We are currently searching for evidence of ECS in 3D turbulence. The specific system we study is known as “Taylor-Couette flow,” which refers to the flow of a fluid in the gap between two concentric cylinders. Taylor-Couette flow has been studied for decades and is known to exhibit a myriad of different flow regimes for various flow parameters.
Specifically, we study Taylor-Couette flow at a low aspect ratio (domain height / gap width), and measure the flow using tomographic particle image velocimetry (Tomo-PIV). Tomo-PIV is a state-of-the-art technology in which 3D velocity fields are resolved in space and time. The setup is shown below.
We compare our Tomo-PIV measurements to simulations generated by Roman Grigoriev’s Dynamics and Control Group.