Speaker
Description
In galactic and intergalactic environments, gas flows often exhibit relative motion between cold dense gas and a hot diffuse medium. These multiphase flows are often subject to large-scale turbulence. Such scenarios ubiquitously arise in the circumgalctic medium, such as in galactic winds, fountain flows, and filamentary accretion from the intergalactic medium. Turbulence plays a crucial role in (i) mediating the mixing among the different phase of gas, (ii) the compression of gas clouds, thereby triggering star formation, and (iii) affecting the transport of energy and momentum across the gas phases. Despite their intertwined role in galaxy formation and evolution, simulations are often limited to idealized scenarios where winds and turbulence are modelled separately. In this talk, I would present our recent work that simulates a realistic, turbulent wind interacting with cold and dense clouds. We build a consistent framwork where evolution of clouds in a turbulent wind is studied across a wide range of turbulent Mach numbers. I will demonstrate our new findings on the, hitherto unknown, critical parameters that dictate how turbulence can greatly enhance the growth or destruction of cold clouds seeded in galactic outflows.
