rotating flow
111Unconventional wind turbines — Wind turbines History Design Manufacturers Unconventional As of 2010, the most common type of wind turbine is the three bladed horizontal axis wind turbine (HAWT). This article deals with various types of wind turbine that differ from the… …
112History of timekeeping devices — For thousands of years, devices have been used to measure and keep track of time. The current sexagesimal system of time measurement dates to approximately 2000 BC, in Sumer. The Ancient Egyptians divided the day into two 12 hour periods, and… …
113European Union — 1. an association of European nations formed in 1993 for the purpose of achieving political and economic integration. Formerly known as the European Economic Community, the European Union s member states are Austria, Belgium, Denmark, Finland,… …
114electric generator — ▪ instrument Introduction also called dynamo, any machine that converts mechanical energy to electricity for transmission and distribution over power lines to domestic, commercial, and industrial customers. Generators also produce the… …
115Curtiss P-60 — P 60 Curtiss XP 60C in flight, modified from second XP 60A, wit …
116Viscometer — A viscometer (also called viscosimeter) is an instrument used to measure the viscosity of a fluid. For liquids with viscosities which vary with flow conditions, an instrument called a rheometer is used. Viscometers only measure under one flow… …
117Superfluid — Superfluidity is a phase of matter or description of heat capacity in which unusual effects are observed when liquids, typically of helium 4 or helium 3, overcome friction by surface interaction when at a stage, known as the lambda point for… …
118Taylor vortex — Taylor vortices (after G. I. Taylor) are vortices formed in rotating Taylor Couette flow when the Taylor number (mathrm{Ta}) of the flow exceeds a critical value mathrm{Ta c}. For flow in which :mathrm{Ta}mathrm{Ta c} …
119Model warship combat — VNS Verdun takes a shot at USS Nathaniel Greene at the 2007 North American Big Gun Open [1] event Model warship combat is an international club activity, in which participants construct radio controlled scale models of actual …
120Disk loading — The MV 22 Osprey tiltrotor has a relatively high disk loading, producing visible blade tip vortices from condensation of the marine air in this photo of a vertical takeoff …
