flow turbulence
121sand dune — Hill, mound, or ridge of windblown sand or other loose material such as clay particles. Dunes are commonly associated with desert regions and seacoasts, and there are large areas of dunes in nonglacial parts of Antarctica. * * * Introduction any …
122Drag reducing agent — A drag reducing agent, also called a flow improver, is a long chain polymer chemical that is used in crude oil, refined products or non potable water pipelines. It is injected in small amounts (parts per million) and is used to reduce the… …
123Modélisation des turbulences — La modélisation de la turbulence (et non des turbulences ) est une branche de la dynamique des fluides consistant, pour la simulation numérique des écoulements turbulents, à représenter l influence de la turbulence sur l écoulement moyen… …
124SYSTÈMES DYNAMIQUES DIFFÉRENTIABLES — Sans doute née avec le mémoire que Poincaré écrivit en 1881 «sur les courbes définies par des équations différentielles», où l’étude quantitative (analytique) locale des équations différentielles dans le champ complexe est remplacée par leur… …
125Wind shear — Wind shear, sometimes referred to as windshear or wind gradient, is a difference in wind speed and direction over a relatively short distance in the atmosphere. Wind shear can be broken down into vertical and horizontal components, with… …
126AMC V8 engine — American Motors Corporation (AMC) produced a series of widely used V8 engines from the mid 1950s before being absorbed into Chrysler. Some continued well after the merger in Jeep vehicles until 1991.GEN 1 Nash/Hudson/Rambler V 8s (1956 1966)Many… …
127Aquapel — is a technical racing swimsuit designed by Tyr. It has a unique creation process which gives it a high speed design, turbulence reduction and advanced compression biochemics. The suit fits snuggly and uniformly across all parts of the body. The… …
128Atmospheric dispersion modeling — Industrial air pollution source Atmospheric dispersion modeling is the mathematical simulation of how air pollutants disperse in the ambient atmosphere. It is performed with computer programs that solve the mathematical equations and algorithms… …
