In a normal shockwave there will be a/an (1) _____ in pressure, a/an (2) _____ in temperature, a/an (3) _____ in density and a/an (4) _____ in velocity.
As soon as we admit to compressibility, the density, temperature and pressure should be considered.
Density is directly proportional to pressure and inversely proportional to temperature. So, at constant temperature, if the pressure increases, so too will the density.
Incompressible air flowing through a venturi will speed up as it flows through the choke, resulting in a drop in static pressure. Throughout this process, density and temperature remain unchanged.
When a high speed flow encounters a venturi, the effects of compressibility become very apparent. In this case, the choke causes the air to slow down, increase in pressure, increase in density and increase in temperature.
Your Notes (not visible to others)
This question has appeared on the real examination, you can find the related countries below.
-
Austro Control1
-
Spain1
Use Keyboard Shortcuts
