Mach number
- In fluid dynamics, the Mach number (M or Ma) (; German: [max]) is a dimensionless quantity representing the ratio of flow velocity past a boundary to the local speed of sound.
In the following, a new nondimensional-velocity ratio, namely the critical-velocity ratio (or critical Mach number), will be derived not only to achieve this objective but also to be a tool..查看文章
This is a composite which combines gas temperature (as the color) and shock mach number (as the brightness). Red indicates 10 million Kelvin gas at the centers of massive galaxy clusters, wh..查看文章
New York Oceanic ATC is reporting “very low compliance” with a May 3 notam that now requires filing Mach number instead of knots true airspeed in international flight plans, according to the..查看文章
Book chapters will be unavailable on Saturday 24th August between 8am-12pm BST. This is for essential maintenance which will provide improved performance going forwards. Please accept our ap..查看文章
A spherical lead bullet of 6mm diameter is moving at a Mach number of 3. The resulting shock wave heats the air around the bullet to 700 K, and the average convection coefficient between the..查看文章
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