直圆管突扩通道内宾汉流体湍流流场的数值研究

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A Numerical Study of Bingham Turbulent Flow in Sudden-Expansion Straight Circular Pipe

1.
North Western Polytechnical University, Xi'an 710072, P. R. China;
2.
Chemical Engineering School, Xi'an Jiaotong University, Xi'an 710049, P. R. China

摘要: 本文依据牛顿流体中建立的标准k-ε湍流模型这一基本思想,考虑宾汉流体的本构方程,建立了适用于求解宾汉流体湍流流动的控制方程.采用压力修正算法,实现了宾汉流体速度场与压力场的关联.在理论研究基础上,对直圆管突扩通道内宾汉流体湍流流动进行了数值研究,并探讨了直圆管突扩通道内宾汉流体湍流流动机理.
- 宾汉流体 /
- 湍流 /
- 数值研究 /
- 流动机理
Abstract: The control equations for the turbulent flow of Bingham flulid are established according to Bingham fluid constitution equation. Pressure field and velocity field are correlated by pressure-correction equation. The numerical computations are performed on Bingham fluid turbulent flow in sudden-expansion straight circular pipe, and the flow mechanisms are discussed.
- Bingham fluid /
- turbulence /
- numerical study /
- flow mechanisms

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