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- W2934145885 abstract "Heat transfer characteristics on a cylindrical convex surface impinged by a row of circular jets are presented in this study. Two different jet-jet spacing values equal to 4d and 8d were studied with the curvature ratio (ratio of diameters of jet and impinging surface, d/D) keeping constant at 0.05. Results for a single jet impinging onto the convex surface are also reported. The impinging angle ‘θ’, dimensionless jet-target distance ‘L/d’, and Reynolds number ‘Re’ were varied in the range 0°−45°, 2–10 and 5000–40,000 respectively. The Nusselt number variations from impinging point till midpoint between adjacent jets for jet-jet spacing of 8d were similar in nature with those for single jet with a maximum difference approximately equal to 5% at the secondary peak region. The Nusselt number distribution for the multiple jets with spacing equal to 4d was different as the interaction of adjacent walljets restricted the spread of inner jets, especially for inclined impingement, with nearly 10% increase in the secondary peak value compared to single jet. The peak Nusselt number occurs at the impinging point for perpendicular impingement and moves to the uphill side with inclination of jet. Secondary peaks are observed for all jet configurations at Re > 10,000 and L/d ≤ 4 for perpendicular impingement, but for large jet inclinations, no secondary peaks were observed on the uphill side. The magnitude of secondary peak in the downhill side reduces with increase in inclination and the position shifts further downstream in the downhill side. A correlation for peak Nusselt number is proposed as a function of Re, L/d and θ." @default.
- W2934145885 created "2019-04-11" @default.
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- W2934145885 date "2019-07-01" @default.
- W2934145885 modified "2023-10-18" @default.
- W2934145885 title "Heat transfer distribution on a cylindrical convex surface due to obliquely impinging row of circular jets" @default.
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- W2934145885 doi "https://doi.org/10.1016/j.ijheatmasstransfer.2019.03.170" @default.
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