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| 超声喷泉的温度特性 | |
| 引用本文： | 李化茂,王耀俊,冯若,俞小青,谢锦平.超声喷泉的温度特性[J].声学技术,2002,21(4):185-187. |
| 作者姓名： | 李化茂 王耀俊 冯若 俞小青 谢锦平 |
| 作者单位： | 1. 宁波职业技术学院-井岗山师范学院超声课题组,宁波,315800;南京大学近代声学国家重点实验室,南京,210093 2. 南京大学近代声学国家重点实验室,南京,210093 3. 赣南师范学院近代声学研究所,赣州,341000 |
| 基金项目： | 国家自然科学基金(19934001号)，中科院声场声信息国家重点实验室2001年度课题基金，江西省自然科学基金(19912008号)，赣南师范学院自然科学基金 |
| 摘 要： | 文章研究了超声喷泉的温度特性。测量表明，自由喷射时超声喷泉内的温度上升速率随高度而增加，接近水平面高度时增加更快，邻近喷泉顶点时达到最大。苦对超声喷泉进行聚束喷射，那么这种温度上升速率显著提高，并且采用全程聚束时高于半程聚束，锥形管聚束时高于柱形管聚束，但无论采用哪种聚束方式喷射，超声喷泉内的温度上升速率均在1min左右趋于饱和。 |
| 关 键 词： | 超声喷泉 温度特性 自由喷射 聚束喷射 |
| 文章编号： | 1000-3630(2002)04-0185-03 |
| 收稿时间： | 2001/5/17 0:00:00 |
| 修稿时间： | 2001年5月17日 |
Temperature characteristic of ultrasonic fountain |
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| LI Hua-mao,WANG Yao-jun,FENG Ruo,YU Xiaoqing and XIE Jin-pin.Temperature characteristic of ultrasonic fountain[J].Technical Acoustics,2002,21(4):185-187. | |
| Authors: | LI Hua-mao WANG Yao-jun FENG Ruo YU Xiaoqing and XIE Jin-pin |
| Affiliation: | Ultrasound Group, Jinggangshan Normal Collge, Ningbo Vocation Institute, Ningbo 315800, China;State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, China;State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, China;Gannan Teachers College, Ganzhou 341000, China;Gannan Teachers College, Ganzhou 341000, China |
| Abstract: | In this paper, the temperature characteristic of ultrasonic fountain is investigated. The experimental results show that the rising rate of temperature in the fountain, when free-jetting, increases with the fountain height, and increases more rapidly at the height near the surface, and reaches the maximum at the near top of the fountain. And the rising rate increases rapidly when beam-jetting, and it is higher for fully-path jetting and cylindroconical tube beam-jetting than that for half-path jetting and cylindrical tube beam-jetting respectively, and whether what beam-jetting is adopted, the rising rate will tend to saturation after about 1 minute. |
| Keywords: | ultrasonic fountain temperature characteristic free-jetting beam-jetting |
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