hedp papers students

first void collapse papers out

Experimental and simulated XPCI of void collapse
Figure 6 from Hodge et al., comparing the experimental XPCI images with simulated ones.

Our collaborator, Arianna Gleason (SLAC), has been leading a campaign on ultrafast imaging of the collapse of small voids. Small voids are found as material defects in ablator layer of inertial confinement fusion (ICF) targets, and they hydrodynamically interfere with the convergence of the target so the fuel doesn’t get up to the desired pressure and density. However, since it happens so fast, it’s really hard to see this shock-void interaction detail — enter LCLS + ultrafast x-ray imaging.

The campaign just produced its first papers: Silvia Pandolfi, a postdoc at Stanford, just published a paper on the target fab process for the campaign (Review of Scientific Instruments), and Daniel Hodge, a grad student at BYU, just published a paper about the imaging and the post-processing (Optics Express). Congrats to them both! You can find Kelin’s xRAGE simulations and synthetic PCI images in Daniel’s paper.

award biomechanics brain positions

Jessica is awarded NSF CAREER

This was actually awarded in December 2021, but the University press release is officially out! We are excited to continue working on reduced-order model development to simulate coupling between the arterial and perivascular spaces, and work with the Kearns Center on the educational mission. Congratulations also to our colleagues — a great showing for U of R!

As a result, we are seeking one or two graduate students to work with Brennen on modeling and validation with clinical data. See our Opportunities page for details.

award hedp students

Nitish wins a Horton Fellowship

nitish acharyaThe Frank J. Horton Graduate Research Fellowships are awarded to U of R students whose research supports the program at the Laboratory for Laser Energetics (LLE). Nitish has been working with Hussein and myself on a number of high energy density flow problems, and is PI on a pilot experimental campaign on OMEGA-EP to measure viscosity in fused silica. He also recently published a paper on shock-particle interactions on a stiff-gas method to approximate solid-like resistance of compressible particles, since material strength models are difficult to implement in rad-hydro codes. Well-deserved for Nitish. Congrats!

alumni award students

congratulations to our graduating seniors

A fond farewell and best wishes to our seniors, Umar, Savannah, and Charles, as they take on the next stage of their careers! Umar and Charles are heading to gainful employment, at Applied Materials and ASML, respectively. Savannah is headed to Boston, starting a PhD in MechE at Boston University. It certainly hasn’t been easy, with so much of their undergraduate experience marked by COVID, but they persevered. Come back and say hello during Mel Weekend sometime, but also send me a postcard to decorate my bulletin board.

Also, a belated congratulations to alumni Caroline Cardinale ’21 at Caltech, who recently won a prestigious NSF Graduate Research Fellowship!

If you haven’t noticed, I started a Google Maps over on the People page to keep track of where our alumni go. If you have an update, please message me!

alumni award press students

scholarships and fellowships

It’s been a while, hasn’t it? Amidst the COVID crisis, we have some good news — Caroline Cardinale ’20, who has been with our lab group for a while, won an Astronaut Scholarship, given to juniors and seniors in STEM who intend to pursue research in higher education. This year, 56 scholarships were awarded nationwide. The Astronaut Scholarship Foundation was founded by the Mercury 7 astronauts, the very first — a wonderful legacy beyond their already historical contributions. Leo Liu ’19, who is starting his second year as a PhD student at University of Virginia with Dan Quinn, won a Link Foundation Ocean Engineering and Instrumentation Ph.D. Fellowship to continue his research on batoid-inspired hydrodynamics. We’re very proud of our current and past students!



opening in bluff-body flows

Seeking a motivated undergraduate or graduate student to conduct research in bluff body flows at low to moderate Reynolds number. Experience with machining and fabrication strongly preferred; experience with particle image velocimetry (PIV) optional. If interested, please send me an email expressing your interest, with a resume/CV and two names of potential references.

alumni superhydrophobic

Jeong-Hyun to join Seoultech

Jeong-Hyun was a postdoc in our group and recently accepted a faculty position at Seoul National University of Science and Technology, aka Seoultech. I can’t think of anyone who deserves this more! Excited to see Jeong-Hyun’s career prosper and grow in his new position.


LBS shot kickoff

Yesterday we kicked off XPIV platform development on OMEGA-EP with Laboratory for Basic Science (LBS) experiments headed by Arianna Gleason (SLAC) and Danae Polsin (LLE). It was a long day with exciting and puzzling twists and turns. We learned a lot, and are looking forward to our LBS shots in the next fiscal year! Big thanks to the grad students who turned out to help and to LLE shot ops for a successful day. Supported by DOE and NNSA.

students summer

comings and goings

Summer brings changes. Congratulations to Deok-Hoon, Jack, and Leo on graduating from our Mechanical Engineering program! Deok-Hoon and Leo will be joining PhD programs at UC-Santa Barbara and University of Virginia in the fall, respectively. We’ll be seeing them at future APS DFD meetings, most likely! Jack is joining the workforce at L3 Harris Technologies.

We’re sad to see them leave the nest, but a hearty welcome to Nitish and Brennen, who successfully completed their first year of graduate school, and sweated through first-year exams. Now they get to dive deep into research… the fun part!


conference students

NCUR ’19!

Amro and Deok-Hoon headed off for warmer latitudes these past few days, presenting their poster on wind turbine array optimization at NCUR ’19. They had a great time, and took advantage of a little sightseeing in Atlanta via scooter-share 🙂