Environmental Engineering Reference
In-Depth Information
Fig. 2.15 Eigenvalue detonation curve of liquid explosives
Fig. 2.16 The pressure distribution plots/curves of under-pressure detonation
different mass speed,
the pressure distribution curves/plots are displayed in
Fig.
2.16
[
4
,
5
,
7
].
When
l
p
[
l
S
, detonation waves have a minimum value in the area of strong
detonation reaction area (
= 0), and the reaction area ends at point S1. The media is
homogeneous range, and the mass velocity of uniform area is the same with point
S1 (
Σ
l
S
1
). When u
p
¼ u
S
, the detonation is CJ one, and the reaction area ends at
point S. After detonation, there is a homogeneous range with mass velocity u
S
.
When u
S
, the detonation is under-pressure detonation, and the reaction
area ends at point fW. Because u
p
[
u
W
\
u
p
\
u
W
, there are shock waves (compressing
waves) to accelerate the mass to velocity u
p
. Compared to the waves, detonation has
supersonic velocity, so the homogeneous range is broaden continuously. If the
piston velocity reduces further, there are velocity reduce mass points of sparse
waves, which uniform the boundary velocities. After the waves of under-pressure
detonation, the wave head point fW of sparse waves further broadens the homo-
geneous range.
