Abstract
The nonsteady results of investigating the nonsteady heat-carrier mixing in bundles of spiral tubes with periodic variation in air flow rate by heat diffusion from a central group of electrically heated tubes are outlined. The frequency and amplitude of flow-rate oscillation influence the variation in heat-carrier temperature and effective turbulent-diffusion coefficient. The transition from steady thermal conditions to conditions with regular periodic variation in the temperature and the relative coefficient of heat-carrier mixing for the given type of nonsteady hydrodynamic conditions is considered.
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Literature cited
B. V. Dzyubenko, G. A. Dreitser, and L. A. Ashmantas, Nonsteady Heat and Mass Transfer in Spiral-Tube Bundles [in Russian], Moscow (1988).
B. V. Dzyubenko, L. A. Ashmantas, and A. B. Bagdanavichyus, Inzh.-fiz. Zh.,.56, No. 1, 5–11 (1989).
B. V. Dzyubenko, L. A. Ashmantas, and A. B. Bagdonavichyus, Inzh.-fiz. Zh.,55, No. 3, 357–363 (1988).
Additional information
Translated from Inzhenerno-fizicheskii Zhurnal, Vol. 60, No. 5, pp. 724–729, May, 1991.
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Dzyubenko, B.V., Ashmantas, L.A., Bagdonavichyus, A.B. et al. Interchannel heat-carrier mixing with periodic flow-rate variation over time in spiral-tube bundles. Journal of Engineering Physics 60, 547–551 (1991). https://doi.org/10.1007/BF00871479
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DOI: https://doi.org/10.1007/BF00871479