The Relative Contribution of Solutal Marangoni Convection to Thermal Marangoni Flow Instabilities in a Liquid Bridge of Smaller Aspect Ratios under Zero Gravity

The effect of solutal Marangoni convection on flow instabilities in the presence thermal a Si-Ge liquid bridge with different aspect ratios As has been investigated by three-dimensional (3D) numerical simulations under zero gravity. We consider half-zone model between cold (top plane) and hot (bottom disks. highest Si concentration is top bridge. ratio (As) drastically affects critical numbers: number (under small numbers (MaTAs≲1800)) same dependence as (400≲MaCAs≲800)), i.e., it decreases increasing As. azimuthal wavenumber traveling wave mode increases decreasing As, larger wavenumbers (m=6,7,11,12, 13) appear for As=0.25, only m=2 appears when one larger. oscillatory modes hydro waves have extracted spatiotemporal structures using dynamic decomposition (DMD). present study suggests proper parameter region quiescent steady suitable crystal growth smaller