Positions

Overview

  • I lead the UNH Complicated Fluids group. We are interested in the basic physics of a wide array of fluid problems, including biophysical and geophysical flows. As the name implies, we solve complicated fluid dynamics: problems involving turbulence, phase changes, magnetic fields, traditional "complex" non-Newtonian fluids, or various combinations of them.
    In order to tackle this menagerie of problems, we contribute to and use the Dedalus Project, a flexible framework for solving partial differential equations.
    Prof. Oishi is one of the founders and core developers of Dedalus, and the other developers regularly visit and collaborate with our group.

    • Selected Publications

    Academic Article

    Year Title
    2025 On the linear stability of partially and fully saturated atmospheres to moist convection.  Journal of Fluid Mechanics.  1007. 2025
    2024 Ordering of time scales predicts applicability of quasilinear theory in unstable flows.  Journal of Fluid Mechanics.  998. 2024
    2024 The solar dynamo begins near the surface..  Nature.  629:769-772. 2024
    2023 Generalized quasi-linear approximation and non-normality in Taylor-Couette spiral turbulence..  Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences.  381:20220122. 2023
    2023 The photometric variability of massive stars due to gravity waves excited by core convection..  Nature Astronomy.  7:1228-1234. 2023
    2022 Direct statistical simulation of the Busse annulus.  Journal of Fluid Mechanics.  949. 2022
    2022 Convective Boundary Mixing Processes.  Research Notes of the AAS.  6:41-41. 2022
    2021 eigentools: A Python package for studying differential eigenvalue problems with an emphasis on robustness.  Journal of Open Source Software.  6:3079-3079. 2021
    2020 Single-hemisphere Dynamos in M-dwarf Stars.  Astrophysical Journal Letters.  902:L3-L3. 2020
    2020 The magnetorotational instability prefers three dimensions..  Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences.  476:20190622. 2020
    2019 Flow-Induced Symmetry Breaking in Growing Bacterial Biofilms..  Physical Review Letters.  123:258101. 2019
    2019 Tensor calculus in spherical coordinates using Jacobi polynomials. Part-I: Mathematical analysis and derivations.  Journal of Computational Physics: X.  3:100013-100013. 2019
    2019 Tensor calculus in spherical coordinates using Jacobi polynomials. Part-II: Implementation and examples.  Journal of Computational Physics: X.  3:100012-100012. 2019
    2019 Breezing through the Space Environment of Barnard’s Star b.  Astrophysical Journal Letters.  875:L12-L12. 2019
    2019 Predicting the Rossby Number in Convective Experiments.  The Astrophysical Journal (ApJ).  872:138-138. 2019
    2018 Generalized quasilinear approximation of the interaction of convection and mean flows in a thermal annulus.  Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences.  474. 2018
    2018 Convective Dynamics and Disequilibrium Chemistry in the Atmospheres of Giant Planets and Brown Dwarfs.  The Astrophysical Journal (ApJ).  854:8-8. 2018
    2017 The Weakly Nonlinear Magnetorotational Instability in a Global, Cylindrical Taylor–Couette Flow.  The Astrophysical Journal (ApJ).  841:2-2. 2017
    2017 The Weakly Nonlinear Magnetorotational Instability in a Local Geometry.  The Astrophysical Journal (ApJ).  841:1-1. 2017
    2017 Hybrid Adaptive Ray-Moment Method (HARM2): A highly parallel method for radiation hydrodynamics on adaptive grids.  Journal of Computational Physics.  330:924-942. 2017
    2016 TURBULENT CHEMICAL DIFFUSION IN CONVECTIVELY BOUNDED CARBON FLAMES.  The Astrophysical Journal (ApJ).  832:71-71. 2016
