Visit us at: http://www-personal.umich.edu/~ejohnsen Follow us at: http://twitter.com/JohnsenSCFPL 2019 Newsletter — Scientific Computing and Flow Physics Laboratory SCFPL this Year PhD Students: Eunhye An, Griffin Cearley, Sonya Dick, Philip Johnson, Minki Kim, Nick Lucido, Kevin Ma, Lauren Mancia, Kazuya Murakami, Samuel Pellone, Suyash Tandon, Michael Wadas MS Students: Sahil Bhola, Sandra Edward, Susmit Joshi, Mizuho Takayama UG Students: Joseph Delaney, Eric Hersey, Anish Rao, Chun So, Rohan Wagle, William White Post-docs: Shahab Beig, Chiwon Kim, Mauro Rodriguez Admin: Diane Brouwer, Karen Brown PI: Eric Johnsen Research Highlights • Cavitation. Using high-resolution simulations, we are developing a theory for the dynamics and energetics of individual bubbles inertially collapsing in a free field and near walls. We are also using reduced models to investigate cavitation in soft matter, including nucleation, damage, and departures from sphericity. • High-energy-density physics. We are using theory and computation to investigate the dynamics of shocks and accelerated interfaces. We are also studying thermal transport of laser-irradiated materials and the radiation- hydrodynamics of x-ray-driven materials. • Turbulence. We are investigating mixing at steep gradients in turbulence intensity, as well as the role of passive vortex generators in a turbulent boundary layer on the modulation of separated regions downstream of a ramp. • Scientific Computing. We are developing high-order accurate, Discontinuous Galerkin methods for high-fidelity simulations of the compressible Navier-Stokes equations. With this framework we are exploring strategies for exascale computing to address faults and data movement. This past year, articles with contributions from our group appeared in J Comput Phys, Phys Med Biol, Shock Waves, Phys Rev E, J Phys D: Appl Phys. Notable findings from the group’s papers include a better understanding of cavitation-induced tissue damage, as well as a numerical method for shock waves in viscoelastic media and a new high-order discontinuous Galerkin method for diffusion problems. The group had good representation at the APS- DPP and APS-DFD meetings, and also presented at AVIATION, ISTU, ICMF, PACAM, APSA, and laser user group meetings (NIF/JLF, Omega). This year, we started new projects on vorticity dynamics of accelerated interfaces in HEDP (supported by LANL), and cavitation-bubble dynamics in laser/acoustic cavitation for biomedical applications (supported by a biomedical company). We take this opportunity to acknowledge the invaluable contributions from our research collaborators this past year: C. Franck (Wisconsin), D. Henann (Brown), T. Colonius (Caltech), K. Ando (Keio U.), J. P. Franc, M. Fivel (U. Grenoble), H. Hoffmann (U. Chicago), C. Barbier (ORNL), M. Patel, M. Millot (LLNL), C. Di Stefano (LANL), H.T. Huynh (NASA Glenn), D. Massimini (BSC), S. Ceccio, R. P. Drake, J. B. Fowlkes, C. Kuranz, M. Kushner, K. Maki, K. Powell, Z. Xu, N. Yousefi (U-M), as well as former group members R. Gaudron (Imperial College)
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Visit us at: http://www-personal.umich.edu/~ejohnsen Follow us at: http://twitter.com/JohnsenSCFPL
2019 Newsletter — Scientific Computing and Flow Physics Laboratory
SCFPL this Year
PhD Students: Eunhye An, Griffin Cearley, Sonya Dick, Philip Johnson, Minki Kim, Nick Lucido, Kevin Ma, Lauren Mancia, Kazuya Murakami, Samuel Pellone, Suyash Tandon, Michael Wadas
MS Students: Sahil Bhola, Sandra Edward, Susmit Joshi, Mizuho Takayama UG Students: Joseph Delaney, Eric Hersey, Anish Rao, Chun So, Rohan Wagle, William White Post-docs: Shahab Beig, Chiwon Kim, Mauro Rodriguez Admin: Diane Brouwer, Karen Brown PI: Eric Johnsen
Research Highlights
• Cavitation. Using high-resolution simulations, we are developing a theory for the dynamics and energetics of individual bubbles inertially collapsing in a free field and near walls. We are also using reduced models to investigate cavitation in soft matter, including nucleation, damage, and departures from sphericity.
• High-energy-density physics. We are using theory and computation to investigate the dynamics of shocks and accelerated interfaces. We are also studying thermal transport of laser-irradiated materials and the radiation-hydrodynamics of x-ray-driven materials.
