Pascale Garaud is an applied mathematician and astrophysicist whose work connects fluid dynamics, turbulence and the evolution of stars. Her institutional biography identifies research on stellar flows, magnetohydrodynamics and double-diffusive convection, using both analytical and computational methods.[ref]
https://campusdirectory.ucsc.edu/cd_detail?uid=pgaraud. UC Santa Cruz, Pascale Garaud, biography and research interests
With collaborators, she developed a model for mixing by fingering convection and tested it against three-dimensional direct numerical simulations. A stellar layer can resist ordinary overturning while still mixing because heat and composition diffuse at different rates. Predicting the resulting transport matters when a one-dimensional stellar calculation cannot resolve the individual turbulent motions.[ref]
Chemical Transport and Spontaneous Layer Formation in Fingering Convection in Astrophysics by Justin M. Brown and others. Abstract: theory, simulation support and implementation in stellar codes
Her lecture notes explain how competing thermal and compositional density effects lead to double-diffusive convection. The connection is scientifically useful: a process familiar from salt water becomes relevant to material redistribution inside stars, with very different diffusivity ratios.[ref]
Double-diffusive processes in stellar astrophysics by Pascale Garaud. Section 2.2.1, linear fingering instability and density-ratio interval
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Pascale Garaud is an astrophysicist known for her research in fields such as stellar astrophysics, planetary science, and geophysics. She has worked on topics related to the dynamics of stars and planets, including their internal structures and atmospheres. Garaud is also noted for her contributions to the understanding of various astrophysical phenomena, often employing computational methods in her research.