用于复杂几何形状中气固流动笛卡尔网格模拟的 TFM-IBM 方法

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science Pub Date : 2025-04-14 DOI:10.1016/j.ces.2025.121637

Yige Liu , Bidan Zhao , Ji Xu , Junwu Wang

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引用次数: 0

摘要

精确模拟具有复杂几何形状的气固流动对于流化床反应器的设计、优化和放大至关重要。鉴于体拟合网格的固有局限性，本研究首次开发了一种双流体模型和沉浸边界法（TFM-IBM）相结合的方法，用于复杂几何形状的笛卡尔网格稠密气固流模拟。为了验证 TFM-IBM 求解器的有效性和准确性，模拟了两个不同形状的圆柱形鼓泡流化床和一个带沉管的流化床。可以看出，TFM-IBM 方法的模拟结果与实验数据和使用 CFD-DEM-IBM 方法获得的数值结果非常吻合，与体拟结构网格相比，可以达到相同或更高的精度。该求解器对气固流动连续模型的工程应用具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A TFM-IBM method for Cartesian grid simulation of gas-solid flows in complex geometries

Accurate simulation of gas-solid flows with complex geometries is critical for fluidized bed reactor design, optimization, and scaleup. Given the inherent limitations of body-fitted meshes, this study developed, for the first time, a combined two-fluid model and immersed boundary method (TFM-IBM) approach for Cartesian grid simulation of dense gas-solid flows with complex geometries. Two cylindrical bubbling fluidized beds with different shapes and a fluidized bed with immersed tubes were simulated to verify the effectiveness and accuracy of the TFM-IBM solver. It can be observed that the simulation results of TFM-IBM approach are in a good agreement with the experimental data and the numerical results obtained using CFD-DEM-IBM method, and can achieve the same or better accuracy than those of a body-fitted structured mesh. The solver has significant implications for the engineering applications of continuum model of gas-solid flows.

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来源期刊

Chemical Engineering Science 工程技术-工程：化工

CiteScore

7.50

自引率

8.50%

发文量

1025

审稿时长

50 days

期刊介绍： Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline. Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.