56 citations · 172 across the 10 of their papers we have counts for
10 papers
Real-Time XFEL Data Analysis at SLAC and NERSC: a Trial Run of Nascent Exascale Experimental Data Analysis
Johannes P. Blaschke, Aaron S. Brewster, Daniel W. Paley +7
X-ray scattering experiments using Free Electron Lasers (XFELs) are a powerful tool to determine the molecular structure and function of unknown samples (such as COVID-19 viral pro…
cuFINUFFT: a load-balanced GPU library for general-purpose nonuniform FFTs
Yu-hsuan Shih, Garrett Wright, Joakim Andén +2
Nonuniform fast Fourier transforms dominate the computational cost in many applications including image reconstruction and signal processing. We thus present a general-purpose GPU-…
Accelerating GMRES with Deep Learning in Real-Time
Kevin Luna, Katherine Klymko, Johannes P. Blaschke
GMRES is a powerful numerical solver used to find solutions to extremely large systems of linear equations. These systems of equations appear in many applications in science and en…
Benchmarking of a preliminary MFiX-Exa code
William D. Fullmer, Ann S. Almgren, Michele Rosso +2
MFiX-Exa is a new code being actively developed at Lawrence Berkeley National Laboratory and the National Energy Technology Laboratory as part of the U.S. Department of Energy's Ex…
Gravity-induced dynamics of a squirmer microswimmer in wall proximity
Felix Rühle, Johannes Blaschke, Jan-Timm Kuhr +1
We perform hydrodynamic simulations using the method of multi-particle collision dynamics and a theoretical analysis to study a single squirmer microswimmer at high Péclet number,…
Collective Sedimentation of Squirmers under Gravity
Jan-Timm Kuhr, Johannes Blaschke, Felix Rühle +1
Active particles, which interact hydrodynamically, display a remarkable variety of emergent collective phenomena. We use squirmers to model spherical microswimmers and explore the…
Phase Separation and Coexistence of Hydrodynamically Interacting Microswimmers
Johannes Blaschke, Maurice Maurer, Karthik Menon +2
A striking feature of the collective behavior of spherical microswimmers is that for sufficiently strong self-propulsion they phase-separate into a dense cluster coexisting with a…
Granular Brownian Motors: role of gas anisotropy and inelasticity
Johannes Blaschke, Jürgen Vollmer
We investigate the motion of a wedge-shaped object (a granular Brownian motor), which is restricted to move along the x-axis and cannot rotate, as gas particles collide with it. We…
Arrest of three-dimensional gravity-confined shear flow of wet granular matter
Klaus Roeller, Johannes Blaschke, Stephan Herminghaus +1
We study the arrest of three-dimensional flow in wet granular matter subject to a sinusoidal external force and a gravitational field confining the flow in the vertical direction.…
Breath Figures: Nucleation, Growth, Coalescence, and the Size Distribution of Droplets
Johannes Blaschke, Tobias Lapp, Björn Hof +1
The analysis of the size distribution of droplets condensing on a substrate (breath figures) is a test ground for scaling theories. Here, we show that a faithful description of the…