Oscillatory double-diffusive convection in a rectangular enclosure with combined horizontal temperature and concentration gradients

• Published in: International journal of heat and mass transfer Vol. 41; no. 11; pp. 1601 - 1611
• Main Authors: Nishimura, Tatsuo, Wakamatsu, Mikio, Morega, Alexandru M.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.06.1998; Elsevier
• Subjects: Binary mixtures; Buoyancy; Convection and heat transfer; Enclosures; Exact sciences and technology; Fluid dynamics; Fundamental areas of phenomenology (including applications); Hydrodynamic stability; Mass transfer; Mathematical models; Nonlinearity (including bifurcation theory); Oscillations; Physics; Thermal diffusion in gases; Turbulent flows, convection, and heat transfer; Temperature distribution; Convective instabilities; Streamlines; Thermohaline convection; Digital simulation; Bifurcation; Enclosure; Binary mixtures; Non linear stability; Oscillatory instability; Secondary flow; Heat transfer; Concentration distribution; Double diffusion

The effect of buoyancy ratio on the flow structure is investigated numerically for a binary mixture gas in a rectangular enclosure subject to opposing horizontal thermal and compositional buoyancies. The following conditions were considered: Ra T = 10 5, Pr = 1, Le = 2 and N = 0.0–2.0 for A = 2. The...