets. In the present work, the effect of the injection system design on the spray characteristics is investigated experimentally. It is concluded that: (1) the real behavior of the solution, as compared to ideal solution behavior, is an important factor; (2) the important stage of nucleation occurs at the metering orifice and apparently, the main duct does not play any significant role in the bubbles' nucleation; (3) neither the expansion chamber diameter nor its length has any significant effect on the droplet Sauter mean diameter (SMD), (4) an orifice's diameters ratio (metering to discharge) between 0.6 and 0.9 results in a minimum SMD; and (5) the SMD is correlated well with a modified version of the Jakob number of the form of Ja* = xβ(CpΔT/hfg).
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Gemci T., Yakut K., Chigier N., Ho T.C., Experimental study of flash atomization of binary hydrocarbon liquids, International Journal of Multiphase Flow, 30, 4, 2004. Crossref
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Bar-Kohany T., Sher E., Effervescent atomization under sub-sonic and choked conditions—a theoretical approach, Chemical Engineering Science, 59, 24, 2004. Crossref
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Sher E., Rashkovan A., Debotton G., Kholmer V., Gas-Dissolved Gasoline Spray - An Experimental Study, SAE Technical Paper Series, 1, 2002. Crossref
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Ju Dehao, Shrimpton John, Bowdrey Moira, Hearn Alex, Effect of expansion chamber geometry on atomization and spray dispersion characters of a flashing mixture containing inerts. Part I. Numerical predictions and dual laser measurements, International Journal of Pharmaceutics, 432, 1-2, 2012. Crossref
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Sher Eran, Bar-Kohany Tali, Rashkovan Alexander, Flash-boiling atomization, Progress in Energy and Combustion Science, 34, 4, 2008. Crossref
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Rashkovan A., Rivin B., Sher E., Optimization of Gasoline-Dissolved CO2 Injectors, SAE Technical Paper Series, 1, 2004. Crossref
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Ji Can, Cheng Lin, Wang Naihua, Liu Zhigang, Experimental investigation on high-pressure high-temperature spray flash evaporation and the characteristic Jakob number, Experimental Thermal and Fluid Science, 102, 2019. Crossref
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Wang Xin-Sheng, Chen Bin, Zhou Zhi-Fu, Atomization and surface heat transfer characteristics of cryogen spray cooling with expansion-chambered nozzles, International Journal of Heat and Mass Transfer, 121, 2018. Crossref
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Lu Jinghe, Liu Xiao, Hu Chuanlong, Li Zhiming, Zheng Hongtao, Li Shuying, Experimental study on flashing spray characteristics of pressure swirl nozzle with ethanol solution, Experimental Thermal and Fluid Science, 112, 2020. Crossref
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Shemirani Farzin M., Church Tanya K., Lewis David A., Finlay Warren H., Vehring Reinhard, Onset of Flash Atomization in a Propellant Microjet, Journal of Fluids Engineering, 137, 9, 2015. Crossref
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Kim Huijun, Kim Jeongheon, Park Sungwook, Atomization characteristics of aerosol spray from hair spray vessel with various design parameters, Journal of Aerosol Science, 133, 2019. Crossref
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Moshkovich Yahav, Levy Yeshayahou, Sher Eran, Theoretical criteria for homogeneous flash boiling atomization, Chemical Engineering Science, 206, 2019. Crossref
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Nasr G. G., Yule A. J., Bendig L., Sprays in Industrial Production Processes, in Industrial Sprays and Atomization, 2002. Crossref
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Moshkovich Y., Levy Y., Sher E., Experimental observations of the transition between heterogeneous to homogeneous nucleation regimes in flash-boiling atomization, International Journal of Multiphase Flow, 134, 2021. Crossref
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Zhou Ze, Li Yanfei, Zhang Jingyu, Wang Yu, Yan Fuwu, Xu Hongming, Effects of component proportions on multi-jet instant expansion of binary solutions under flash boiling conditions, Fuel, 308, 2022. Crossref
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Miao Junjie, Fan Yuxin, Wu Weiqiu, Effects of nozzle configuration on flash boiling fuel sprays of twin-orifice nozzle with aviation kerosene, International Journal of Heat and Mass Transfer, 174, 2021. Crossref
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Miao Junjie, Fan Yuxin, Wu Weiqiu, Characteristics of flash boiling spray of aviation kerosene in the twin-orifice nozzle, Fuel, 297, 2021. Crossref
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Duke Daniel J., Nguyen Dung T., dos Reis Larissa Gomes, Silva Dina M., Neild Adrian, Edgington-Mitchell Daniel, Young Paul M., Honnery Damon R., Increasing the fine particle fraction of pressurised metered dose inhaler solutions with novel actuator shapes, International Journal of Pharmaceutics, 597, 2021. Crossref
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Avni Orr, Bar-Kohany Tali, Sher Eran, Flash boiling atomization triggered and driven by intensive radiation, Thermal Science and Engineering Progress, 32, 2022. Crossref