Dimensionless ratio of flow speed u to local sound speed c: Ma = u/c. Demarcates flow regimes: subsonic (Ma < 1), transonic (≈ 1), supersonic (> 1), hypersonic (> 5). Controls whether pressure disturbances can propagate upstream and…
Dimensionless ratio of flow speed u to local sound speed c: Ma = u/c. Demarcates flow regimes: subsonic (Ma < 1), transonic (≈ 1), supersonic (> 1), hypersonic (> 5). Controls whether pressure disturbances can propagate upstream and…