Abstract
In this paper we describe the results of the numerical study of the Boussinesq–Navier–Stokes equations for the convection flow in an open top three-dimensional parallelepipedic cavity (4×1×1) driven by a horizontal temperature difference at two opposite vertical walls in presence of thermocapillary effects. Two fluids have been considered with Prandtl number Pr=0.015 and Pr=1, at fixed Rayleigh number, Ra=150; simulations for several values of the Marangoni number (Ma) have been developed in order to detect fully three-dimensional flow configurations. From the analysis of the numerical flows we reach the following conclusions: the increase of the Prandtl number enhances the coupling of the heat and mass transfer phenomena, moreover while at Pr=0.015 a fully three-dimensional behavior is observed at Ma⩾200, at Pr=1 the flow configuration appears clearly three dimensional just at Ma=30; the increase of the Marangoni number induces the appearance of secondary counter-rotating vortices around to the primary one. The values of the Nusselt number at the main stream perpendicular middle plane are provided.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
