Liquid-Liquid Mixing Due to G-Jitter in Microgravity

This paper describes a study of double diffusive convection inside a rectangular cavity in low gravity; it arose out of a much broader study of solidification of a binary alloy in microgravity. The cavity initially contained two different but miscible liquids meeting at a sharp vertical interface at the middle of a cavity. One vertical wall was kept at a uniform low temperature, while the opposite wall was at a uniform higher temperature. The top and bottom walls were adiabatic. All walls were impermeable. A numerical simulation was made of the induced convection and mixing for a range of values of buoyancy ratio and gravity characteristics, including both steady g and g-jitter.