本文選題：西湖 + 分層流場�。� 參考：《水力發(fā)電學(xué)報》2017年09期

【摘要】：采用浮標(biāo)下掛ADCP儀方法,開展了西湖分層流場的現(xiàn)場觀測,首次通過實測資料證實了西湖垂向環(huán)流的存在。采用EFDC模型對實測風(fēng)場作用下的西湖分層流場進(jìn)行了數(shù)值模擬,垂向流速分布特性的模擬結(jié)果與實測結(jié)果符合較好,表明該模型可以適用于西湖流場的數(shù)值模擬。在2013年西湖實測風(fēng)場分析的基礎(chǔ)上,對比分析了常風(fēng)向東北風(fēng)與西南風(fēng)作用下的西湖分層流場特性,結(jié)果顯示風(fēng)場是影響西湖流場的敏感因素,尤其對表層流場作用明顯。受風(fēng)場作用,東北風(fēng)條件下在外湖湖心與東南近岸水域存在順時針環(huán)流,西南風(fēng)條件下在外湖湖心與東南近岸水域存在逆時針環(huán)流。湖區(qū)流速為mm/s~cm/s,且分布不均勻,其中進(jìn)、出水口及近岸水域流速相對較大,湖心流速較小。
[Abstract]:The field observation of the stratified flow field in the West Lake was carried out by means of the ADCP instrument under the buoy. The existence of the vertical circulation in the West Lake was confirmed by the measured data for the first time. The EFDC model is used to simulate the stratified flow field in the West Lake under the action of wind field. The simulation results of vertical velocity distribution are in good agreement with the measured results, which indicates that the model can be applied to the numerical simulation of the flow field in the West Lake. Based on the analysis of the measured wind field in the West Lake in 2013, the characteristics of the stratified flow field in the West Lake under the action of the northeasterly wind and the southwest wind are compared and analyzed. The results show that the wind field is a sensitive factor affecting the flow field in the West Lake, especially the surface flow field. Under the action of wind field, there exists clockwise circulation in the outer lake center and southeast coastal waters under the northeast wind condition, and counterclockwise circulation in the outer lake center and southeast coastal waters under the southwest wind condition. The velocity of the lake is mm / s / cm / s, and its distribution is not uniform. The velocity of the inlet, outlet and inshore waters is relatively large, and the velocity of the center of the lake is relatively small.
【作者單位】： 浙江省水利河口研究院;
【基金】：浙江省科技廳院所專項(2017F30006) 浙江省重大科技專項(2015C03007) 浙江省水利廳科技計劃項目(RA1602)
【分類號】：TV221
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本文編號：1781113