الفهرس 
LITERATURE SURVEYOnly 14 pages are availabe for public view
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Abstract
A theoretical study was carried out to solve the governing
equations for conservation of mass, momentum, and energy in the
boundary layers of the vapour and saturated liquid during pool
film boiling around an isothermal horizontal cylinder. The study
took into consideration the radiation effects of both the heating
surface and the vapour phase. The vapour phase was considered as
a radiatively participating gas and the radiation transfer
equation in its differential appro~imation form
was solved
together with the conservation equations. Numerical solutions
were obtained for the velocity and temperature fields, and
radiation heat flux at different circumferential positions of
various tube diameters and for different wall emissivities. Thus
the mean heat transfer coefficient was computed.
Linear stability analysis was done for the problem of the
interfacial instability of the vapour and its saturated liquid
takin~ into consideration the effects of heat and mass transfer
on such instability. Results concerning the most dangerous wave
length, most dangerous growth rate, and most dangerous physical
frequency were obtained and analyzed. These results, in
conjunction with the undisturbed vapour film thickness, and the
bubble energy and dynamical equations, were used to build a new
model to predict the heat transfer coefficients on horizontal
surfaces either flat or cylindrical. In order to test the
validity of the modal, a comparison was held between its results
and the available e~perimental results of the author as well as
those of the others. The comparison-for different fluids showed a
very good a~reement, and revealed the generality, and the
plausibility of the new model