P H Price 1959 Br. J. Appl. Phys. 10 135 doi:10.1088/0508-3443/10/3/305
P H Price
Show affiliationsThe use of a heat transfer coefficient as a general parameter of forced convection heat transfer is shown to be unsatisfactory, and an alternative correlation making explicit allowance for pipe wall temperature variations is derived. In the derivation it is assumed that radial heat transfer in the fluid may be represented as due to an effective conductivity, and that longitudinal heat transfer is by fluid transport only. The effective conductivity and the fluid forward velocity may be arbitrary functions of radical distance.
The correlation shows that the difference between wall and mean fluid temperature at any distance along the tube is composed of an entry condition term which diminishes with distance along the pipe, plus a series of terms due to temperature variations along the pipe wall. The values of the coefficients of these terms have been calculated for two ideal cases, and experimental values are being sought. Some implications of the correlation are discussed.
Issue 3 (March 1959)
Received 27 August 1958
P H Price 1959 Br. J. Appl. Phys. 10 135
V V Dodonov et al 2005 J. Opt. B: Quantum Semiclass. Opt. 7 S468
A Weddemann et al 2009 New J. Phys. 11 113027
R C Batra and A Sears 2007 Modelling Simul. Mater. Sci. Eng. 15 835
Zhang Yang et al 2008 Chinese Phys. Lett. 25 644
R F Berg 2006 Metrologia 43 183
B Watson et al 2009 J. Micromech. Microeng. 19 022001
Xie Yi-Qun et al 2008 Chinese Phys. Lett. 25 1056
M Valin and P Marmet 1975 J. Phys. B: At. Mol. Phys. 8 2953
2009 J. Radiol. Prot. 29 545