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A fluid-structure interaction solver for investigating torsional galloping in solar-tracking photovoltaic panel arrays
Journal of Renewable and Sustainable Energy ( IF 2.5 ) Pub Date : 2020-11-01 , DOI: 10.1063/5.0023757 Ethan Young 1 , Xin He 1 , Ryan King 1 , David Corbus 1
Journal of Renewable and Sustainable Energy ( IF 2.5 ) Pub Date : 2020-11-01 , DOI: 10.1063/5.0023757 Ethan Young 1 , Xin He 1 , Ryan King 1 , David Corbus 1
Affiliation
Solar-tracking photovoltaic arrays are susceptible to aeroelastic fluttering during high-wind events. This dynamic fluttering behavior can grow in amplitude until the panels enter an unstable mode known as torsional galloping which can lead to panel failure or total array destruction. To better understand the physics of the torsional galloping phenomenon and to inform the discussion around panel design and recommended panel stow positions during high wind events, a fluid-structure interaction solver composed of a simulated atmospheric boundary layer with simplified panel structural responses was designed. The simulation choices and features of this solver were informed by the geometry and physical properties of an experimental panel array known to exhibit torsional galloping behavior during hind-wind events. These simulations revealed that the torsional galloping instability is driven by a combination of cyclic vortex shedding from the sun-facing side of the panel and the elastic properties of the torque tube linking the panel assemblies. Testing different stow angles across a range of wind speeds indicates that panels are generally more stable when stowed at negative angles where the leading edge is closer to the ground, hypothesized to be due to ground-blocking effects. These results are supplemented by a discussion of stability trends noted during testing and possible implications when considering multi-row array interactions.
中文翻译:
一种流固耦合求解器,用于研究太阳跟踪光伏电池板阵列中的扭转驰骋
太阳跟踪光伏阵列在大风事件期间容易受到气动弹性颤振的影响。这种动态颤动行为的幅度会增加,直到面板进入称为扭转飞驰的不稳定模式,这可能导致面板故障或整个阵列破坏。为了更好地理解扭转飞驰现象的物理原理,并为围绕面板设计的讨论以及在大风事件期间推荐的面板存放位置提供信息,设计了一种流固耦合求解器,该求解器由具有简化面板结构响应的模拟大气边界层组成。该求解器的仿真选择和功能由已知在逆风事件期间表现出扭转飞驰行为的实验面板阵列的几何形状和物理特性决定。这些模拟表明,扭转飞驰不稳定性是由面板朝阳侧脱落的循环涡旋和连接面板组件的扭矩管的弹性特性共同驱动的。在一定风速范围内测试不同的装载角度表明,在前缘更接近地面的负角度装载时,面板通常更稳定,假设是由于地面阻挡效应。对测试期间注意到的稳定性趋势以及考虑多行阵列交互时可能产生的影响的讨论对这些结果进行了补充。在一定风速范围内测试不同的装载角度表明,在前缘更靠近地面的负角度装载时,面板通常更稳定,假设是由于地面阻挡效应。对测试期间注意到的稳定性趋势和考虑多行阵列交互时可能产生的影响的讨论对这些结果进行了补充。在一定风速范围内测试不同的装载角度表明,在前缘更接近地面的负角度装载时,面板通常更稳定,假设是由于地面阻挡效应。对测试期间注意到的稳定性趋势以及考虑多行阵列交互时可能产生的影响的讨论对这些结果进行了补充。
更新日期:2020-11-01
中文翻译:
一种流固耦合求解器,用于研究太阳跟踪光伏电池板阵列中的扭转驰骋
太阳跟踪光伏阵列在大风事件期间容易受到气动弹性颤振的影响。这种动态颤动行为的幅度会增加,直到面板进入称为扭转飞驰的不稳定模式,这可能导致面板故障或整个阵列破坏。为了更好地理解扭转飞驰现象的物理原理,并为围绕面板设计的讨论以及在大风事件期间推荐的面板存放位置提供信息,设计了一种流固耦合求解器,该求解器由具有简化面板结构响应的模拟大气边界层组成。该求解器的仿真选择和功能由已知在逆风事件期间表现出扭转飞驰行为的实验面板阵列的几何形状和物理特性决定。这些模拟表明,扭转飞驰不稳定性是由面板朝阳侧脱落的循环涡旋和连接面板组件的扭矩管的弹性特性共同驱动的。在一定风速范围内测试不同的装载角度表明,在前缘更接近地面的负角度装载时,面板通常更稳定,假设是由于地面阻挡效应。对测试期间注意到的稳定性趋势以及考虑多行阵列交互时可能产生的影响的讨论对这些结果进行了补充。在一定风速范围内测试不同的装载角度表明,在前缘更靠近地面的负角度装载时,面板通常更稳定,假设是由于地面阻挡效应。对测试期间注意到的稳定性趋势和考虑多行阵列交互时可能产生的影响的讨论对这些结果进行了补充。在一定风速范围内测试不同的装载角度表明,在前缘更接近地面的负角度装载时,面板通常更稳定,假设是由于地面阻挡效应。对测试期间注意到的稳定性趋势以及考虑多行阵列交互时可能产生的影响的讨论对这些结果进行了补充。