﻿

expansion wave

In supersonic flow, expansion waves occur when bodies begin to narrow, making more space available. In passing through an expansion wave, air velocity increases, while temperature and pressures are reduced. A simple wave or progressive disturbance in the isentropic flow of a compressible fluid, such that the pressure and density of a fluid particle decrease on crossing the wave in the direction of its motion. It is the opposite of a compression wave. Also called a rarefaction wave. See also compression wave.

Aviation dictionary. 2014.

Look at other dictionaries:

• expansion wave — praretėjimo banga statusas T sritis fizika atitikmenys: angl. expansion wave; rarefaction wave vok. Verdünnungswelle, f rus. волна разрежения, f pranc. onde de raréfaction, f …   Fizikos terminų žodynas

• expansion wave — a shock wave that expands the medium through which it is transmitted. Cf. compression wave. * * * …   Universalium

• expansion wave — a shock wave that expands the medium through which it is transmitted. Cf. compression wave …   Useful english dictionary

• Wave Blaster — may refer to: * Yamaha Wave Blaster, a personal watercraft produced from 1993 to 1996 * Creative Wave Blaster, a sound card by Creative in the Sound Blaster line and commonly referred to as an internal expansion port on some early sound cards …   Wikipedia

• Expansion chamber — An Expansion chamber is an exhaust system used on a two stroke cycle engine to enhance its power output by improving its volumetric efficiency. It makes use of the energy left in the burnt exhaust exiting the cylinder to aid the filling of the… …   Wikipedia

• Wave equation — Not to be confused with Wave function. The wave equation is an important second order linear partial differential equation for the description of waves – as they occur in physics – such as sound waves, light waves and water waves. It arises in… …   Wikipedia

• Wave function — Not to be confused with the related concept of the Wave equation Some trajectories of a harmonic oscillator (a ball attached to a spring) in classical mechanics (A B) and quantum mechanics (C H). In quantum mechanics (C H), the ball has a wave… …   Wikipedia

• Wave function collapse — Quantum mechanics Uncertainty principle …   Wikipedia

• Wave strategy — Theory The Wave Strategy [Christoph Lymbersky: (2008) Market Entry Strategies ; Management Laboratory Press] was first described by Christoph Lymbersky in the book Market Entry Strategies . This strategy can be employed by a company that wants to …   Wikipedia

• wave — 1. A movement of particles in an elastic body, whether solid or fluid, whereby an advancing series of alternate elevations and depressions, or rarefactions and condensations, is produced. 2. The elevation of the pulse, felt by the finger, or… …   Medical dictionary