AM06-15-011 爆縮過程の膨張衝撃波 : 時間可逆なミクロな物理法則の視点から(空気力学・高エンタルピー流(2),一般講演)

概要

論文の詳細を見る
Why does not an expansion shock wave exist in nature? In order to resolve the question from a microscopic viewpoint, an implosion process dual to an explosion process was investigated by means of the molecular dynamics method. To this aim, we employed a 'bit-reversible algorithm (Bit MD)' which was completely time-reversible and was free from any round-off error. It is demonstrated that, through a dual implosion simulation (i.e., a time-reversible simulation of the explosion), the expansion shock wave is successfully formed in the Bit MD simulation. Furthermore, when the controlled noise is intentionally added to the Bit MD, the expansion shock wave disappears dramatically and turns into an isentropic expansion wave, even if the noise is extremely small.
日本流体力学会の論文
2006-09-05