Page 103 - 48Fundamentals of Compressible Fluid Mechanics
P. 103
4.6. ISOTHERMAL TABLE 65
The net force is obtained by utilizing equation (4.96)
33'33 3
4.5.2 The Impulse Function in Isothermal Nozzle
# # # #
Previously Impulse function was developed in the isentropic adiabatic flow. The
same is done here for the isothermal nozzle flow model. As previously, the defi-
nition of the Impulse function is reused. The ratio of the impulse function for two
points on the nozzle is
(4.97)
Utilizing the ideal gas model for density and some rearrangement results in
(4.98)
and the ratio of equation (4.71) transformed equation into
(4.98)
Since
(4.99)
) (not the minimum point) results in
At the star condition (
(4.100)
4.6 Isothermal Table
Table 4.3: Isothermal Table
'3
'3
0*
% %
0
'3
3
'3
*%
0
%
3
0
*
