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非對稱風場對臺風浪模擬效果的比較研究

單位：1. 江蘇省海岸海洋資源開發(fā)與環(huán)境安全重點實驗室河海大學, 江蘇南京 210098;
2. 珠江水利委員會珠江水利科學研究院, 廣東廣州 510611

分類號：P731.33

出版年·卷·期（頁碼）：2020·37·第一期（55-61）

摘要：

分析四象限非對稱風場模型與疊加風場模型的優(yōu)缺點，將模型結(jié)果與實測風速進行對比驗證；利用上述兩種風場模型分別驅(qū)動第三代海浪模式SWAN，對發(fā)生在南海海域的三場臺風浪進行了數(shù)值模擬計算。結(jié)果顯示：四象限非對稱模型關(guān)于風速的計算值與實測值吻合度更高，尤其是當臺風中心距離測站較近時；四象限非對稱模型驅(qū)動SWAN模擬的臺風浪精度優(yōu)于疊加風場模型，適用于南海臺風浪的數(shù)值模擬。

We analyze the advantages and disadvantages of the four-quadrant asymmetric wind model and the superimposed wind model by comparing the numerical results with observations. The two wind models are used to drive the third-generation wave model SWAN to simulate the typhoon waves of three typhoon events in the South China Sea. The results show that the wind speed of the four-quadrant asymmetric wind model coincides better with observations, especially when the typhoon center is close to the observation stations.. The accuracy of typhoon waves driven by the four-quadrant asymmetric model is better than that of the superimposed wind model. As a result, the four-quadrant asymmetric wind field model is more suitable for the numerical simulation of typhoon waves in the South China Sea.

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