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Laminar Combined Free and Forced Convection Heat Transfer in the Entry Length of a Horizontal Pipe

[+] Author Affiliations
Mahmoud Ahmed Al Araby, Mohamed Khamis Shaban, Abd El Azez Sarhan Salem

Al Azhar University, Cairo, Egypt

Mamdouh M. Mahmoud

Gasco, Cairo, Egypt

Paper No. HT-FED2004-56750, pp. 541-552; 12 pages
doi:10.1115/HT-FED2004-56750
From:
  • ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
  • Volume 1
  • Charlotte, North Carolina, USA, July 11–15, 2004
  • Conference Sponsors: Heat Transfer Division and Fluids Engineering Division
  • ISBN: 0-7918-4690-3 | eISBN: 0-7918-3740-8
  • Copyright © 2004 by ASME

abstract

The present research work was carried to represent a numerical study and experimental investigation of laminar combined free - and - forced convection in the entry region of a horizontal constant wall temperature with simultaneous development of fluid velocity and temperature. The analytical study employed a sample case with Re = 100, Pr = 0.7 and Gr = 5000, 10000 and 100000 to demonstrate the results which are temperature, axial, radial and angular velocities. The experimental investigation presents temperatures profiles for Gr = 100000 at Re = 200 to 1000. The aim of the present study is to investigate the characteristics of laminar combined free - and - forced convection in the entrance region of a horizontal pipe of constant surface temperature with simultaneous development of fluid velocity and temperature.

Copyright © 2004 by ASME

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