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Structure and Stability of One-Dimensional Detonations in Ethylene-Air Mixtures by S. Yungster, Nasa Technical Reports Server (Ntrs), Et Al - Paperback
58.80 AED

Structure and Stability of One-Dimensional Detonations in Ethylene-Air Mixtures by S. Yungster, Nasa Technical Reports Server (Ntrs), Et Al - Paperback

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Category Type
Politics
ISBN
9781287275121
Author
S. Yungster, Nasa Technical Reports Server (Ntrs), Et Al
Publisher
Bibliogov
Description:

The propagation of one-dimensional detonations in ethylene-air mixtures is investigated numerically by solving the one-dimensional Euler equations with detailed finite-rate chemistry. The numerical method is based on a second-order spatially accurate total-variation-diminishing scheme and a point implicit, first-order-accurate, time marching algorithm. The ethylene-air combustion is modeled ...

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PRODUCT INFORMATION

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    Specifications

    Category Type
    Politics
    ISBN
    9781287275121
    Item EAN
    2724352872044
    People
    Author
    S. Yungster, Nasa Technical Reports Server (Ntrs), Et Al
    People
    Publisher
    Bibliogov
    Category Type
    Politics
    ISBN
    9781287275121
    Item EAN
    2724352872044
    People
    Author
    S. Yungster, Nasa Technical Reports Server (Ntrs), Et Al
    People
    Publisher
    Bibliogov
    Technical Information
    Binding
    Paperback
    Languages and countries
    Book Language
    English
    Read more
  •  

    Description:

    The propagation of one-dimensional detonations in ethylene-air mixtures is investigated numerically by solving the one-dimensional Euler equations with detailed finite-rate chemistry. The numerical method is based on a second-order spatially accurate total-variation-diminishing scheme and a point

    The propagation of one-dimensional detonations in ethylene-air mixtures is investigated numerically by solving the one-dimensional Euler equations with detailed finite-rate chemistry. The numerical method is based on a second-order spatially accurate total-variation-diminishing scheme and a point implicit, first-order-accurate, time marching algorithm. The ethylene-air combustion is modeled with a 20-species, 36-step reaction mechanism. A multi-level, dynamically adaptive grid is utilized, in order to resolve the structure of the detonation. Parametric studies over an equivalence ratio range of 0.5 less than phi less than 3 for different initial pressures and degrees of detonation overdrive demonstrate that the detonation is unstable for low degrees of overdrive, but the dynamics of wave propagation varies with fuel-air equivalence ratio. For equivalence ratios less than approximately 1.2 the detonation exhibits a short-period oscillatory mode, characterized by high-frequency, low-amplitude waves. Richer mixtures (phi greater than 1.2) exhibit a low-frequency mode that includes large fluctuations in the detonation wave speed; that is, a galloping propagation mode is established. At high degrees of overdrive, stable detonation wave propagation is obtained. A modified McVey-Toong short-period wave-interaction theory is in excellent agreement with the numerical simulations.

    Product Features:
    • Category: Politics
    • Binding: Paperback
    • Language of Text: English
    • Author(s): S. Yungster, Nasa Technical Reports Server (Ntrs), Et Al
    • Publisher: Bibliogov
    • ISBN: 9781287275121
    • Number of Pages: 22
    • Dimensions: 9.69 x 7.44 x 0.05 inches
 

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