Gas Dynamics

"Gray to God" 23) Gas Dynamics Applications: 1) High Rocket speed Annodynamics Missile and propulsion 2) 3) steam and gas turbines 4) High speed turbo compressors. which the flow: It is that type of point flow to in point, ie; compressible density the density of the is fluid not changes constant for the fluid Incompressibl- eg. flow: Densty of the fluid is constent. cases and vapaus eg: (M) : It is de fined as of the sound vato of the Liquids fluid ie volocity Mach Number and the C local C- selocity velority fluid of M- a a- local volicity of Sound, volocity of sound a) : It is the volecty which 4 a sound small is a Fluid medium. or the speed with disturbance is transmitted through the fluid, r = Rato of specific heat a = FRT R= gas Constal To Temperature Stagnation state is to It Zew velocity dated at by zero electiciting elevates a gas insetthopically dece the stagnator properties the third. The properties of the of fluid at stagnation state an ege stagnation Temp, stagnation pressure, Stagnator Deni stagration enthalpu et -

(*) stagnator "Emperatur(To): It is the temperature of the gas when it is at everythopically elevator, decelerated to new videcity Leoo Where M - Mad Number - a c To It r-l M2 = 2 T To= stagnation temps,T- state Temp. holews) (+) signation pressure (Po) toug reto It is the pressure of the gas when elevation it is sentropically decolvated to zero valacity at Zeto 5 P. stagnation pressure if = + 8-1 9 2 M2 T-1 P= state pressure. M- Mach number. P: o- xp 91 S ( ) ) stagnation donality (P.) 2652- -gb carry 5-1 velocity It is decelareted the density P xeto of the gas at when SAY zen it elevator is isentropi- Po P - 11 5-1 2 M27 attend NO s fal most Nl A nl + 9 nl (+) stagnation veloury of Sound(a.] At to velcury of and To a= TRT nb )- - put a-a and T- N ao- TR To. 6 H 96 (Ab Ab t Its its 90 At 'if A