Machine-translated by Google. Questions are authored in English.
Top

Discussion

The continuity equation for steady one-dimensional compressible flow states that the constant quantity is

  • A.The product of density, velocity and area
  • B.The product of velocity and area alone
  • C.The product of density and velocity alone
  • D.The product of pressure, velocity and area

Answer: A

Mass conservation fixes the product of density, velocity and cross-sectional area. In incompressible flow the density drops out and the familiar velocity-area product survives, but retaining the density is essential in compressible flow and is exactly what produces the area-velocity relation and its reversal at Mach one.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.