Page 269 - 48Fundamentals of Compressible Fluid Mechanics

13.4. SOLUTION OF MACH ANGLE 231
Oblique Shock
k = 1 4
3 90

80
2.5
70
q
2 60
M d
y
50
1.5
40
1 30
20
0.5
10

0 0
2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
M
x
Thu Jun 30 15:14:53 2005

Fig. 13.16: Maximum values of the properties in oblique shock

2 3 4 5 6 7 8 9 10
Example 13.4: M
x
The Section described in Figure 13.18 air is flowing into a suction section at
, ,' , and . Compare the different conditions in the two
different configurations. Assume that only weak shock occurs.

)

SOLUTION

The first configuration is of a normal shock. For which the results 26 are
7 8

5

4
4

6

+1+-+)
) )
9)1) 9
+- )19
In the oblique shock the first angle shown is 9 7 7 7 8
6

c 7 8

5

4
4
4
-9 )
)
"1
1+
"-"
90 -")
) "-
and the additional information by the minimal info in Potto-GDC 7 8 9

26 The results in this example are obtained using the graphical interface of POTTO–GDC thus, no
input explanation is given. In the past the input file was given but the graphical interface it is no longer
needed.