Abstract:Inner ring beams are regarded as the main internal components of new type cooling towers with rings.Considering the influence of surrounding radiator heat sources at running state, and taking a 220 m hyperbolic indirect air cooling tower which is being built in domestic and is the world’s tallest one as an example, based on the computational fluid dynamics method, the internal flow fields of cooling towers with and without inner ring beams were simulated under the wind-thermal coupling effect.The average internal surface pressure distribution characteristics of the cooling towers with and without inner ring beams were discussed, and then the influence of the inner ring beams on the internal pressure evaluation of the cooling tower was summarized.Meanwhile the mechanism for the difference of the inner flow characteristics between the cooling towers with and without inner ring beams was analyzed.Finally the suggested internal pressure of cooling towers with rings under the wind-thermal effect was given.The results show that regardless of the temperature field, the setting of inner ring beams make the absolute values ofinternal pressure coefficients increase by 7.3%, and with consideration of the temperature field the absolute values of internal pressure coefficients decrease by 2.3%. The approprite internal pressure value of cooling towers with rings under the wind-thermal coupling effect is proposed to be -0.42.The main conclusions can be provided as a reference to the design of such cooling towers with rings.
柯世堂,余玮. 内环梁对风热耦合作用下冷却塔内压取值的影响研究[J]. 振动与冲击, 2019, 38(10): 185-192.
Shitang Ke Wei Yu. Influence on the internal pressure evaluation of cooling towers of inner ring beamsconsidering the wind-thermal coupling effect. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(10): 185-192.
[1] Ke S T, Ge Y J, Zhao L. Wind-induced vibration characteristics and parametric analysis of large hyperbolic cooling towers with different feature sizes. Structural Engineering and Mechanics, An International Journal. 2015, 54(5), 891-908.
[2] Zhao L, Chen X, Ke S T, Ge Y J. Aerodynamic and aero-elastic performances of super-large cooling towers[J], Wind and Structures, 2014, 19(4): 443-465.
[3] 张军锋, 葛耀君, 赵林. 加劲环和加劲肋对冷却塔动力特性的影响[J]. 力学与实践, 2014, 36(01): 42-47.
Zhang Junfeng, Ge Yaojun, Zhao Lin. Effects of stiffening rings and ribs on the dynamic properties of cooling towers[J]. Mechanics in Engineering, 2014, 36(01): 42-47.
[4] 张军锋, 葛耀君, 赵林. 基于风洞试验的双曲冷却塔静风整体稳定研究[J]. 工程力学, 2012, 29(05): 68-77.
Zhang Junfeng, Ge Yaojun, Zhao Lin. Study on global aerostatic stability of hyperbolical cooling towers based on the wind tunnel tests[J]. Engineering Mechanics, 2012, 29(05): 68-77.
[5] VGB-Guideline:Structural design of cooling tower-technical guideline for the structural design, computation and execution of cooling tower(VGB-R610Ue)[S]. Essen: BTR Bautechnik Bei Kühltürmen, 2005.
[6] GB/T 50102-2014 工业循环水冷却设计规范[S]. 北京: 中国计划出版社, 2014.
GB/T 50102-2014 Code for design of cooling for industrial recirculating water[S].Beijing: China Plan Press, 2014.
[7] Ke S T, Liang J, Zhao L, et al. Influence of ventilation rate on the aerodynamic interference between two extra-large indirect dry cooling towers by CFD[J]. Wind & Structures An International Journal, 2015, 20(3): 449-468.
[8] 邹云峰, 何旭辉, 谭立新, 陈政清, 牛华伟. 特大型冷却塔单塔内表面风荷载三维效应及其设计取值[J]. 湖南大学学报(自然科学版), 2015, 42(01): 24-30.
Zhou Yunfeng, He Xuhui, Tan Lixin, et al. Three-dimensional effect and design value of inter surface wind loading for single super-large cooling tower[J]. Journal of Hunan University(Natural Sciences), 2015, 42(01): 24-30.
[9] 沈国辉, 张陈胜, 孙炳楠, 楼文娟. 大型双曲冷却塔内表面风荷载的数值模拟[J]. 哈尔滨工业大学学报, 2011, 43(04): 104-108.
Shen Guohui, Zhang Chensheng, Sun Bingnan, et al. Numerical simulation of wind load on inner surface of large hyperbolic cooling tower[J]. Journal of Harbin Institute of Technology, 2011, 43(04): 104-108.
[10] 董国朝, 张建仁, 蔡春声, 韩艳. 考虑内部构件影响的超大型冷却塔内压系数研究[J]. 工程力学, 2016, 33(04): 77-83.
Dong Guochao, Zhang Jianren, Cai Chunsheng, et al. Study of internal surface pressure coefficient of super-large cooling tower with different internal main components[J]. Engineering Mechanics, 2016, 33(04): 77-83.
[11] 马欢, 司风琪, 李岚, 闫文生,祝康平. 间接空冷塔部分冷却扇段关闭热力特性的数值研究[J]. 中国电机工程学报, 2015, 35(18): 4682-4689.
Ma Huan, Si Fengqi, Li Lan, et al. Numerical simulation of thermal performance of indirect dry cooling tower under different operation modes of sectors[J]. Proceedings of the CSEE, 2015, 35(18): 4682-4689.
[12] 席新铭, 王梦洁, 杜小泽, 杨立军, 杨勇平. “三塔合一”间接空冷塔内空气流场分布特性[J]. 中国电机工程学报, 2015, 35(23): 6089-6098.
Xi Xinming, Wang Meijie, Du Xiaoze, et al. Airflow field characteristics in indirect dry cooling tower of three incorporate towers system[J]. Proceedings of the CSEE, 2015, 35(23): 6089-6098.
[13] 柯世堂, 侯宪安, 赵林, 葛耀君. 超大型冷却塔风荷载和风振响应参数分析:自激力效应[J]. 土木工程学报, 2012, 45(12): 45-53.
Ke Shitang, Hou Xianan, Zhao Lin, et al. Parameter analysis of wind loads and wind induced responses for super-large cooling towers: self-excited force effect[J]. China civil engineering journal, 2012, 45(12): 45-53.
[14] 郑水华, 金台, 罗坤, 唐磊, 易超, 樊建人. 逆流式自然通风冷却塔热力性能的三维数值模拟[J]. 中南大学学报(自然科学版), 2013, 44(09): 3898-3903.
Zhen Shuihua, Jin Tai, Luo Kun, et al. Three-dimensional numerical simulation on thermal performance in counter flow natural draft cooling tower[J]. Hournal of Central South University(Science and Technology), 2013, 44(09): 3898-3903.
[15] 孔艳强, 席新铭, 董泽文, 杜小泽, 杨立军. 600MW间接空冷散热器传热及防冻性能[J]. 工程热物理学报, 2015, 36(08): 1785-1789.
Kong Yanqiang, Xi XInming, Dong Zewen, et al. Thermal-hydraulic and anti-freezing performances of heat exchanger of 600 MW indirect dry cooling tower[J]. Journal of Engineering thermophysics, 2015, 36(08): 1785-1789.