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High-Order Splitting Scheme for Simulating Regularized Bingham Fluid Flow Using Spectral Element Methods

delete2025-09-01
delete0
PRE
AI
P
Parsaei, Mehran *
M
Mohammad Sefid
A
Ali Akbar Dehghan
E
Ehsan Izadpanah
A
Azadeh Jafari *
DOI：10.1142/S0219876225500410delete
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摘要

摘要

En 中文
本研究提出了一种高阶分裂格式，用于模拟正则化宾汉流体流动，旨在提高精度同时降低计算成本。所提出的方法通过使用谱元法（SEM）进行空间离散化和Adams-Bashforth格式进行时间积分，有效处理非线性应力-应变关系。采用基于速度修正的分裂方法实现高效的压力-速度耦合。与低阶方法相比，本方法在保持高精度的同时显著提升了计算效率。该方法通过与半解析泊肃叶流解进行验证。我们研究了雷诺数和宾汉数对速度剖面、压降、应力和表观粘度的影响。结果表明非屈服区域的应力呈线性行为，为正则化宾汉流体动力学提供了更深入的理解。
Keyword:
Spectral element methods
viscoplastic fluids
Bingham fluid
regularization technique
high-order splitting scheme

期刊

I
International Journal of Computational Methods
IF:
1.6
论文数:
83
被引数:
1.6K

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