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Numerical Study of Flow and Heat Transfer in Confined and Unconfined Round Mist Impinging Jet

[+] Author Affiliations
Viktor I. Terekhov, Maksim A. Pakhomov

Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia

Paper No. IHTC14-22162, pp. 491-499; 9 pages
  • 2010 14th International Heat Transfer Conference
  • 2010 14th International Heat Transfer Conference, Volume 5
  • Washington, DC, USA, August 8–13, 2010
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4940-8 | eISBN: 978-0-7918-3879-2
  • Copyright © 2010 by ASME


The work presents results of numerical investigation of flow structure and heat transfer of unconfined and confined impact mist jets with low mass fraction of droplets (ML1 ≤1%). The downward gas-droplets jet is issued from a pipe and strikes into the center of the circular target wall. Mathematical model is based on the solution to RANS equations for the two-phase flow in Euler approximation. For the calculation of the fluctuation characteristics of the dispersed phase model equations of Derevich and Zaichik [1] and Zaichik et al. [2] were applied. Predictions were performed for the distances between the nozzle and the target plate x/(2R) = 0.5–10 and the initial droplets size (d1 = 5–100 μm) at the fixed Reynolds number based on the nozzle diameter, Re = 26600. Addition of droplets causes significant increase of heat transfer intensity in the vicinity of the jet stagnation point compared with the one-phase air impact jet.

Copyright © 2010 by ASME



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