Faculty Directory

Daniel Lecoanet

Assistant Professor of Engineering Sciences and Applied Mathematics

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Daniel Lecoanet's Research

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Centers

Center for Interdisciplinary Exploration and Research in Astrophysics

Departments

Engineering Sciences and Applied Mathematics

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Research Interests

I am interested in astrophysical and geophysical fluid dynamics, and in developing numerical methods for solving problems in these fields I primarily study low-Mach number flows inside stars; in planetary atmospheres; in the oceans; and in planetary cores Each of these problems has a rich interplay between different fundamental physical effects: rotation, buoyancy, magnetism, moisture, external forcing, etc

I am a core developer of the Dedalus code. Dedalus can solve nearly arbitrary partial differential equations using spectral methods. We have recently extended Dedalus to run simulations in simple geometries which include coordinate singularities: spherical geometry and cylindrical geometry. This makes use of a new class of weighted Jacobi polynomials to represent tensorial quantities with the appropriate geometry regularity behavior. I am using these new capabilities to study global models of stars and planetary interiors (spherical geometry), as well as laboratory experiments (cylindrical geometry).

Selected Publications

• Lecoanet, Daniel; Edelmann, Philipp V.F., Multidimensional Simulations of Core Convection, Galaxies (2023).
• Ji, Suoqing; Fuller, Jim; Lecoanet, Daniel, Magnetohydrodynamic simulations of the Tayler instability in rotating stellar interiors, Monthly Notices of the Royal Astronomical Society (2023).
• Kaufman, Emma; Lecoanet, Daniel; Anders, Evan H.; Brown, Benjamin P.; Vasil, Geoffrey M.; Oishi, Jeffrey S.; Burns, Keaton J., The stability of Prendergast magnetic fields, Monthly Notices of the Royal Astronomical Society (2022).
• Jermyn, Adam S.; Anders, Evan H.; Lecoanet, Daniel; Cantiello, Matteo, An Atlas of Convection in Main-sequence Stars, Astrophysical Journal, Supplement Series (2022).
• Lecoanet, Daniel; Bowman, Dominic M.; Van Reeth, Timothy, Asteroseismic inference of the near-core magnetic field strength in the main-sequence B star HD 43317, Monthly Notices of the Royal Astronomical Society: Letters (2022).
• Jermyn, Adam S.; Anders, Evan H.; Lecoanet, Daniel; Cantiello, Matteo, Convective Penetration in Early-type Stars, Astrophysical Journal (2022).
• Anders, Evan H.; Jermyn, Adam S.; Lecoanet, Daniel; Fraser, Adrian E.; Cresswell, Imogen G.; Joyce, Meridith; Fuentes, J. R., Schwarzschild and Ledoux are Equivalent on Evolutionary Timescales, Astrophysical Journal Letters (2022).
• Anders, Evan H.; Jermyn, Adam S.; Lecoanet, Daniel; Brown, Benjamin P., Stellar Convective Penetration, Astrophysical Journal (2022).