复速级鱼雷涡轮机工作过程仿真研究

【作者】 宋志明；

【导师】 赵寅生；

【作者基本信息】 西北工业大学 ， 武器系统与运用工程， 2001， 硕士

【摘要】 现代海战对鱼雷的诸战术指标提出了更高更新的要求，作为鱼雷心脏的热动力系统是鱼雷研制的一项关键技术。随着计算机技术的迅猛发展，数字化仿真技术在各工程领域得到广泛应用。武器系统数字化仿真研究在各国方兴未艾，尤其将仿真技术应用于日益复杂的鱼雷热动力系统，可使研制周期缩短，大幅降低成本，并且调试方便灵活，具有重要意义和广阔的应用前景。 本文以工程热力学为指导，在紧密剖析涡轮机工作原理的基础上，建立了轴流式部分进气纯冲动式复速级涡轮发动机的数学模型。首先以鱼雷最主要工作状况（即设计工况）为依据设计确定涡轮机结构，建立其数学模型。气轮机的主要工作参数为工质初参数P_c、T_o，背压P_l和转速N。当鱼雷工作于非设计工况时，这些参数都可以独立地变化，从而使得原涡轮机模型中某些参数（如工作及导向叶片数度系数ψ₁、ψ₂、ψ_g，轮周效率η_u等等）发生变化。本文针对各工况，采用予估校正的方法，编程计算模型中各变化的参数，从而确定涡轮机相应于各工况的精确数学模型。 建立以涡轮机为发动机的鱼雷热动力系统的数学模型，该系统采用开式循环。对典型的工况：稳态参数、恒深变速过程、变深过程进行了仿真计算。 依据涡轮机数学模型，讨论了鱼雷变工况航行时涡轮发动机的调节方案。更多还原

【Abstract】 More and more higher performance of thermodynamic propulsion system of torpedo is required to adapt to the present-day sea fight. As the central part of torpedo, thermodynamic propulsion system is the key technique in the field of research and manufacture of torpedo. With the rapidly development of the computer technology, digital simulation technology is widely using now in all kind of engineering field. Digital simulation in weapon system has come force in recent year in much country and will develop rapidly in near future. Especially in the field of torpedo thermodynamic propulsion system which is more and more complicated, digital simulation technology may shorten the period of research, reduce the costing greatly, adjust more agility and handily and so on. It has important significance and rangy applying prospect. Based on the theory of engineering thermodynamics, this paper profoundly analyzed the work theory of torpedo turbine engine and established the mathematics model of turbine engine. Firstly, we design the structure of torpedo turbine engine according to the most important work condition (namely design condition) and found its mathematics model. The main work parameter of turbine engine are original parameter of gas such as P~, T and back press (express as P1), rotate speed (express as N). When the work condition is changed, all these parameter may vary independently, this led to some parameter of 2 the former model changing. Aim at all kind of work condition, We adopted the measure of pre- estimate and rectify and program to calculate the parameter which has changed. Then we get the accuracy mathematics model of the parallelism work condition. We established the mathematics model of the, whole torpedo thermodynamic propulsion system which adopt unclose cycle form. Based on the math model we simulated the typical work state of the torpedo propulsion system: steady state, process of changing speed of the torpedo in the same depth and changing depth in the same speed. According to the math model of turbine, we bring forward a kind of measure to adjust the turbine during the transition process.更多还原