Numerical heat transfer analyses of a wavy-laminar falling film using moving curvilinear coordinates

作者：Aubert Adrien; Candelier Fabien; Solliec Camille^*

来源：International Communications in Heat and Mass Transfer, 2012, 39(8): 1073-1079.

DOI：10.1016/j.icheatmasstransfer.2012.06.012

• Numerical method
• Heat transfer
• Wavy film
• Surface instability
• Moving mesh

In most processes using water film, surface instabilities can be found at the free surface. This work focuses on analyzing their influence on wall heat flux. This is a coupled phenomenon whose full solution would be computationally intensive, so a simplified method is developed. The interface of the film is predicted using an algorithm based on statistical data measurements and the velocity profile is supposed auto-similar to that of Nusselt. The problem is solved numerically using a moving mesh fitted to the shape of the interface. The subsequent statistical analysis highlighted the relative importance of height fluctuations on wall heat flux.

• 出版日期2012-10