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Journal of Applied Fluid Mechanics، جلد ۱۰، شماره ۵، صفحات ۱۴۷۵-۱۴۸۶
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عنوان انگلیسی A Novel Method for Defining the Leeward Edge of the Planar Jet in Crossflow
چکیده انگلیسی مقاله To avoid the complexity of the edge definition by the half width, a new approach to defining the leeward edge of the planar jet in crossflow is introduced in this paper. Particle Image Velocimetry (PIV) experiments were performed to measure different flow regimes within the single jet and the dual jets configurations in crossflow. Based on the experimental data acquired, a series of velocity profiles were extracted from the flow field. In each profile, a velocity threshold was given to distinguish the regions sheltered and the regions not sheltered by the planar jet. The boundary of these regions was accordingly recognized as the leeward edge. Furthermore, fitting of the edge was carried out using a second order polynomial so as to enable a mathematical expression of the leeward edge. An application of the proposed approach towards the flow induced noise reduction using a planar jet is also discussed in this paper. In addition, the PIV frame assembly algorithm used in this study is reported.
کلیدواژه‌های انگلیسی مقاله Crossflow, Planar jet, Leeward edge, Flow, induced noise reduction, PIV
نویسندگان مقاله K. Zhao |
Department of Mechanical and Manufacturing Engineering, Trinity College Dublin, University of Dublin, Dublin, Republic of Ireland

X. Yang |
College of Aerospace Science and Engineering, National University of Defence Technology, Changsha 410073, P. R.China

P. N. Okolo |
Energy and Power Technology Division, Department of Mechanical Engineering, University of Nigeria, Nsukka, Nigeria

W. Zhang |
College of Aerospace Science and Engineering, National University of Defence Technology, Changsha 410073, P. R.China

W. Zhang |
College of Aerospace Science and Engineering, National University of Defence Technology, Changsha 410073, P. R.China

G. J. Bennett |
Department of Mechanical and Manufacturing Engineering, Trinity College Dublin, University of Dublin, Dublin, Republic of Ireland

نشانی اینترنتی https://www.jafmonline.net/article_535_a55358c7619d2ffad73e6b60d6588ebe.pdf
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