
福州英华职业学院,福建 福州 350101
Received:14 August 2026,
Revised:2026-09-22,
Accepted:23 September 2026,
Online First:12 October 2026,
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徐菁蔚.生物启发外形调控下三维黏塑性溃坝冲击结构物的动力响应数值模拟分析[J].人民珠江,DOI:10.3969/j.issn.1001-9235.XXXX.XX.001.
XU Jingwei.Numerical simulation analysis on dynamic responses of structures impacted by three‑dimensional viscoplastic dam‑break flows under bio‑inspired shape regulation[J].PEARL RIVER,
徐菁蔚.生物启发外形调控下三维黏塑性溃坝冲击结构物的动力响应数值模拟分析[J].人民珠江,DOI:10.3969/j.issn.1001-9235.XXXX.XX.001. DOI:
XU Jingwei.Numerical simulation analysis on dynamic responses of structures impacted by three‑dimensional viscoplastic dam‑break flows under bio‑inspired shape regulation[J].PEARL RIVER, DOI:10.3969/j.issn.1001-9235...001.
溃坝下泄的泥浆影响范围广且破坏性大,流态区别于清水流动,精细化理清其致灾机理具有现实意义。通过OpenMP构建并行基座,基于Herschel-Bulkley搭建本构模型,采用APPLIC(Approximated PLIC)方法重构自由面,利用自研三维数学模型开展黏塑性溃坝水动力分析,结果发现:当前模型预报结果与物理试验结果具有一致性;非牛顿流体冲击力响应区别于牛顿流体静水压变化,受等效重力控制,冲击力存在非静水压力效应;基于海豹胡须生物启发,通过外形调控,在相同阻水率的情况下,圆柱比方柱的峰值冲击力减少约50%,且冲量大幅减小,流线型圆柱可削弱动量变化进而减少冲量。通过多源数据验证了模型可靠性,阐述了非静水压力效应,链接了生物启发与防灾减灾,可为溃坝灾害链识别与减灾应用提供参考。
The mudflow from dam breaches has a wide impact range and significant destructive power
with flow characteristics distinct from clear water. Precisely elucidating its disaster-causing mechanisms holds practical significance. By constructing a parallel framework using OpenMP and establishing a constitutive model based on the Herschel-Bulkley rheology
the APPLIC (Approximated PLIC) method was employed to reconstruct the free surface. A self-developed three-dimensional mathematical model was utilized for viscoplastic dam breach hydrodynamic analysis
revealing the following findings: the current model's predictions align with physical experimental results; the impact force response of non-Newtonian fluids differs from Newtonian hydrostatic pressure variations
governed by equivalent gravity
and exhibits non-hydrostatic pressure effects. Inspired by seal whisker biologics
adjusting the shape to achieve the same drag coefficient reduced the peak impact force of circular cylinders compared to square cylinders by approximately 50%
while significantly diminishing impulse. The streamlined cylinder mitigated momentum changes
thereby reducing impulse. Multi-source data validated the model's reliability
elucidated non-hydrostatic pressure effects
linked biological inspiration with disaster prevention
and provided references for identifying dam breach disaster chains and mitigation applications.
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