Civil Engineering Reference
In-Depth Information
time-dependent stress. For the particular case of constant
strain, this solution assumes the following form:
(
)
++
exp
−
γ
t
B
ω
+
∝
yA
+
(
)(
)
±−
exp
2
γ
++
t
δ
+
2
− +
δ
+
2
δ
+
2
B
iA
a
a
Figure 5.45.
View of a section of two CRVPs in the plane y-z. The
stagnation flow induced by B compresses and rapidly eliminates the
positive vorticity layer induced by A, causing spanwise asymmetry
In this relation,
+
+
is the asymptotic thickness
δ
=
π
2
γ
a
B
of
, under the influence of the strain
+
. The sign
in
ω
+
γ
±
yA
B
the term in the radix depends on the initial thickness
δ
+
,
iA
+
. In the first case,
compression will cause the vorticity to become concentrated.
which may be greater than or less than
δ
a
Search WWH ::
Custom Search