Thermofluids engineering, Magnetohydrodynamics (MHD) and its applications (e.g. liquid metal battery, continuous casting of steel, aluminum reduction cells, vaccum arc remelting, electromagnetic propulsion, flow in the Earth's outer core); Rotating, Buoyancy-driven and Geophysical flows; Internal waves in Fluids (e.g. generation and propagation of inertial waves and internal gravity waves); Rotating flows in engines, turbines and compressors; Direct numerical simulations of turbulent flows - effect of rotation, buoyancy and magnetic field; Turbulent transport of particles More here.