Amitabh Narain
Department of Mechanical Engineering and Engineering Mechanics Michigan Technological University Houghton, Michigan
G. Yu
Department of Mechanical Engineering and Engineering Mechanics Michigan Technological University Houghton, Michigan
Q. Liu
Department of Mechanical Engineering and Engineering Mechanics Michigan Technological University Houghton, Michigan
Abstrakt
This work focuses on computational techniques and simulation results for smooth-interface laminar/laminar stratified film condensation on the bottom wall (actively cooled) of an inclined (horizontal to vertical) channel. The full two dimensional numerical solution scheme solves the Navier-Stokes equations in each phase, locates the unknown interface, satisfies all the conditions at the phasechange interface, and satisfies the inlet/outlet/wall conditions. The results for channel flows allow new and improved understanding of the effects of changes in tilt, cooling strategies, exit conditions, entrance conditions and interfacial shear. A useful heat transfer/film thickness correlation is also presented.
For downward wavy-interface turbulent/laminar flows inside vertical tubes, this paper briefly describes a one (1D) and two dimensional (2-D) computational approach.