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首页> 外文期刊>JSME International Journal. Series B, Fluids and Thermal Engineering >Mathematical Simulation of Flexible Fiber Dispersion in a Homogenous Turbulent Flow
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Mathematical Simulation of Flexible Fiber Dispersion in a Homogenous Turbulent Flow

机译：均匀湍流中柔性纤维色散的数学模拟

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摘要

Dispersion of inextensible flexible fibers in a simulated isotropic pseudo- turbulent flow field is studied. Turbulence fluctuation velocities are simulated by the Kraichnan Gaussian random field model. Fibers are assumed to be inextensible but completely flexible. That is, fibers have no stiffness and offer no resistance to bending. In the simulation, a flexible fiber is divided into many segments. Interactions of each element with the adjacent elements are through axial forces that are evaluated as part of the solution. For different fiber diameters, aspect ratios, and initial configurations, deposition velocities are evaluated, and the fiber dispersion is analyzed. An empirical equation for the deposition velocity of flexible fibers is also developed. The results for flexible fiber deposition rate are compared with those for rigid straight fibers and the empirical equation predictions.
机译：研究了不可伸展的柔性纤维在模拟各向同性拟湍流场中的扩散。湍流起伏速度由Kraichnan高斯随机场模型模拟。假定纤维是不可延伸的，但完全柔软。即，纤维不具有刚性并且不提供抗弯曲性。在仿真中，柔性纤维被分成许多段。每个元素与相邻元素的相互作用都是通过轴向力进行的，这些轴向力被视为解决方案的一部分。对于不同的纤维直径，长宽比和初始配置，评估沉积速度，并分析纤维分散度。还建立了柔性纤维沉积速度的经验公式。将挠性纤维沉积速率的结果与刚性直纤维的结果以及经验方程式预测进行了比较。

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