基于聚光集热和脉动风压的定日镜群模拟研究
Simulation of heliostat group based on heat gathering and fluctuating wind pressure
廖钦沛 1马小晶 2程泽宁 3吐松江·卡日 1刘寒4
作者信息
- 1. 新疆大学 电气工程学院,新疆 乌鲁木齐 830049
- 2. 新疆大学 电气工程学院,新疆 乌鲁木齐 830049;动力工程多相流国家重点实验室,陕西 西安 710000
- 3. 新疆天池能源有限责任公司 准东能源研究院,新疆 昌吉 831100
- 4. 中国科学院 苏州生物医学工程技术研究所,江苏 苏州 215163
- 折叠
摘要
太阳辐射量和风荷载会直接影响光热电站的持续发电量.文章根据新疆哈密地区中电淖毛湖光热电站的实际环境情况,建立定日镜群的三维数值模型,对不同季节太阳辐射和迎风仰角下镜群的受热情况及流场特性开展数值模拟,分析获得风在不同入射角下镜面耀斑分布情况和脉动风压系数.结果表明:模拟所得镜群阻力系数和升力系数与相关研究结果较为吻合,验证了所建模型的有效性;不同季节下耀斑的分布规律较为相似,主要取决于太阳方向角的变化;随着风入射角的增大,镜群的尾流区域呈先减小后增大趋势;由于定日镜镜群中的尾流可有效抑制风压,结合镜群的排布方式保证内部的稳定性,其中,正五边形定日镜的中心处保持较低的脉动风压,极大提高了镜面受力均衡性.
Abstract
The amount of solar radiation and wind load will directly affect the continuous generation of solar thermal power station.Therefore,according to the actual environmental conditions of Zhongdian Nao Maohu solar thermal Power Station in Hami region,Xinjiang,a three-dimensional numerical model of heliostat group was established to simulate the heating conditions and flow field characteristics of the mirror group under solar radiation and upwind Angle in different seasons,and the distribution of mirror flares and pulsating wind pressure coefficients under different wind incidence angles were analyzed.The results show that the simulated drag coefficient and lift coefficient are in good agreement with the related research results,which verifies the validity of the model.The distribution of flares in different seasons is similar and mainly depends on the variation of solar direction Angle.With the increase of the wind incidence Angle,the wake region of the mirror cluster decreases first and then increases.Since the wake in the helioscope group can effectively inhibit wind pressure,the internal stability can be ensured by combining the arrangement of the group.Among them,the center of the regular pentagonal helioscope maintains a low pulsating wind pressure,which greatly improves the force balance of the mirror.
关键词
定日镜/脉动风压系数/太阳辐射/数值模拟Key words
heliostat/fluctuating wind pressure coefficient/solar radiation/numerical simulation引用本文复制引用
基金项目
新疆自治区重点研发计划(2022B03028-5)
新疆自治区"天山英才"培养计划(2022TSYCCX0054)
新疆自治区重大科技专项(2022A01002-2)
动力工程多相流国家重点实验室开放基金(2022WCS0449)
国家级大学生创新训练计划项目(202310755010)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据