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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：脉冲动力涡轮发动机概念实现旋转气门定时系统：数值CFD分析

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摘要

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：本文介绍了具有实施旋转气门正时系统的脉冲动力涡轮发动机概念。该发动机脱颖而出了大能效率和简单的结构。特征特征，并且同时具有所提出的发动机概念的主要假设是等级燃烧过程，其在固定燃烧室中进行。该发动机根据HUMPHREY的热力学循环工作，该循环具有比BRAYTON-joule循环更大的能量效率，可作为经典涡轮发动机的基础。调查的发动机概念的操作需要连续的高压气体制备并用这些气体供应涡轮机。发动机由脉冲供电，与经典涡轮发动机完全不同，涡轮发动机连续供电。脉冲功率的实现需要使用气门正时系统。它是所提出的发动机概念的关键因素，对其有效操作具有决定性的影响。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。分析的各种中间阀正时概念导致了创新的旋转气门正时系统的开发，似乎解决了文章开头所解决的许多问题。 （c）2019年美国土木工程学会。

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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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