In this study, models of vehicles were tested in a laboratory tornado simulator and in a boundary layer wind tunnel for sliding, flipping and lofting behaviors. Results were compared to full-scale observations to study whether vehicles might be a tool to estimate wind speeds and serve as an ...
phrasesa gust of windA gust of wind rattled the window.be blowing/swaying/flapping etc in the windThe trees were all swaying in the wind.wind + NOUNwind speedWind speeds of up to 80 miles an hour were recorded.TESAUROwind air moving in a current, especially strongly or quicklyA cold ...
Thissuctioneffectincreaseswindspeedsbyupto30percentateachofthe95-foot-longrotorstoboostelectricityproduction. 这一抽吸效应使得经过每个长达95英尺的转子的时候风速增加30%,有利于电力生产。 article.yeeyan.org 8. Inareaswithhigherwindspeeds,windenergy canbeahighlycost-effectivealternativetofossilfuelgeneration. ...
Tornado Wind Turbine will reach nominal performance at a wind speed of 8 m/s with new blades and dome. The updated turbine generates twice as much energy in the wind speed range from 3 to 8 m/s. At speeds greater than 10 m/s, the performance is comparable, since it is limited by ...
Quantitative Insight into Rational Tornado Design Wind Speeds for Residential Wood-Frame Structures Using Fragility Approach Tornadoes are an extremely devastating natural hazard that have significant consequences but are currently not considered in the structural design codes du... MO Amini,JWVD Lindt -...
A wind farm in southwest Iowa suffered a direct hit from a powerful tornado that crumpled five of the massive power-producing towers, including one that burst into flames.
答案:1A2B3C4A5C提示:Tornadoes are the most violent storms on the earth.. Winds rotate around the center of tornado’s funnel shape clouds at speeds of more than two hundred miles per hour potentially causing tremendous damage. Most tornadoes occur in spring in the mid-western and southern...
guns used by the police to determine the speed of an automobile. Although the U.S. National Weather Service has estimated thattornadowinds have reached a velocity of 500 mph (800 kph), the highest wind speeds ever documented, 318 mph (516 kph), were measured using Doppler radar during a ...
Many studies have investigated the effects of downbursts on different structures. However, the extensive range of varying wind field parameters and the diverse representations of wind speeds render the study of structural wind effects complex and challenging under downbursts. This study firstly reviews ...
Tornadoes usually aren't included in the rankings for the fastest surface winds because there is no reliable way to measure their wind speeds directly. Tornadoes destroy weather instruments. Doppler radar can be used to estimate a tornado's winds but because it only gives an approximation, these...