基于SCHISM的钱塘江河口弯道环流数值模拟
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黄姿菡(1993-),女,浙江义乌人,工程师,硕士,主要从事水力学及河流动力学研究。E-mail:pisceshzh@163.com |
收稿日期: 2025-05-22
修回日期: 2025-09-24
网络出版日期: 2025-11-04
基金资助
国家自然科学基金-山东省人民政府联合基金(U2006227)
浙江省自然科学基金联合基金资助项目(LZJWZ23E090008)
浙江省水利科技计划项目(RB2201)
浙江省水利河口研究院数字化改革项目(ZIHESZH23006)
院长基金项目(ZIHE23Q015)
Numerical Simulation of Curved Channel Circulation in the Qiantang River Estuary Based on SCHISM
Received date: 2025-05-22
Revised date: 2025-09-24
Online published: 2025-11-04
黄姿菡 , 程文龙 , 李志永 , 朱润野 , 张芝永 , 陈甫源 . 基于SCHISM的钱塘江河口弯道环流数值模拟[J]. 长江科学院院报, 2025 . DOI: 10.11988/ckyyb.20250465
To investigate the circulation patterns in curved channels of macrotidal estuaries, a three-dimensional hydrodynamic model of the Wenyan reach in the Qiantang River Estuary was established using SCHISM. The temporal and spatial distributions of longitudinal velocity, transverse water surface slope, and circulation intensity in the Wenyan bend were simulated and analyzed during both flood and tidal periods. The computational efficiency of the curved-channel circulation model was also evaluated. The results demonstrate that SCHISM exhibits good applicability and high efficiency in simulating flow in curved channels of macrotidal estuaries. The transverse slope in the bend varies significantly with tidal fluctuations during flood tide, showing a bimodal pattern, Whereas its variation is relatively mild during ebb tide, with the maximum transverse slope being significantly smaller than that during flood tide. The circulation intensity is higher near the bend apex and decreases toward both ends. Under typical conditions, both the transverse slope and circulation intensity in the bend are primarily governed by tidal dynamics.
Key words: Qiantang River estuary; bend; lateral slope; secondary flow intensity; SCHISM
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