Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 0-89116-559-2

International Heat Transfer Conference 8
August, 17-22, 1986, San Francisco, USA

FORMATION OF THE GENERALIZED CONVECTIVE BOUNDARY CONDITION WITH THE PHYSICAL HEAT TRANSFER COEFFICIENT

Get access (open in a dialog) DOI: 10.1615/IHTC8.650
pages 1145-1150

Abstrakt

The generalized convective boundary condition for arbitrary surface temperature distribution is presented. On a small surface area, the surface heat flux density q is considered as a two-variable function of the location variable x and the local temperature Т/x/. Therefore the total difference dq/x,T/ can be expressed by the sum of the two partial differences. The first part can be expressed by the Duhamel theory and the application of the technical heat transfer coefficient ht. The second part can be written by using the definition of the physical heat transfer coefficient hph. The integrated result expressing the relation of q and T is an integral equation, in which the physical heat transfer coefficient distribution hph, is used.
The generalized boundary condition is also presented in the form of a matrix equation obtained by a numerical frame-work. The particular effectiveness of this method is shown by an example, where conjugate convection-condition is present.