| 马氏瓶回流原理分析 |
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| 引用本文： | 姚仰平,陈伟,陈含.马氏瓶回流原理分析[J].力学与实践,2020,42(1):22-27. |
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| 作者姓名： | 姚仰平 陈伟 陈含 |
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| 作者单位： | 北京航空航天大学交通科学与工程学院,北京 100083 |
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| 基金项目： | 1) 国家重点基础研究发展计划(2014CB047006)和国家自然科学基金(11672015, 51579005) 资助项目 |
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| 摘 要： | 为了研究马氏瓶发生回流时水位变化的规律,利用理想气体定律和压强理论对马氏瓶的回流原理进行了推导,得到了引起马氏瓶回流水量的计算公式,并结合试验对公式进行了验证,发现水量的计算值与实际值基本一致,表明了计算公式的适用性。同时发现回流水不仅进入马氏瓶进气管,也会进入马氏瓶内,回流到瓶内的水将压缩水面上部的空气,使瓶内空腔体积减小,试验结果进一步揭示了马氏瓶回流过程的规律。
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| 关 键 词： | 马氏瓶 回流 锅盖效应 试筒 |
| 收稿时间： | 2019-07-29 |
ANALYSIS OF BACK-FLOW PRINCIPLE OF MARIOTTE BOTTLE1) |
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| YAO Yangping,CHEN Wei,CHEN Han.ANALYSIS OF BACK-FLOW PRINCIPLE OF MARIOTTE BOTTLE1)[J].Mechanics and Engineering,2020,42(1):22-27. |
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| Authors: | YAO Yangping CHEN Wei CHEN Han |
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| Institution: | School of Transportation Science and Engineering, Beihang University, Beijing 100083, China |
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| Abstract: | In order to study the principle of the water reflow phenomenon in the Mariotte bottle, the calculation formula for the amount of the water reflow is derived by using the Ideal Gas Law and the theories of pressure in this paper. And the validity of the formula is verified by experiments. It is found that the calculated value of the supplementary water amount is basically consistent with the actual value, which shows that the formula is applicable. At the same time, the results show that the returned water enters not only the intake pipe, but also the Mariotte bottle. The water reflowed to the Mariotte bottle will compress the air above the water surface and reduce the volume of the cavity in the bottle, which further reveals the mechanism of the water reflow process in the Mariotte bottle. |
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| Keywords: | Mariotte bottle reflow pot-cover effect test tube |
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