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

EXPERIMENTAL AND THEORETICAL EVIDENCES FOR DISSIPATLVE MODEL OF FILM BOILING CRISIS

Get access (open in a dialog) DOI: 10.1615/IHTC8.3970
pages 2025-2029

Abstrakt

In order to determine the minimum film boiling temperature the variational hypothesis of non-equlibrium phase change was employed [l]. On the grounds of the photographic investigations of the vapor film behaviour with decreasing temperature of a heating surface, a proposition was submitted according to which the "tongues" of liquid penetrating through the vapor film do not decay if the dissipation of energy in the "tongues" is equal to energy dissipation in the vapor film. The value of local potential was used as a general measure of energy dissipation [2,3]. The local potentials for the vapor and liquid phases were determined assuming in both phases the model of stagnation and creeping flows in boundary layer. The values of the minimum film boiling temperature were found as a function of pressure. A good agreement was achieved with experimental results of S. Yao and R. E. Henry [5]