微小通道内流动及气溶胶沉积特性实验研究
TL364; 事故后气溶胶通过安全壳微小通道穿透会发生滞留现象,在不同载气流动状态下,主导沉积机制不同,会影响气溶胶的穿透率,因此需要研究微小通道内气溶胶的载气流动特性及气溶胶沉积特性.本文建立了微小通道气溶胶穿透与滞留实验装置,开展了雷诺数为40～3 600的载气流动与气溶胶沉积实验研究.在雷诺数约为700时,微小通道内会发生层流转捩.层流流动下,在大突缩比的矩形微通道中,随着雷诺数的增大,入口碰撞效应减弱,穿透率增大;小突缩比薄壁毛细管微通道入口效应弱,随着雷诺数的增大,气溶胶几乎完全穿透.在雷诺数为800～3 600的湍流流动下,气溶胶沉积主要处于涡流扩散-碰撞区及惯性主导区,受到湍流涡...
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| Published in | 原子能科学技术 Vol. 57; no. 11; pp. 2094 - 2100 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
上海交通大学机械与动力工程学院,上海 200240
20.11.2023
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1000-6931 |
| DOI | 10.7538/yzk.2023.youxian.0349 |
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| Abstract | TL364; 事故后气溶胶通过安全壳微小通道穿透会发生滞留现象,在不同载气流动状态下,主导沉积机制不同,会影响气溶胶的穿透率,因此需要研究微小通道内气溶胶的载气流动特性及气溶胶沉积特性.本文建立了微小通道气溶胶穿透与滞留实验装置,开展了雷诺数为40～3 600的载气流动与气溶胶沉积实验研究.在雷诺数约为700时,微小通道内会发生层流转捩.层流流动下,在大突缩比的矩形微通道中,随着雷诺数的增大,入口碰撞效应减弱,穿透率增大;小突缩比薄壁毛细管微通道入口效应弱,随着雷诺数的增大,气溶胶几乎完全穿透.在雷诺数为800～3 600的湍流流动下,气溶胶沉积主要处于涡流扩散-碰撞区及惯性主导区,受到湍流涡的影响气溶胶穿透率随雷诺数的增大而减小. |
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| AbstractList | TL364; 事故后气溶胶通过安全壳微小通道穿透会发生滞留现象,在不同载气流动状态下,主导沉积机制不同,会影响气溶胶的穿透率,因此需要研究微小通道内气溶胶的载气流动特性及气溶胶沉积特性.本文建立了微小通道气溶胶穿透与滞留实验装置,开展了雷诺数为40～3 600的载气流动与气溶胶沉积实验研究.在雷诺数约为700时,微小通道内会发生层流转捩.层流流动下,在大突缩比的矩形微通道中,随着雷诺数的增大,入口碰撞效应减弱,穿透率增大;小突缩比薄壁毛细管微通道入口效应弱,随着雷诺数的增大,气溶胶几乎完全穿透.在雷诺数为800～3 600的湍流流动下,气溶胶沉积主要处于涡流扩散-碰撞区及惯性主导区,受到湍流涡的影响气溶胶穿透率随雷诺数的增大而减小. |
| Author | 佟立丽 胡培政 王善普 曹学武 |
| AuthorAffiliation | 上海交通大学机械与动力工程学院,上海 200240 |
| AuthorAffiliation_xml | – name: 上海交通大学机械与动力工程学院,上海 200240 |
| Author_FL | TONG Lili WANG Shanpu CAO Xuewu HU Peizheng |
| Author_FL_xml | – sequence: 1 fullname: HU Peizheng – sequence: 2 fullname: WANG Shanpu – sequence: 3 fullname: TONG Lili – sequence: 4 fullname: CAO Xuewu |
| Author_xml | – sequence: 1 fullname: 胡培政 – sequence: 2 fullname: 王善普 – sequence: 3 fullname: 佟立丽 – sequence: 4 fullname: 曹学武 |
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| DOI | 10.7538/yzk.2023.youxian.0349 |
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| DocumentTitle_FL | Experimental Study on Gas Flow and Aerosol Deposition Characteristics in Micro-channel |
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| Keywords | 湍流沉积 entrance effect turbulent dep-osition micro-channel 微小通道 penetration flow transition 流动转捩 穿透率 入口效应 |
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| Snippet | TL364; 事故后气溶胶通过安全壳微小通道穿透会发生滞留现象,在不同载气流动状态下,主导沉积机制不同,会影响气溶胶的穿透率,因此需要研究微小通道内气溶胶的载气流动特性及气溶胶沉积特性.本文建立了微小通道气溶胶穿透与滞留实验装置,开展了雷诺数为40～3... |
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| Title | 微小通道内流动及气溶胶沉积特性实验研究 |
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