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乙醇汽油割嘴内的气液两相流动是影响乙醇汽油雾化的重要因素,进一步影响火焰的燃烧特性与金属的切割质量。本文基于FLUENT软件,采用VOF(Volume of Fluid Model)方法来研究割嘴内的气液两相流动。通过分析一种新型氧乙醇汽油割嘴内部气液流动状况,探索了该乙醇汽油割嘴设计的可行性,同时也对VOF方法来研究割嘴内部流场进行了深入分析。同时本文对燃料入口压力分别为0.1、0.2和0.3MPa三种情况进行了比较,通过对不同压力下割嘴内部流场的分析,探索了割嘴内速度场与压力场的变化规律,为以后的割嘴改进与设计工作提供必要的理论依据。
Gas-liquid two-phase flow in the ethanol gasoline nozzle is an important factor affecting the atomization of ethanol gasoline, further affecting the combustion characteristics of the flame and the cutting quality of the metal. In this paper, based on FLUENT software, the VOF (Volume of Fluid Model) method is used to study the gas-liquid two-phase flow in the cutting tip. By analyzing the flow of gas and liquid inside a new type of oxyethanol gasoline cutting nozzle, the feasibility of designing the ethanol gasoline cutting nozzle was explored. The VOF method was also used to study the flow field inside the cutting nozzle. At the same time, this paper compares the fuel inlet pressures of 0.1, 0.2 and 0.3MPa respectively. Through the analysis of the flow field inside the cutting nozzle under different pressures, the change rule of velocity field and pressure field in the cutting nozzle is explored. The cutting tip improvement and design work to provide the necessary theoretical basis.