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首页> 外文期刊>Journal of aerospace engineering >Reynolds Number Effects on Wind-Induced Responses of a 243-m-High Solar Tower in Elastic Wind Tunnel Tests
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Reynolds Number Effects on Wind-Induced Responses of a 243-m-High Solar Tower in Elastic Wind Tunnel Tests

机译：雷诺数对243 m高太阳塔在风洞试验中的风致响应的影响

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摘要

The effects of Reynolds number on the wind-induced responses of a 243-m-high solar tower are modified by increasing the surface roughness of the test model. First, a series of wind tunnel tests on eight types of circular cylinder test models with different surface roughness are carried out to measure the aerodynamic forces. The results show that the most suitable surface roughness for Reynolds number modification in view of the aerodynamic forces is the height (or the width) of the rib d/D = 0.01 and the net distance between adjacent ribs e/D = 0.02. Second, the pressure coefficient around the circumference of the rough test model with d = 1 mm and e = 2 mm are measured to validate the results obtained from force measurement wind tunnel tests. Finally, the wind-induced responses of the 243-m-high solar tower with the selected surface roughness are measured on the basis of elastic wind tunnel tests under a structural damping ratio of 0.3%, 0.7%, 1.0%, 1.5%, and 2.0%. The results show that the RMS wind-induced responses of the solar tower are markedly reduced by taking the effects of Reynolds number into account. However, it seems that the mean wind-induced responses in the along-wind direction have nothing to do with the surface roughness. The wind-induced responses of the rough solar tower decrease with increase of the structural damping ratio. It appears that it is not suitable to totally adopt the current code to determine the wind loads on the solar tower. (c) 2019 American Society of Civil Engineers.
机译：雷诺数对243米高的太阳能塔的风响应的影响通过增加测试模型的表面粗糙度来修正。首先，对具有不同表面粗糙度的八种圆柱测试模型进行了一系列风洞测试，以测量空气动力。结果表明，考虑到空气动力，最适合雷诺数修改的表面粗糙度是肋的高度（或宽度）d / D = 0.01，相邻肋之间的净距离e / D = 0.02。其次，测量在d = 1 mm和e = 2 mm的粗糙测试模型周围的压力系数，以验证从测力风洞测试获得的结果。最后，在弹性风洞试验的基础上，在结构阻尼率为0.3％，0.7％，1.0％，1.5％和1.5％的条件下，测量了具有选定表面粗糙度的243米高太阳塔的风致响应。 2.0％。结果表明，考虑雷诺数的影响，太阳能塔的RMS风致响应显着降低。然而，似乎沿风向的平均风致响应与表面粗糙度无关。随着结构阻尼比的增加，粗糙太阳能塔的风致响应减小。似乎不宜完全采用当前法规来确定太阳能塔上的风荷载。 （c）2019美国土木工程师学会。

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  • 来源
    《Journal of aerospace engineering》 |2019年第4期|04019053.1-04019053.10|共10页
  • 作者

    Liu M.; Li S. Y.; Li H. X.; Li S. K.; Chen Z. Q.;

  • 作者单位

    Hunan Univ, Coll Civil Engn, Key Lab Wind & Bridge Engn Hunan Prov, Changsha 410082, Hunan, Peoples R China;

    Hunan Univ, Coll Civil Engn, Key Lab Wind & Bridge Engn Hunan Prov, Changsha 410082, Hunan, Peoples R China;

    Northwest Elect Power Design Inst Co Ltd, China Power Engn Consulting Grp, Engn, 22 South Tuanjie Rd,Hitech Ind Dev Zone, Xian 710075, Shaanxi, Peoples R China;

    Hunan Univ Sci & Technol, Sch Civil Engn, Xiangtan 411201, Peoples R China;

    Hunan Univ, Coll Civil Engn, Key Lab Wind & Bridge Engn Hunan Prov, Changsha 410082, Hunan, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Reynolds number effects; Solar tower; Vortex-induced vibration; Elastic wind tunnel test; Mean drag coefficient; Modification;

    机译：Reynolds数效应;太阳能塔;涡旋诱导的振动;弹性风隧道试验;平均阻力系数;修改;

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