2+ week, 18+ hour ago   (367+ words) This study examines drag and outer-layer similarity in a rough-wall channel with spanwise-uniform bars at pitch-to-height ratios 6, 12 and 24, using direct numerical simulations at. The quiescent core (QC) is detected via kernel density estimation of the streamwise velocity probability density function…...

2+ week, 4+ day ago   (38+ words) Fluid simulations are one of the "killer apps" of high-performance computing, but if you can't afford the performance, they can take a depressingly long time to run. Depending on your use case, as lon......

3+ week, 2+ day ago   (323+ words) Solving the shallow-water equations (SWEs) using the lattice Boltzmann method (LBM) can be computationally expensive on uniform grids. Here we develop a quadtree-based adaptive mesh refinement framework that preserves the Cartesian grid structure while enabling local refinement. A cell-centred data…...

5+ mon, 3+ week ago   (288+ words) The ESA is on the case, investigating a fireball that streaked across the skies in Europe, causing damage to a German home. This event raises questions about the nature of space debris and the potential risks it poses to our…...

5+ mon, 3+ week ago   (259+ words) This week in science, we've got a lot to unpack, from cosmic phenomena to biological marvels and potential health risks. Let's dive into some of the most intriguing discoveries and their implications. A popular anti-aging supplement may fuel cancer growth…...