Date of Publication:2015-01-01
Journal:工程热物理学报
Volume:36
Issue:4
Page Number:820-824
ISSN No.:0253-231X
Abstract:Droplet could be swept by steam flow during dropwise condensation.
   Droplet morphology could be deformed and could move on the solid surface
   overcoming the adhesion work of solid under the steam shearing effect.
   Steam condensation heat transfer performance becomes high when the steam
   velocity increases. However, the detailed information of the droplet
   deformation and motion under steam shearing effect has not been clear.
   The influence mechanism of steam velocity on droplet deformation and
   motion has not been completed. Therefore, in this paper, droplet
   deformation and motion on solid surface with various wettability
   properties under different steam velocities applying free energy lattice
   Boltzmann method. The influence mechanism of steam velocity and contact
   angle on droplet deformation and motion is analyzed. Indicating that
   droplet deformation and motion velocity increase with the increase of
   steam velocity and contact angle. The residence time of droplet is
   shortened and the surface renewal frequency is ascended. As a result,
   the physical mechanism of steam velocity on dropwise condensation heat
   transfer is displayed qualitatively and semi-quantitatively.
Note:新增回溯数据