Stratification on the Vertical Structure of the Tidal Ellipse and Power Density Estimation in the Larantuka Strait, East Flores Based on ADCP Measurement Data
Stratification on the Vertical Structure of the Tidal Ellipse and Power Density Estimation in the Larantuka Strait, East Flores Based on ADCP Measurement Data
复制标题
DOI：
10.1088/1755-1315/750/1/012023
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
H. Siagian;A. Ismanto;T. W. Putra;Pranata
中科院分区：
文献类型：
--
作者：
H. Siagian;A. Ismanto;T. W. Putra;Pranata
在沿海海洋学中，特别是在开发可再生能源的功率密度时，需要了解潮汐椭圆的潮流分层。通过优化势能（海平面）和动能（潮流），可以将水体的运动转换为功率密度。潮流与分层之间的相互作用对优化各深度层的能量转换（以及涡轮机的选择）具有重要意义。垂直结构上的分层可以用潮汐椭圆的半长轴、半短轴、旋转方向、椭圆度、倾斜角和相位的变化来描述。在拉兰图卡海峡进行了ADCP测量，以研究垂直深度层上的潮汐行为。M2分潮在各分潮中振幅最大，以直线分潮为主，是拉兰图卡海峡最活跃的分潮。近地层M2分量长轴最高，与S2分量相比分别为243.7cm/s、128.9cm/s;大多数椭圆顺时针旋转74°，因为当前椭圆的方向是倾斜的。估算的功率密度转换显示>20.000 kW/m2，大潮条件下的功率密度平均值为5014.9 Watt/m2。随着潮汐椭圆的深度层、长短轴、倾斜角和潮汐相位的变化，近表层的功率密度退化。
An understanding of tidal current stratification with a tidal ellipse in coastal oceanography is needed, especially in the development of power density for renewable energy. The movement of the water mass can be converted into power density, by optimizing potential energy (sea level) and kinetic energy (tidal currents). Interaction between tidal current and stratification layer has been of importance to optimize the energy conversion (also turbine selection) at each depth layer. The stratification on the vertical structure can be described by variability of the tidal ellipse, in terms of the semi-major axis, the semi-minor axis, the direction of rotation, ellipticity, inclination angle and phase. ADCP measurement is implemented at Larantuka Strait to examine the tidal behavior on a vertical layer of depth. M2 tidal constituent presents the highest amplitudes among the tidal constituents, predominantly straight line, being the most energetic in Larantuka Strait. M2 constituent the highest major-axis at the near-surface layer when compared with S2 with 243.7 cm/s, 128.9cm/s respectively. Most ellipses rotate clockwise 74° as inclination characterizes the current ellipse orientation. Estimation power density conversion is shown >20.000 kW/m2, with power density average 5014.9 Watt/m2 in spring tide condition. Power density degenerates at the near-surface layer following changes in the depth layer, major-minor axis, inclination angle, and tidal phase of the tidal ellipse.