local speed of sound

Mach number is given as a percentage compared to the local speed of sound.

The energy release re-accelerates the flow back to the local speed of sound.

Explosive velocities are always faster than the local speed of sound in the material.

To produce a shock wave, an object in a given medium (such as air or water) must travel faster than the local speed of sound.

Each part of the wave travels at the local speed of sound, in the local medium.

According to my calculation (which does have some assumptions in there) he will be going faster than the local speed of sound for about 1 minute.

From the motion of the clouds we discovered fierce winds, approaching the local speed of sound.

When a wave moves faster than the local speed of sound in a fluid it is a shock wave.

At the point where the density drops, the local speed of sound correspondingly drops and a shock wave can form.

Temperature variations in different parts of the pipe cause reflections and changes in the local speed of sound.

Subsonic flows are flow fields in which air velocity throughout the entire flow is below the local speed of sound.

Observations made from Mariner 9 imply that the winds on Mars at least occasionally exceed half the local speed of sound.

The local speed of sound, and thereby the Mach number, depends on the condition of the surrounding medium, in particular the temperature and pressure.

The velocity of the gas is denoted by u, pressure by p, and the local speed of sound by a.

The term Transonic refers to a range of flow velocities just below and above the local speed of sound (generally taken as Mach 0.8-1.2).

A0360 Acoustic thermometer Thermometer whose principle is based on the variations of the local speed of sound caused by changes in temperature.

As the pressure ratio gets to about 2, the flow through the nozzle will approach the local speed of sound, and the flow becomes choked flow.

Mach number - A dimensionless quantity representing the ratio of speed of an object moving through a fluid and the local speed of sound.

A rapid drop in air density caused by reductions in aircraft contours, will cause a drop in the local speed of sound and shock waves may form.

The limiting case of the Venturi effect is when a fluid reaches the state of choked flow, where the fluid velocity approaches the local speed of sound.

By extension, the acoustic approximation also guarantees that an acoustic wave travels at a speed exactly equal to the local speed of sound, such that the Mach number:

Although "subsonic" and "supersonic" usually refer to speeds below and above the local speed of sound respectively, aerodynamicists often use these terms to refer to particular ranges of Mach values.

If the aircraft is at a high subsonic speed this creates two advantages: the air enters the fan at a lower Mach speed; and the higher temperature increases the local speed of sound.

However, shock waves can form on some parts of an aircraft at a speed where the aircraft is moving at less than M1.0 because the local speed of sound is determined by air density.

A sonic black hole (sometimes called a dumb hole) is a phenomenon in which phonons (sound perturbations) are unable to escape from a fluid that is flowing more quickly than the local speed of sound.