7 papers
Universal transport laws in buoyancy-driven porous mixing
Marco De Paoli, Xiaojue Zhu
Buoyancy-driven convection in porous media governs heat and mass transport in a wide range of natural and engineered systems, from groundwater aquifers and geothermal reservoirs to…
Vortex-magnetic competition and regime transitions in antiparallel flux tubes
Weiyu Shen, Rodolfo Ostilla-Mónico, Xiaojue Zhu
Vortex-magnetic interactions shape magnetohydrodynamic (MHD) turbulence, influencing energy transfer in astrophysical, geophysical, and industrial systems. On the Sun, granular-sca…
Latitudinal dependence of heat transport in turbulent geostrophic convection
Veeraraghavan Kannan, Varghese Mathai, Xiaojue Zhu
Latitudinal variations in turbulent heat flux play a key role in the thermal and magnetic evolution of rapidly rotating planets and stars. Although global spherical-shell simulatio…
Flapping dynamics of a compliant membrane in a uniform incoming flow
Chengyao Zhang, Ankang Gao, Xiaojue Zhu
Recent theoretical and experimental investigations have revealed that flapping compliant membrane wings can significantly enhance propulsive performance (e.g. Tzezana and Breuer, 2…
Reinforcement-learning-based control of turbulent channel flows at high Reynolds numbers
Zisong Zhou, Mengqi Zhang, Xiaojue Zhu
Deep reinforcement learning (DRL) is employed to develop control strategies for drag reduction in direct numerical simulations (DNS) of turbulent channel flows at high Reynolds num…
Linear instability in thermally-stratified quasi-Keplerian flows
Dongdong Wan, Rikhi Bose, Mengqi Zhang +1
Quasi-Keplerian flow, a special regime of Taylor-Couette co-rotating flow, is of great astrophysical interest for studying angular momentum transport in accretion disks. The well-k…