Turbulence: Characteristics and its implications in tidal current energy device testing
Turbulence: Characteristics and its implications in tidal current energy device testing
复制标题
湍流：潮流能装置测试的特征及其影响
作者：
P.O. Okorie;Alan Owen
潮汐能转换系统的需要列举除了在其安装和操作中可能的挑战，源于能源设备与其周围环境的相互作用。高度理想化的情况下，各向同性，均匀和稳定的湍流进行了讨论，其偏离真实的流，在潮汐河口观察。介绍了量纲分析的原理和相似性的概念，作为评估潮流能装置试验中尺度效应的工具。更好地了解任何潮汐站点中的湍流结构，可以正确选择与系统相关的无量纲数。湍流特性因地点而异，将能量装置引入环境中会改变地点的速度和压力分布。明确了潮流能量转换过程所必需的无量纲数。
The need for a tidal energy conversion system is enumerated in addition to the possible challenges in its installation and operations, stemming from the interactions of the energy device with its surrounding. The highly idealised case of isotropic, homogenous and stationary turbulence is discussed and its deviation from real flows, as observed in a tidal estuary is presented. Also, the principle of dimensional analysis and the concept of similarity are introduced, as tools to access the effect of scaling in a tidal current energy device testing. A better understanding of the structure of turbulence in any tidal site allows for the right choice of dimensionless numbers that are relevant to the system. Turbulence characteristic differ from site to site and, introducing an energy device into the environment modifies the velocity and pressure distribution of the site. The dimensionless numbers essential for the tidal current energy conversion process are clearly defined.