    2016 Tensor calculus in polar coordinates using Jacobi polynomials.  Journal of Computational Physics.  325:53-73. 2016
    2016 A validated non-linear Kelvin–Helmholtz benchmark for numerical hydrodynamics.  Monthly Notices of the Royal Astronomical Society.  455:4274-4288. 2016
    2015 Numerical simulations of internal wave generation by convection in water..  Physical Review E: Statistical, Nonlinear, and Soft Matter Physics.  91:063016. 2015
    2013 Methods for Simulating the Heavy Core Instability.  EPJ Web of Conferences.  46:06001-06001. 2013
    2012 MAGNETIC FIELDS IN POPULATION III STAR FORMATION.  The Astrophysical Journal (ApJ).  745:154-154. 2012
    2012 SIMULATING THE COMMON ENVELOPE PHASE OF A RED GIANT USING SMOOTHED-PARTICLE HYDRODYNAMICS AND UNIFORM-GRID CODES.  The Astrophysical Journal (ApJ).  744:52-52. 2012
    2011 MAGNETOROTATIONAL TURBULENCE TRANSPORTS ANGULAR MOMENTUM IN STRATIFIED DISKS WITH LOW MAGNETIC PRANDTL NUMBER BUT MAGNETIC REYNOLDS NUMBER ABOVE A CRITICAL VALUE.  The Astrophysical Journal (ApJ).  740:18-18. 2011
    2011 How Common Envelope Interactions Change the Lives of Stars and Planets.  Proceedings of the International Astronomical Union.  7:517-520. 2011
    2011 yt: A MULTI-CODE ANALYSIS TOOLKIT FOR ASTROPHYSICAL SIMULATION DATA.  Astrophysical Journal Supplement Series.  192:9-9. 2011
    2010 ON THE STABILITY OF DUST-LADEN PROTOPLANETARY VORTICES.  The Astrophysical Journal (ApJ).  721:1593-1602. 2010
    2009 ON HYDRODYNAMIC MOTIONS IN DEAD ZONES.  The Astrophysical Journal (ApJ).  704:1239-1250. 2009
    2008 A Constrained‐Transport Magnetohydrodynamics Algorithm with Near‐Spectral Resolution.  The Astrophysical Journal (ApJ).  677:520-529. 2008
    2007 Turbulent Torques on Protoplanets in a Dead Zone.  The Astrophysical Journal (ApJ).  670:805-819. 2007
    2007 Dynamical Expansion of HiiRegions from Ultracompact to Compact Sizes in Turbulent, Self‐gravitating Molecular Clouds.  The Astrophysical Journal (ApJ).  668:980-992. 2007
    2007 Rapid planetesimal formation in turbulent circumstellar disks..  Nature.  448:1022-1025. 2007
    2006 The Inability of Ambipolar Diffusion to Set a Characteristic Mass Scale in Molecular Clouds.  The Astrophysical Journal (ApJ).  638:281-285. 2006
    2003 Cassiopeia A and Its Clumpy Presupernova Wind.  The Astrophysical Journal (ApJ).  593:L23-L26. 2003
    Accelerated evolution of convective simulations.  Physical Review Fluids.  3.
    CONDUCTION IN LOW MACH NUMBER FLOWS. I. LINEAR AND WEAKLY NONLINEAR REGIMES.  The Astrophysical Journal (ApJ).  797:94-94.
    Dedalus: A flexible framework for numerical simulations with spectral methods.  Physical Review Research.  2.
    ENZO: AN ADAPTIVE MESH REFINEMENT CODE FOR ASTROPHYSICS.  Astrophysical Journal Supplement Series.  211:19-19.
    Force balances in strong-field magnetoconvection simulations.  Physical Review Fluids.  8.
    SELF-GENERATED TURBULENCE IN MAGNETIC RECONNECTION.  Astrophysical Journal Letters.  806:L12-L12.

    Conference Paper

    Year Title
    2012 Magnetic fields and angular momentum in population III star formation.  AIP Conference Proceedings. 77-80. 2012
    2012 Turbulence and small scale dynamo action in population III star formation.  AIP Conference Proceedings. 87-90. 2012
    2011 The Physics of Partially Ionized Gas with Applications to Processes in the Interstellar Medium.  AIP Conference Proceedings. 115-121. 2011
    2010 Numerical Methods for Radiative Feedback from the First Stars: Ionization in Adaptive Mesh Refinement Simulations.  AIP Conference Proceedings. 270-271. 2010

    Teaching Activities

  • Special Topics Taught course 2024

    • Education And Training

  • Ph.D. Astronomy, University of Virginia

    • Full Name

  • Jeff Oishi