Supersonic through-flow fan design The NASA Lewis Research Center has embarked on a program to experimentally prove the concept of a supersonic through-flow fan which is to maintain supersonic velocities throughout the compression system with only weak shock-wave flow losses. The detailed design of a supersonic through-flow fan and estimated off-design performance with the use . As an object moves through a gas, the gas molecules are deflected around the object. If the speed of the object is much less than the speed of sound of the gas, the density of the gas remains constant and the flow of gas can be described by conserving momentum, and the speed of the object approaches the speed of sound, we must consider compressibility effects on the gas. Supersonic flight, passage through the air at speed greater than the local velocity of sound. The speed of sound (Mach 1) varies with atmospheric pressure and temperature: in air at a temperature of 15 °C (59 °F) and sea-level pressure, sound travels at about 1, km ( miles) per hour. At. This is especially true of base flow for axisymmetrical bodies at transonic and supersonic speeds. Recently, experimental measurements (Herrin and Dutton ) have been made in te base region for supersonic flow over a cylindrical aflerbody. The data include base pressure distribution (along the base), mean flow, and turbulence quantities.

Supersonic Flow Turning • Previously, we examined supersonic flow over (sharp) concave corners/turns – oblique shockallows flow to make this (compression) turn • What happens if: – turn is convex (expansion) already shown expansion “shock” impossible (entropy would be destroyed) – turn is gradual (concave or convex) M1>1 M1>1. Paperback or Softback. Condition: New. Supersonic Flow and Shock Waves, a Manual on the Mathematical Theory of Non-Linear Wave Motion. Book. Seller Inventory # BBS More information about this seller | Contact this seller 9. 17 Compressible and Supersonic Flow 1 The bulk kinetic energy in the solar wind, built up during acceleration, is rapidly and irreversibly transformed into heat as it passes through this shock front. In this chapter, we shall study some properties of supersonic ﬂows. After restating the. First, the flow up to the corner is uniform, at Mach number (say), and, thus, the leading Mach line must be straight, and inclined to the flow at the Mach angle. Because of the limited upstream influence in supersonic flow, the same argument may be applied to each succeeding portion of the flow.

Since you know the mathematical equations, which says that for M>1, area increase will increase velocity, etc. Let's talk about the physics behind it, first of all it's always not necessary that the velocity increases for the converging diverging. Supersonic flow through a constricted pipe - Duration: Sean O'Neill views. HIGH SPEED FLIGHT & FLYING ABOVE SPEED OF SOUND MACH SHELL OIL CO. “In order to try to keep the flow of good energy, and hopefully keep that creative juice coming towards me, I have to pass on whatever comes my way for the best.”. Disclaimer: I know absolutely nothing about fluid dynamics, and very little about physics in may be a really dumb question. Now, at subsonic speeds, converging and diverging nozzles behave intuitively. When you have air moving through a converging nozzle, the area goes down, so naturally it has to speed up to maintain conservation of momentum (assuming it doesn't compress or heat up).