在小型太阳能烟囱（SC）的数值模拟计算中,选取不同流态模型（层流、湍流或转捩）计算结果不同。该文使用光线追踪和环境侧风模拟,对不同流态模型进行数值模拟计算,对比分析计算结果与试验数据。结果表明：不同时刻转捩模型下流体湍流强度、受环境侧风扰动程度与层流模型、湍流模型相比更小,在计算中使用转捩模型更准确,为小型SC流场模拟计算的模型选择提供参考。
Abstract
In the numerical simulation calculation of small solar chimney （SC）, different flow modes （laminar flow, turbulence or transition） are selected to obtain different calculation results. In this paper, ray tracing and environmental crosswind simulation are used to numerically simulate different flow models, and the calculated results and test data are compared and analyzed. The results show that the intensity of fluid turbulence and the degree of ambient crosswind disturbance under the transition model at different times are smaller than those of laminar flow model and turbulence model, so it is more accurate to use the transition model in calculation, which provides a reference for the model selection of small SC flow field simulation calculation.
关键词
太阳能烟囱 /
转捩流 /
热分析 /
数值分析
Key words
solar chimneys /
transition flow /
thermoanalysis /
numerical analysis
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] SINGH A P, KUMAR A, SINGH O P.A novel concept of integrating bell-mouth inlet in converging-diverging solar chimney power plant[J]. Renewable energy, 2021, 169: 318-334.
[2] SHEIKHNEJAD Y, GANDJALIKHAN NASSAB S A. Enhancement of solar chimney performance by passive vortex generator[J]. Renewable energy, 2021, 169: 437-450.
[3] 黄明华, 刘广新, 何雅玲, 等. 基于遗传算法的太阳能烟囱发电站结构优化[J]. 西安交通大学学报, 2021, 55(10): 1-10.
HUANG M H, LIU G X, HE Y L, et al.Structural optimization of solar chimney power plant by a genetic algorithm[J]. Journal of Xi'an Jiaotong University, 2021, 55(10): 1-10.
[4] 明廷臻, 刘伟, 熊宴斌, 等. 太阳能热气流发电系统的传热与流动数值分析[J]. 太阳能学报, 2008, 29(4): 433-439.
MING T Z, LIU W, XIONG Y B, et al.Numerical analysis of heat transfer and flow in the solar chimney power generation system[J]. Acta energiae solaris sinica, 2008, 29(4): 433-439.
[5] WANG J W, NIE J, JIA J, et al.Structural optimization to reduce the environmental crosswind negative influence on the performance of a solar chimney power plant system[J]. Solar energy, 2022, 241: 693-711.
[6] ZOU Z, GONG H X, LIE X S, et al.Numerical investigation of the crosswind effects on the performance of a hybrid cooling-tower-solar-chimney system[J]. Applied thermal engineering, 2017, 126: 661-669.
[7] ZHOU X P, YUAN S.Wind effects on a solar updraft power plant[J]. Journal of wind engineering and industrial aerodynamics, 2017, 170: 294-305.
[8] 聂晶, 田瑞, 蔡琦龙, 等. 基于太阳能烟囱发电系统集热性能试验的集热棚倾角优选[J]. 农业工程学报, 2018, 34(12): 224-229, 309.
NIE J, TIAN R, CAI Q L, et al.Optimal collector angle by test on heat collection performance of solar chimney power plant system[J]. Transactions of the Chinese Society of Agricultural Engineering, 2018, 34(12): 224-229, 309.
[9] FALLAH S H, VALIPOUR M S.Numerical investigation of a small scale sloped solar chimney power plant[J]. Renewable energy, 2022, 183: 1-11.
基金
内蒙古自然科学基金（2021LHMS05007）; 内蒙古自治区直属高校基本科研业务费项目（JY20220397）; 内蒙古工业大学博士基金项目 （BS201933）; 内蒙古自治区重大专项（2019ZD0014）
PDF(3231 KB)
