Mastodawn

A Supernova in Motion

In 1604, astronomers first caught sight of Kepler’s Supernova Remnant, a massive explosion some 17,000 light-years away. Twenty-five years of observations from the Chandra X-ray Observatory went into making this timelapse, which shows the supernova remnant‘s material pushing into the surrounding gas and dust.

In its fastest regions, the supernova remnant is moving around 2% of the speed of light–some 22 million kilometers per hour. Slower parts of the remnant are moving at just 0.5% of light-speed. (Image credit: NASA/CXC/SAO/Pan-STARRS; via Gizmodo)

#astrophysics #compressibleFlow #flowVisualization #fluidDynamics #physics #science #shockwave #supernova #turbulence

ScienceOpen Jun 25, 2025

'On the Comparative Analysis of Methods for Solving the Blasius Boundary Layer Problem of #CompressibleFlow' - a UnisaRxiv #Preprint #Research article open for review on #ScienceOpen:

🔗 https://www.scienceopen.com/hosted-document?doi=10.25159/UnisaRxiv/000114.v1

On the Comparative Analysis of Methods for Solving the Blasius Boundary Layer Problem of Compressible Flow

<p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="first" dir="auto" id="d262782e115">In this article, we present a comparative analysis of two numerical methods for solving the problem of the Blasius boundary layer. To enrich this analysis, a detailed comparison of the localised radial basis function methods using both polyharmonic splines and Gaussian functions with shooting methods provides insight into the strengths and weaknesses of these approaches. The Blasius problem is crucial to fluid mechanics as it models the flow over flat surfaces, which is relevant in various engineering applications such as aerodynamics. We applied both methods to determine the velocity and temperature profiles of a fluid over a flat plate, and compared the results for accuracy and computational efficiency. </p>

ScienceOpen