Alexei Y. Poludnenko hat die chemischen Vorgänge während Explosionen untersucht, wenn Flammen durch eigene Turbulenzen auf Ultraschallgeschwindigkeit beschleunigen und die Detonation auslösen. Das Prinzip gilt laut Paper für alle Explosionen, von denen in den Zylindern des Automotors bis hin zu Supernovae und dem Urknall. Bild rechts: „Shock interaction with an idealized turbulent thermonuclear flame and the resulting DDT [deflagration-to-detonation transition].“
Paper: A unified mechanism for unconfined deflagration-to-detonation transition in terrestrial chemical systems and type Ia supernovae
LiveScience: Unified Laws of Explosion Link Your Car’s Engine to the Big Bang
According to the authors of the new study, published Thursday (Oct. 31) in the journal Science, every explosion in the cosmos — whether it’s a star going supernova or the last drop of gasoline combusting in your car’s engine — follows a similar set of rules. […] after studying a series of controlled chemical explosions in their lab, the study authors said they’ve figured out a “unified mechanism” of unconfined explosions that links the smallest and largest blasts in the universe.
The key, the team found, is turbulence; with enough turbulence roiling a flame, large amounts of pressure can build up, until the flame releases a shock wave that sparks an explosion. This discovery could be a critical tool in understanding exactly how supernovas occur and might even give scientists a clue as to how the Big Bang spontaneously evolved from a nub of matter into the universe as we know it, the researchers said.