Thermodynamics of perfect gases (cont.)
adiabatic expansion, 9
equation of state, 2, 3
first law of, 4
heat capacity, 5
isothermal expansion/compression, 7
ratio of specific heats, 10
reversible adiabatic process, 12
second law of, 11–13
specific internal energy and enthalpy, 10
Thickness of shock wave region, 123–129, 152,
253
Translational degrees of freedom, 10
Trinity test, 249, 251
Typical sound wave parameters, 38–41
V
Von Neumann-Richtmyer method, 136
Von Neumann stability condition, 151
W
Wasted energy, 243–250
Wave profile distortion, 38, 177, 180–184
Waves of finite amplitude
analysis, 45
changes, wave profile, 49–51
continuity and momentum equations, 43
ideal gas, 49
isentropic flow, 43
isentropic relation, 45
local sound velocity, 46
local velocity of sound, 48
nonlinear equation, 44
normal shock waves (see Normal shock
waves)
ordinary sound waves, 47, 49
particle velocity, 45
propagation speed of disturbance, 44, 49, 74
Riemann invariants (see Riemann
invariants)
time and place of formation of discontinuity
(see Shock waves)
travelling waves, 43
wave distorts, 44
zeroth order approximation, 44
Weak shock
analysis, 94
ideal gas, 95
latter equation, 95
pressure and density changes, 97–99
quadratic equation, 95
sound speed, 96
344
Index