Aerodynamics of higher solildity vertical axis wind turbines

建议的研究计划是一个调查的空气动力学更高的实度垂直轴风力涡轮机。 密实度是叶片总面积与涡轮机扫掠面积的比率，较高的密实度可用于降低涡轮机转速，从而降低噪音并潜在地降低振动。 然而，这些较高的凝固度导致涡轮机叶片周围和通过涡轮机的更复杂的流动（包括大迎角、动态失速以及大量流动分离和叶片-尾流相互作用）。 该研究是基础实验研究、计算建模和复杂流动开发的结合，通过开发新型非对称叶片型线和叶尖小翼来提高涡轮机效率。 有四个主要目标：

The proposed research program is an investigation of the aerodynamics of higher solidity vertical axis wind turbines. Solidity is the ratio of the total blade area to the turbine swept area, and higher solidities can be used to lower turbine rotational speeds, reducing noise and potentially reducing vibration. However, these higher solidities lead to more complex flows (including high angles of attack, dynamic stall with massive flow separation and blade-wake interactions) around the turbine blades and through the turbine. The proposed research is a combination of fundamental experimental study, computational modeling and the exploitation of the complex flows to improve turbine efficiencies by developing novel asymmetric blade profiles and blade tip winglets. There are four main objectives: