On the Mechanism of Interaction of Two Water Droplets Moving Successively at a Small Distance from Each Other in a High-Temperature Gas Medium

被引：1

作者：

Volkov R.S. ^{[1
]}

Kuznetsov G.V. ^{[1
]}

Strizhak P.A. ^{[1
]}

机构：

[1] National Research Tomsk Polytechnic University, 30 Lenin Ave, Tomsk

来源：

Journal of Engineering Physics and Thermophysics | 2017年 / 90卷 / 01期

关键词：

coagulation; droplet; evaporation; group of droplets; high-temperature gases; water;

D O I：

10.1007/s10891-017-1548-3

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

An experimental study has been made of the macroscopic regularities of travel of two water droplets with initial diameters of 1 to 3 mm with a velocity to 3 m/s through a high-temperature (~1100 K) gas counterflow propagating with a velocity no higher than 1.5 m/s. Consideration has been given to successive motion of the two droplets in the gas medium with variation of the initial distance between them in the range 5–30 mm. The hypothesis that the rate of evaporation of the second droplet in the gas counterflow is much lower than that of the first droplet has been substantiated experimentally. The physical model of the processes of approach of the droplets and their subsequent coagulation has been formulated. © 2017, Springer Science+Business Media New York.

引用

页码：134 / 139

页数：5

共 18 条

[1]

Sirignano W.A., Fluid Dynamics and Transport of Droplets and Sprays, (1999)

[2]

Eggers J., Villermaux E., Physics of liquid jets, Rep. Prog. Phys., 71, (2008)

[3]

Varaksin A.Y., Hydrogasdynamics and thermal physics of two-phase flows: problems and achievements, Teplofiz. Vys. Temp., 51, 3, pp. 421-455, (2013)

[4]

Terekhov V.I., Terekhov V.V., Shishkin N.E., Bi K.C., Experimental and numerical investigations of nonstationary evaporation of liquid droplets, J. Eng. Phys. Thermophys., 83, 5, pp. 883-890, (2010)

[5]

Malai N.V., Ryazanov K.S., Shchukin E.R., Stukalov A.A., On the force acting on a heated spherical droplet moving in a gaseous medium, Prikl. Mekh. Tekhn. Fiz., 52, 4, pp. 63-71, (2011)

[6]

Flock A.K., Guildenbecher D.R., Chen J., Sojka P.E., Bauer H.J., Experimental statistics of droplet trajectory and air flow during aerodynamic fragmentation of liquid drops, Int. J. Multiphase Flow, 47, pp. 37-49, (2012)

[7]

Hwang S.S., Liu Z., Reitz R.D., Breakup mechanisms and drag coefficients of high-speed vaporizing liquid drops, Atomization Sprays, 6, pp. 353-376, (1996)

[8]

Sprittles J.E., Shikhmurzaev Y.D., Coalescence of liquid drops: Different models versus experiment, Phys. Fluids, 24, (2012)

[9]

Volkov R.S., Kuznetsov G.V., Strizhak P.A., The influence of initial sizes and velocities of water droplets on transfer characteristics at high-temperature gas flow, Int. J. Heat Mass Transf., 79, pp. 838-845, (2014)

[10]

Volkov R.S., Kuznetsov V.G., Strizhak P.A., Peculiarities of evaporation of two water droplets moving successively through high-temperature combustion products, Teplofiz. Aéromekh., 21, 2, pp. 269-272, (2014)

← 1 2 →