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本实验研究的特点在于:对1.465和2.12马赫的超音速氧气射流及其与LD熔池的相互作用,根据相似理论进行模拟。本文的第一分提出了顶吹转炉流体动力学模拟实验的相似准则。根据相似理论,射流动力相似与射流对熔池作用相似必须同时实现。为此,提出了实验的新方法——低密度模拟。用这种方法完成了各种条件下射流气动力特性、射流对熔池的作用、熔池脱碳速度等七个方的模拟。本文第二分运用冯·卡门连续介质理论及美国NACA的实验结果阐述了本实验方法的可(亻告)性。本文第三分指出了顶吹转炉流体动力学低密度模拟方法的应用范围。
The experimental study is characterized by the supersonic oxygen jets of 1.465 and 2.12 Mach and their interaction with the LD pool, simulated by a similar theory. The first part of this paper presents a similar criterion for the hydrodynamic simulation of a top-blown converter. According to the similar theory, the similarity of jet power and the effect of jets on the molten pool must be realized at the same time. To this end, proposed a new experimental method - low density simulation. In this way, the aerodynamic characteristics of the jet under various conditions, the role of the jet on the molten pool, the decarburization rate of the molten pool and other seven parties were simulated. In the second part of this paper, we use the von Karman continuous medium theory and the experimental results of the United States NACA to illustrate the feasibility of this method. The third part of this paper points out the application range of the hydrodynamic low-density simulation method for top-blown converter.