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伯努利定律
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伯努利定律
1.
伯努利定律 空氣中的壓力與流速
2.
2 伯努利定律 伯努利定律是流體力學中一項,所講的就是當流速不 。同的時候,壓力就會不同 壓力大會往壓力小的地方 。擠壓 那麼為什麼流速快壓力會變小呢? 。因為流體與物體碰撞會產生壓力 流速如果較快,碰 。撞機會就會少,壓力就變小了
流速慢,碰撞機會大 。,壓力就變大了
3.
3 與伯努利相關的科學
4.
4 文氏效應
5.
5 用能量守恆來解釋伯努利定律 白努利原理其實就是能量守恆定律( conservation of energy
。)在流體上的應用 。也就是說我們能使用文氏管來算出壓力與流速 。因為它們的壓力流速的總數是會等於的
6.
6 棒球與氣壓
7.
7 竹蜻蜓
8.
8 特例:托里切利定律
9.
9 伯努利如何解決問題? 。飛機也就是利用白努力定律起飛的 一般來說機翼的形狀是上面凸底下凹,飛行的時候從 。上下兩面流過的氣流速度會有差異 慢根據白努力定 律,從下面流過的速度慢,所以壓強大,相反地,從 上面流過的速度較快,所以壓強亦較小,壓強大的一 。方要向壓強小的一方產生推力,這就是機翼的昇力
10.
10 參考資料 https://youtu.be/zP7Eu4FDE8I https://www.grc.nasa.gov/www/k-12/airplane/bern.h https://youtu.be/Qz1g6kqvUG8 https://www.youtube.com/watch?v=8vqMotb6m3c https://smallcollation.blogspot.tw/2013/11/bernoulli
11.
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