Investigation of vibrational control of convective flows in Bridgman melt growth configurations

• Published in: Journal of crystal growth Vol. 211; no. 1; pp. 34 - 42
• Main Authors: Fedoseyev, Alexandre I, Alexander, J.Iwan D
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.04.2000; Elsevier
• Subjects: Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Flow control; g-jitter; Growth from melts; zone melting and refining; Materials science; Methods of crystal growth; physics of crystal growth; Physics; Theory and models of crystal growth; physics of crystal growth, crystal morphology and orientation; Thermal vibrational flow; Thermal vibrational flow; 81.10.Aj; Flow control; g-jitter; 81.10.Mx; Vibrations; Flow(fluid); Process control; Theoretical study; Modelling; Numerical method; Convection; Bridgman method; Crystal growth from melts
• ISSN: 0022-0248; 1873-5002
• DOI: 10.1016/S0022-0248(99)00839-8

It is generally recognized that oscillatory, or pulsatile, flow significantly alters the transfer of mass, heat and momentum in fluid systems. A numerical investigation of thermovibrational buoyancy-driven flow in differentially heated cylindrical containers is presented as part of a study of thermovibrational transport regimes in Bridgman-type systems. The formulation of a physical and mathematical model for this problem is outlined and its application to the study of investigation of thermal vibrational flows is discussed. Three types of vibration are considered: translational, circularly polarized and rotational. It is demonstrated that forced vibration can significantly affect flows that have been induced by g-jitter and selected results for the cases of longitudinal and lateral vibrations are presented.