A blast wave in fluid dynamics is the pressure and flow resulting from the deposition of a large amount of energy in a small very localised volume. The flow field can be approximated as a lead shock wave, followed by a 'self-similar' subsonic flow field. In simpler terms, a blast wave is an area of pressure expanding supersonically outward from an explosive core. It has a leading shock front of compressed gases. The blast wave is followed by a blast wind of negative pressure, which sucks items back in towards the center. The blast wave is harmful especially when one is very close to the center or at a location of constructive interference. High explosives, which detonate, generate blast waves.
Read more about Blast Wave: Sources of Blast Waves, History, Characteristics and Properties of Blast Waves, How Blast Waves Cause Damage
Famous quotes containing the words blast and/or wave:
“What if there’s nothing up there at the top?
Where are the captains that govern mankind?
What tears down a tree that has nothing within it?
A blast of wind, O a marching wind,
March wind, and any old tune,
March march and how does it run.”
—William Butler Yeats (1865–1939)
“I hear
the tide turning. Last
eager wave over-
taken and pulled back
by first wave of the ebb.”
—Denise Levertov (b. 1923)