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WorksheetsGAS DYNAMICS
Total questions: 10
Worksheet time: 5mins
Which pressure acts normal to flow direction?
Total pressure
Static pressure
Kinetic pressure
Dynamic pressure
What is the formula for velocity of flow in incompressible flow?
V=2/q
V=(2/µ)*q
V=√(2/rho)*q
V=2/rho*q
Which device is used for measurement of total pressure?
hoses
jet bridge
Static port
Pitot Tube
What are the three pressure interested in gas dynamic?
Total or stagnation, static and dynamic
Static, dynamic and kinetic
kinetic , total and geometric pressure
Potential, stagnation and kinetics
The ratio of inside and outside diameter of pitot tube?
1/2 to 2/1
½ to 1/3
½ to ¾
½ to 3/2
For an incompressible flow, the velocity of the flow can be calculated from the measured dynamic pressure q by the relation --------------------
V=2/rq
V=2/rho q
V=√2/ᴦq
V = √2 𝜌 q
For incompressible flows, the three pressures are linked together by --------------------------- equation
Energy
Bernoullis
potential
continuity
In subsonic flows, the open-ended tube facing into the flow always measures the --------------------- of the flow.
Static pressure
Stagnation pressure
dynamic pressure
kinetic pressure
Calculate the Stagnation pressure where the dynamic pressure is 50N/m and static pressure is 150N/m
200
150
100
50
What is the relation obtained for Rayleigh supersonic pitot Formula?
p1 /p02 = ( 2𝛾 𝛾 + 1 M2 1 − 𝛾 − 1 𝛾 + 1 )1∕(𝛾−1) (𝛾 + 1 2 M2 1 )𝛾∕(𝛾−1)
p1/po2 = (2rho-1+rho+rho-1)/rho(rho+1)
p1/po2= (2r+ 1-r-r+1)/r(r-1)
p1/p02 =(2 rho + 1-rho-rho+1)/ rho(rho-1)
