复速级鱼雷涡轮机工作过程仿真研究
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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ψ_1、ψ_2、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。
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.
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