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    Volume 49, Issue 1 (February 2020)

    Special Issue Paper

    Firewater Monitor Trajectories Based on Jet Expansion and Dynamic Breakup Model

    (Received 25 September 2019; accepted 11 December 2019)

    Published Online: 07 February 2020

    CODEN: JTEVAB

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    Abstract

    The primary objective of this study was to establish a model for predicting the jet trajectory of a firewater monitor. The jet trajectory is mainly affected by its own gravity and air resistance, and the magnitude of the air resistance changes with the cross-sectional area of the jet. The model is established by combining air resistance changes and breakup theory, and the factors affecting the location of jet trajectory are studied. The accuracy and reliability of the model is verified by comparative analysis of theoretical simulation data and experimental data. The error between the prediction and experimental data that can be maintained is about 10 % on average, which can meet the engineering application requirements. In addition, the shape of the jet and analyses of the causes of shape asymmetry are discussed.

    Author Information:

    Shang, Wenqian
    School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai,

    Liu, Xintian
    School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai,

    Zhang, Minghui
    School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai,

    Qu, Yang
    School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai,

    Wang, Yansong
    School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai,


    Stock #: JTE20190748

    ISSN:0090-3973

    DOI: 10.1520/JTE20190748

    Author
    Title Firewater Monitor Trajectories Based on Jet Expansion and Dynamic Breakup Model
    Symposium ,
    Committee E05