Numerical Simulation Method of Time and Space Variations of Sea Wind using GPV and Wind waves and Wind-induced Current

利用GPV和风浪及风感流的海风时空变化数值模拟方法

• 批准号: 12650510
• 负责人: MIZUTANI Norimi
• 金额: $ 0.7万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650510/
• 关键词: GPV; three dimensional DNS; Ise bay; Osaka bay; sea winds; wind waves

It is important to estimate accurately the incident waves to beaches which suffer from severe erosion. In the practical work against beach erosion, a given wave condition like design wave is employed. Thus, it is difficult to predict dynamic behaviors of beached under the excitations of short-term storm waves like Typhoon waves. Also, it may be hard to estimate restoring process of eroded beaches during mild wave conditions. Estimating such phenomena, unsteady wave condition should be taken into account. The driving force of waves is mainly winds over sea. Thus, it is important to investigate wind fields over sea. Based on such background, this study is intended to establish the numerical computation scheme to predict time and space variations of wind field over sea area. In the computation, meteorological data like atmospheric pressure is employed. The data has been given by GPV. Then, the estimation method of the waves from computed wind field has been proposed. Moreover, the field data of wind and waves obtained at Shirahama and Enshunada have been analyzed. Trough the investigation of the field data of wind and waves, a lot of new relationship has been found out. These results are used in the estimation technique of the waves from computed wind field.

对于遭受严重侵蚀的海滩，准确估计入射波是很重要的。在实际防冲滩工作中，通常采用设计波等给定的波浪条件。因此，在台风等短期风暴波的作用下，滩地的动力特性难以预测。此外，在温和的波浪条件下，可能很难估计被侵蚀海滩的恢复过程。估计这种现象时，应考虑非定常波条件。海浪的驱动力主要是海面上的风。因此，研究海上风场具有重要意义。基于此背景，本研究拟建立预测海区风场时空变化的数值计算方案。在计算中，采用了大气压力等气象数据。数据由GPV给出。在此基础上，提出了用计算风场估计波浪的方法。此外，还对白滨和恩顺田的野外风浪资料进行了分析。通过对野外风浪资料的调查，发现了许多新的关系。这些结果可用于计算风场的波浪估计技术。

项目成果

水谷法美, 番場豊和: "伊勢湾周辺海域における海上風の時空間変化の予測に関する研究"土木学会中部支部平成13年度研究発表会講演概要集. 135-136 (2002)

Norimi Mizutani，Toyokazu Bamba：“伊势湾周围海域海风时空变化的预测研究”2001 年研究报告摘要，日本土木工程师学会中部分会 135-136 (2002)。

Norimi Mizutani, Tatsuya Yoshida and Toyokazu Banba: "Study on Estimationof Wind Field over Ise Bay Area"Proc.Civil Engineering in the Ocean, JSCE. Vol.16. 369-374 (2000)

Norimi Mizutani、Tatsuya Yoshida 和 Toyokazu Banba：“伊势湾地区风场估算研究”，海洋土木工程，JSCE。

Norimi Mizutani, Tatsuya Yoshida and Toyokazu Banba: "Wind Simulation in Sea Areas Using GPV and Wind-Wave Correlation Analysis Based on Field Data"Proc.of Coastal Engineering, JSCE. Vol.48. 206-210 (2001)

Norimi Mizutani、Tatsuya Yoshida 和 Toyokazu Banba：“基于现场数据的 GPV 和风波相关分析的海域风模拟”，JSCE 海岸工程学报。

Norimi MIZUTANI and Toyokazu BANBA: "Study on the Numerical Simulation of Sea Wind around Ise Bay Area"Proc.Civil Engineering in the Ocean, JSCE. Vol.18. 215-219 (2002)

Norimi MIZUTANI 和 Toyokazu BANBA：“伊势湾地区海风数值模拟研究”Proc.Civil Engineering in the Ocean，JSCE。

水谷法美, 吉田達哉, 番場豊和: "GPVを利用した海上風の数値計算と観測資料に基づく風と波の相関に関する研究"土木学会海岸工学論文集. 第48巻. 206-210 (2001)

Norimi Mizutani、Tatsuya Yoshida、Toyokazu Bamba：“基于使用 GPV 和观测数据的海洋风数值计算的风与波浪之间的相关性研究”，日本土木工程学会论文集，海岸工程学，第 48 卷，206-210。 (2001)