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本帖最后由 商务车 于 2012-11-14 18:38 编辑
一直在想一个问题，为什么没有汽车外壳使用Golf球表面效应那样的蜂窝状外表？
总所周知，gold ball 表面效应能够减少空气摩擦，但是为什么没有真正的车使用这样的外表呢？说民用车使用太昂贵的话，为什呢连赛车也不用？
这张照片是在悉尼的某一个地铁站的tunnel里铺设的蜂窝状面板，用来减少地铁火车经过时空气与墙面摩擦。
golf ball surface
btw，为什么飞机表面也不做成蜂窝状呢？个人认为飞机表面是做成蜂窝状表面的提高空气动力效率的的最佳应用。
http://www.youtube.com/watch?v=6zLVazw1PJ4
在上面的youtube链接是MythBusters 的一集，在视频下面的评论里，提到曾经做过golf ball表面车体测试，并且确实会省油，可惜没有在youtube上找到这段视频。
Next they tested if the golf ball effect that the dirt was suppose to have works on a car. they covered a car in clay and smoothed it down so that it was the same shape as the car body. They did the same test as before, 5 runs smooth, and 5 with golfball dimples. Smooth-26mpg, Dimpled-29mpg. So a golfball surface is better than a smooth one =]
完整的视频文章在这里，但是其中的视频不知道为什么找不到，而且那个照片中的“蜂窝”明显太大了。
http://www.autoblog.com/2009/10/ ... -like-dimpling-mpg/
The Mythbusters must be closet car fans, because the hour-long show on the Discovery Channel seems to be producing more and more experiments involving automobiles than ever before. Their latest again involves fuel efficiency, this time testing if a dirty car is more fuel efficient than a clean one because of the golf ball-like dimpling effect of the dirt. Turns out dirt doesn't make a difference, but Adam and Jamie went one step further to test if covering a car in actual golf ball-like dimples would improve its fuel efficiency. According to cable's most crack scientists, yes, it will.
The show's team completely covered a last-gen Ford Taurus with modelers clay and figured out that it would achieve about 26 mpg at a constant 65 mph. They then went about adding over 1,000 dimples to the car's exterior. To keep the experiment consistent, all 1,082 dimples removed from the clay exterior were put in a box and set in the back seat so that the car would weigh exactly the same as before dimpling. The theory is that, like a golf ball, the dimples would reduce the car's drag through the air, thus allowing it to travel the same distance at the same speed using less fuel. The result? Over 29 mpg.
Follow the jump to watch the whole episode for yourself, though if you're only interested in watching the dimpled car do it's thing, skip ahead to about 40 minutes in.
有汽车专家/爱好者进来说说？
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去到世界的边际----塔斯马尼亚游记 （多图更新至完结篇） (2012-4-18) 小Q新视野 
发表于 2012-11-14 14:47
