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首页> 外文期刊>Journal of aerospace engineering >Pulse-Powered Turbine Engine Concept Implementing Rotating Valve Timing System: Numerical CFD Analysis
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Pulse-Powered Turbine Engine Concept Implementing Rotating Valve Timing System: Numerical CFD Analysis

机译：实现旋转气门正时系统的脉冲动力涡轮发动机概念：数值CFD分析

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The paper presents the pulse-powered turbine engine concept with implemented rotating valve timing system. The engine stands out a big energy efficiency and simple construction. A characteristic feature, and at the same time the main assumption, of the presented engine concept is the isochoric combustion process, which takes place in a stationary combustion chambers. The engine works according to Humphrey's thermodynamic cycle, which has a larger energy efficiency than the Brayton-Joule cycle that serves as the basis for classical turbine engines. The operation of investigated engine concept requires consecutive stages of preparation of high-pressure gases and supplying the turbine with these gases. The engine is powered by pulses, completely different than classical turbine engines, which are continuously powered. A realization of pulse powering requires the use of a valve timing system. It is crucial element of the presented engine concept, and has a decisive impact on its effective operation. The effectiveness of different valve timing systems was investigated by means of computational fluid dynamic (CFD) analysis. The analysed various intermediate valve timing concepts have led to the development of innovative rotating valve timing system, which seems to resolve many problems addressed in the beginning of the article. (c) 2019 American Society of Civil Engineers.
机译：本文介绍了带有已实现的旋转气门正时系统的脉冲动力涡轮发动机概念。该发动机具有很高的能效和简单的结构。所提出的发动机概念的特征性特征，同时也是主要的假设是等速燃烧过程，该过程在固定的燃烧室内进行。该发动机根据汉弗莱的热力学循环进行工作，该热力学循环的能量效率高于作为经典涡轮发动机基础的布雷顿－焦耳循环。被研究的发动机概念的运行需要准备高压气体并为涡轮机提供这些气体的连续步骤。发动机由脉冲驱动，与传统的涡轮发动机完全不同，脉冲由连续驱动。实现脉冲供电需要使用气门正时系统。它是提出的发动机概念的关键要素，并对其有效运行产生决定性影响。通过计算流体动力学（CFD）分析研究了不同气门正时系统的有效性。对各种中间气门正时概念的分析导致了创新的旋转气门正时系统的发展，这似乎解决了本文开头提到的许多问题。 （c）2019美国土木工程师学会。

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  • 来源
    《Journal of aerospace engineering》 |2019年第3期|04019017.1-04019017.13|共13页
  • 作者

    Tarnawski Piotr; Ostapski Wieslaw;

  • 作者单位

    Warsaw Univ Technol, Inst Machine Design Fundamentals, 84 Narbutta St, PL-02524 Warsaw, Poland;

    Warsaw Univ Technol, Inst Machine Design Fundamentals, 84 Narbutta St, PL-02524 Warsaw, Poland;

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