Work

On the influence of the heat transfer at the free surface of a thermally driven rotating annulus

Year: 2025

Type: article

Abstract: Experiments on rotating annuli that are differentially heated in the radial direction have largely contributed to a better understanding of baroclinic instabilities. This configuration creates waves at a laboratory scale that are related to atmospheric circulations. Pioneer studies in baroclinic tanks have shown that experiments with low aspect ratios are more suitable to reproduce small-scale inertia gravity waves, but these tanks have a larger free surface, which leads to higher interactions with their surrounding environment. Considering the heat transferred through the free surface, the present work investigates its impacts on the baroclinic instability using direct numerical simulations (DNS).

Source: Physics of Fluids

DOI: 10.1063/5.0248712

Authors: Gabriel Meletti, Stéphane Abide, Uwe Harlander, Isabelle Raspo, Stéphane Viazzo