A group of researchers has demonstrated the dissipation of energy in quantum turbulence, providing insights into turbulence across various scales, ranging from microscopic to planetary. Lancaster University's Dr. Samuli Autti collaborated with Aalto University researchers on a recent study invest
The team’s findings, published indemonstrate a new understanding of how wave-like motion transfers energy from macroscopic to microscopic length scales, and their results confirm a theoretical prediction about how the energy is dissipated at small scales.Quantum turbulence at large scales – such as turbulence around moving airplanes or ships – is difficult to simulate.
In the future, an improved understanding of turbulence beginning on the quantum level could allow for improved engineering in domains where the flow and behaviour of fluids and gases like water and air is a key question. “Understanding that in classical fluids will help us do things like improve the aerodynamics of vehicles, predict the weather with better, or control water flow in pipes. There is a huge number of potential real-world uses for understanding macroscopic turbulence.”“In experiments, the formation of quantum turbulence around a single vortex has remained elusive for decades despite an entire field of physicists working on quantum turbulence trying to find it.
The team of researchers, led by Senior Scientist Vladimir Eltsov, studied turbulence in the Helium-3 isotope in a unique, rotating ultra-low temperature refrigerator in the Low Temperature Laboratory at Aalto. They found that at microscopic scales so-called Kelvin waves act on individual vortices by continually pushing energy to smaller and smaller scales – ultimately leading to the scale at which dissipation of energy takes place.
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