• Turbulence. We are investigating mixing at steep gradients in turbulence intensity, as well as the role of passive vortex generators in a turbulent boundary layer on the modulation of separated regions downstream of a ramp.
• Scientific Computing. We are developing high-order accurate, Discontinuous Galerkin methods for high-fidelity simulations of the compressible Navier-Stokes equations. With this framework we are exploring strategies for exascale computing to address faults and data movement.
This past year, articles with contributions from our group appeared in J Comput Phys, Phys Med Biol, Shock Waves, Phys Rev E, J Phys D: Appl Phys. Notable findings from the group’s papers include a better understanding of cavitation-induced tissue damage, as well as a numerical method for shock waves in viscoelastic media and a new high-order discontinuous Galerkin method for diffusion problems. The group had good representation at the APS-DPP and APS-DFD meetings, and also presented at AVIATION, ISTU, ICMF, PACAM, APSA, and laser user group meetings (NIF/JLF, Omega).
This year, we started new projects on vorticity dynamics of accelerated interfaces in HEDP (supported by LANL), and cavitation-bubble dynamics in laser/acoustic cavitation for biomedical applications (supported by a biomedical company).
We take this opportunity to acknowledge the invaluable contributions from our research collaborators this past year: C. Franck (Wisconsin), D. Henann (Brown), T. Colonius (Caltech), K. Ando (Keio U.), J. P. Franc, M. Fivel (U. Grenoble), H. Hoffmann (U. Chicago), C. Barbier (ORNL), M. Patel, M. Millot (LLNL), C. Di Stefano (LANL), H.T. Huynh (NASA Glenn), D. Massimini (BSC), S. Ceccio, R. P. Drake, J. B. Fowlkes, C. Kuranz, M. Kushner, K. Maki, K. Powell, Z. Xu, N. Yousefi (U-M), as well as former group members R. Gaudron (Imperial College)
and M. Henry de Frahan (NREL). We are also grateful to our sponsors for their support: ONR, DOE, NSF, NIH, LLNL, LANL, ORNL, BSC, and MICDE, as well as ALCF, OLCF, Blue Waters and XSEDE for computing resources.
Group Happenings
Welcome to this year’s new members to the group:
- PhD students Sonya Dick and Nick Lucido (Fall 2019)
- MS students Sahil Bhola and Mizuho Takayama (Fall 2019)
- UROP students Joseph Delaney and Rohan Wagle (Fall 2019)
- Undergraduate student William White (Spring 2019) - Post-doctoral scholar Chiwon Kim (end of 2019)
Congratulations to Philip Johnson for defending his PhD this spring! He joined Lockheed Martin shortly thereafter.
This summer, Michael Wadas completed his practicum on theory/modeling for shock strengthening at LLNL with Marius Millot, while Suyash Tandon spent the summer at LANL working on exascale computing algorithms. Sam Pellone attended the HED Summer School at UCSD, and Lauren Mancia and Minki Kim attended the Cavitation and Multi-Phase Flows Workshop in Crete.
Congratulations!
The group had a prolific year in terms of awards, congratulations to:
- Sonya Dick (NSF Graduate Research Fellowship) - Philip Johnson (2nd place at the CFD Student Paper Competition at AVIATION 2019) - Michael Wadas (best poster award at the LLNL Summer Student Poster Symposium) - Griffin Cearley and Kevin Ma (student poster awards at the OLUG meeting) - Lauren Mancia (Rackham Predoctoral Fellowship) - Eric Hersey (UROP Blue Ribbon Award) - Anish Rao (best poster award at the MEUS)
Alumni News
• After receiving Ford Foundation and AGEP post-doctoral fellowships, Mauro Rodriguez started a post-doctoral research position at Caltech this past summer.
• Siddhesh Shinde is now Lead Data Scientist at Aptiv and came back to campus for one day to judge the Towner session at the Engineering Research Symposium.
• Susmit Joshi started his PhD at Virginia Tech.
To all SCFPL alumni and friends: please stay in touch!
Other Newsworthy Items
Our group coordinated fluid-mechanics-based demos with Ms. Frantom’s class at Tappan Middle School. At the APS-DPP meeting, Griffin Cearley and Michael Wadas conducted fluids demos at the MIPSE booth for the Introduction to Plasma Science Expo.
We are planning on holding our next SCFPL Symposium on Saturday March 21, 2020, at the University of Michigan. More details to follow!
Selected artwork from this year’s papers (Lauren Mancia, Philip Johnson, Mauro Rodriguez).
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