A versatile high-performance rotating facility for geophysical and astrophysical flows

Area of Science:

• Geophysics
• Astrophysics
• Fluid Dynamics
• Laboratory Simulation

Background:

• Geophysical and astrophysical phenomena often involve complex rotating fluid dynamics.
• Laboratory experiments require high-precision facilities to accurately simulate these phenomena.

Purpose of the Study:

• To design, implement, and validate a high-precision rotating facility for laboratory investigations.
• To create a versatile and extensible platform for studying rotating flows.

Main Methods:

• A modular rotating system with a stationary base, dual-bearing stabilized assembly, and servo-driven transmission.
• Achieved leveling accuracy better than 10-4 rad and vibration isolation.
• Tested rotation speeds from 0.1-80 rpm with 0.01 rpm precision.

Main Results:

• Demonstrated exceptional axis stability using a dual-bearing configuration.
• Validated the facility's versatility with particle image velocimetry in Rayleigh-Bénard convection and zonal jet formation experiments.
• Confirmed a static load capacity of 2 tons.

Conclusions:

• The developed rotating facility provides a robust platform for laboratory analogs of geophysical and astrophysical flows.
• Its modular and extensible design supports diverse experimental setups and future upgrades.
• Enables precise simulation of phenomena like convection and jet formation.