This paper studies the characteristics of water atomization in oil, which is the key problem of a new fluid ice producing technology. Numerical method is used in the research, and relevant results and conclusions are obtained.

The particle diameter distribution of liquid droplets is one of the key factors involved in the technology for making fluid ice from a liquid-liquid circulating fluidized bed.

This paper studies the characteristics of water atomization in oil, which is the key problem of a new fluid ice producing technology. Numerical method is used in the research, and relevant results and conclusions are obtained.

The particle diameter distribution of liquid droplets is one of the key factors involved in the technology for making fluid ice from a liquid-liquid circulating fluidized bed.

This paper studies the characteristics of water atomization in oil, which is the key problem of a new fluid ice producing technology. Numerical method is used in the research, and relevant results and conclusions are obtained.

The particle diameter distribution of liquid droplets is one of the key factors involved in the technology for making fluid ice from a liquid-liquid circulating fluidized bed.

Based on a new method to produce fluid ice,water atomization in immiscible oil flow is simulated numerically in this paper.A set of three-dimensional transient conservation equations of mass and momentum are established by taking surface tension and gravitational force effects into consideration.The governing equations are solved by using Pressure Implicit Splitting Operators(PISO) algorithm.The volume-of-fluid(VOF) method in conjunction with the multi-dimensional piecewise linear interface construction(PLIC)...

Based on a new method to produce fluid ice,water atomization in immiscible oil flow is simulated numerically in this paper.A set of three-dimensional transient conservation equations of mass and momentum are established by taking surface tension and gravitational force effects into consideration.The governing equations are solved by using Pressure Implicit Splitting Operators(PISO) algorithm.The volume-of-fluid(VOF) method in conjunction with the multi-dimensional piecewise linear interface construction(PLIC) is applied to characterize the behavior of water-oil interface movement.The flow phenomena in different working conditions are researched.The results of simulation show that the average atomization diameter of water droplets increases with the velocity of water and decreases with the velocity of oil,and it increases with the diameter of atomization pipe.

基于一种制取流体冰的新方法,对水在流动的互不相溶的油介质中的雾化机理进行了三维数值模拟,求解连续性方程和动量守恒方程并考虑重力及表面张力的影响,对压力速度耦合采用PISO(Pressure Implicit Splitting Operators)算法,利用VOF(Volum e of Flu id)方法中的PLIC(P iecew ise L inear Interface Construction)技术追踪水与油介质之间的移动界面,模拟多种情况下的流动状况,分析了水在喷口处的流速、油的入口流速以及喷口直径对于雾化水滴大小的影响.模拟结果表明,雾化形成的水滴平均直径随水在喷口处的流速增加而增大,随油的入口流速的增加而减小;喷口直径越大,水滴的平均直径越大.

The particle diameter distribution of liquid droplets is one of the key factors involved in the technology for making fluid ice from a liquid-liquid circulating fluidized bed. On a fluidized bed test device, by using a method combining high speed photography with image processing, a study has been conducted of the liquid-liquid single-hole atomized jet-flow at a low flowing speed and its impact on the distribution of particle diameters of liquid droplets. In this connection, a mathematico-statistical method...

The particle diameter distribution of liquid droplets is one of the key factors involved in the technology for making fluid ice from a liquid-liquid circulating fluidized bed. On a fluidized bed test device, by using a method combining high speed photography with image processing, a study has been conducted of the liquid-liquid single-hole atomized jet-flow at a low flowing speed and its impact on the distribution of particle diameters of liquid droplets. In this connection, a mathematico-statistical method was employed to analyze the change in jet flow length and the distribution of particle diameters of liquid droplets. It has been found from the analysis that a jet flow emerges when its speed is greater than 1.14 m/s and the fluctuations in the jet flow length at various flow speeds assume a random and non-periodic character. Moreover, with an increase of the jet flow speed the mean value and variance of the jet flow length show an overall variation tendency of “first increase and then decrease". With the jet flow speed being 6.58 m/s, which is a turning point, a spherical or conical jet-flow top is formed at the peak point of the jet flow length fluctuations. This is the main reason why there emerged a difference in magnitude of the particle diameters of liquid droplets and their movement routes showed signs of wobbling. At various flow speeds, the distribution of particle diameters of the liquid droplets is in very good agreement with Rosin-Rammler distribution. The research results provide a reliable basis for controlling the distribution of particle diameters of liquid droplets resulting from atomization during the actual operation of a liquid-liquid circulating fluidized bed.

>=Based on a new method to produce fluid ice, water atomization in immiscible oil is simulated numerically in this paper. A set of transient conservation equations of mass and momentum with the consideration of surface tension and gravitational force effects are established. The volume-of-fiuid (VOF) method in conjunction is applied to characterize the behavior of water-oil interface movement. The relations between the average size of droplets, the velocity of water and the equivalent diameter of the spout...

>=Based on a new method to produce fluid ice, water atomization in immiscible oil is simulated numerically in this paper. A set of transient conservation equations of mass and momentum with the consideration of surface tension and gravitational force effects are established. The volume-of-fiuid (VOF) method in conjunction is applied to characterize the behavior of water-oil interface movement. The relations between the average size of droplets, the velocity of water and the equivalent diameter of the spout are obtained. The results of simulation show that the average atomization diameter of water droplets increases with the velocity of water and decreases with the velocity of oil, and it increases with the diameter of atomization pipe. And the droplet size distribution is according with Rosin-Rammler distribution.

基于一种制取流体冰的新方法,对水在互不相溶的油介质中的雾化特性进行了三维数值模拟研究,求解连续性方程和动量守恒方程并考虑重力及表面张力的影响,利用VOF(Volume of Fluid)方法追踪水与油介质之间的移动界面,获得了一定范围内水在静止油介质中雾化水滴的平均直径与水在喷口处流速、喷口当量直径之间的关系式,分析了水在喷口处的流速、油的入口流速以及喷口直径对于雾化水滴大小的影响,并对粒径分布进行统计。研究结果表明,喷口直径越大,水滴的平均直径越大;在流动油介质中雾化形成的水滴平均直径随水在喷口处的流速增加而增大,随油的入口流速的增加而减小,并且水滴粒径符合Rosin—Rammler分布。