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| 非稳定天然气喷流的数值模拟 | |
| 引用本文： | 梁夫友,许伯彦,蔡少娌,耿浩然.非稳定天然气喷流的数值模拟[J].山东大学学报(工学版),2002,32(1):25-29. |
| 作者姓名： | 梁夫友 许伯彦 蔡少娌 耿浩然 |
| 作者单位： | 1. 250014,山东省济南市山东建筑工程学院机电系 2. 250022,山东省济南市济南大学机械学院 3. 250061,山东省济南市山东大学材料科学与工程学院 |
| 基金项目： | 山东省自然科学基金课题 |
| 摘 要： | 突发天然气喷流的发展过程被数值模拟 ,考察了天然气喷流内部的速度场、密度场等 .表明了在喷流下流的势涡流对喷流体的挤压作用是产生喷流的非稳定区域的原因 .并且 ,由数值计算的天然气喷流的质量分布图得到的喷流形状和贯穿距离等与由纹影照相得到的实验结果是相当一致的 . |
| 关 键 词： | 天然气 数值模拟/非稳定自由喷流 势涡流 纹影照相 |
| 文章编号： | 1000-5323(2002)01-0025-05 |
| 修稿时间： | 2001年8月24日 |
NUMERICAL SIMULATION OF THE UNSTEADY STATE NATURAL GAS JET |
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| LIANG Fu-you,XU Bo-yan.NUMERICAL SIMULATION OF THE UNSTEADY STATE NATURAL GAS JET[J].Journal of Shandong University of Technology,2002,32(1):25-29. | |
| Authors: | LIANG Fu-you XU Bo-yan |
| Abstract: | The developing process of the impulsively started natural gas jet was numerically simulated. The velocity fields, density fields were investigated. Investigations on the structure of the jet proved that the compression action of the potential vortex in downstream of the jet upon the jet flow accounted for the existing of the unsteady state region in the jet. And the shapes and tip penetrations of the natural gas jet obtained from the calculated mass distributions were in good agreement with the measurements obtained experimentally using schlieren method. |
| Keywords: | Natural gases Numerical simulation/ Unsteady state free jet Potential vortex Schlieren photograph |
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