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基于潮流场评估的数值模型(tidal flow development,TFD)对大连大小长山岛之间海域的潮流场进行数值模拟,得到该海域沿水深平均的潮流场分布。模型计算和实测结果接近,可得出该海域潮流为明显的往复流,最大流速可达到2 m/s,较适合进行潮流能开发应用。结合有效影响因子SIF评估方法对该海域潮流能进行评估,大潮期间最大瞬时峰值潮流能储量为90 MW,可开发利用总装机容量达到18 MW,年平均发电量3.3×10~7 k Wh。结果表明,该数值模型可有效弥补潮流能流速实测资料不足的问题,为准确评估潮流能储量提供一种有效的方法。
Based on tidal flow development (TFD), the tidal flow field in the sea area between Changshan Island in Dalian and Dalian is numerically simulated and the tidal current distribution along the water depth is obtained. The model calculation and the measured results are close, we can draw a clear reciprocating flow in this area. The maximum flow velocity can reach 2 m / s, which is more suitable for the development and application of power flow. The tidal current energy of the sea area is evaluated with the SIF method. The maximum instantaneous peak tidal current energy reserves during the tide is 90 MW, the total exploitable capacity is 18 MW, and the annual average power generation is 3.3 × 10 ~ 7 k Wh. The results show that this numerical model can effectively make up for the shortage of measured data of tidal current velocity and provide an effective method for accurately evaluating tidal current energy reserves.