Investigation of the Multi-particle Arch Formation on the Single Slot of a Sand Filter: CFD–DEM Study in Packed-Bed of Sand Particles

IF 2.7 3区 工程技术 Q3 ENGINEERING, CHEMICAL
Fatemeh Razavi, Ali Mohammadtabar, Carlos F. Lange
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Abstract

In this study, we present a successful application of the Computational Fluid Dynamics–Discrete Element Method (CFD–DEM) for simulating the complex phenomenon of multi-particle arch formation within high-concentration packed-bed environments. We investigate the roles of physical forces in this phenomenon, shedding light on aspects that are challenging to explore through experimentation. Our research is motivated by the desire to comprehend the conditions and parameters influencing the formation, stability, disruption, and reformation of multi-particle sand arches within filter openings. This arching phenomenon serves as an efficient particle retention mechanism, particularly in heavy oil production wells. We delve into factors like particle size, shape, and particle size distribution that may impact multi-particle arch performance. Additionally, we explore the physics behind multi-particle arching by examining the effects of various physical forces on arch performance. Utilizing a Computational Fluid Dynamics–Discrete Element Model, we investigate the multi-particle arching phenomenon under steady-state flow conditions in packed-bed environments. Our approach employs the unresolved coupling method in STAR-CCM+ (Siemens PLM). We test various filter slot geometries, including straight slots, keystone slots, wire-wrapped screens (WWS), and seamed slots, all under laminar flow conditions. Our findings highlight the significance of gravity, inter-particle forces, and interactions between the filter wall and the particles in multi-particle arch formation at both the slot opening and microscale levels. We confirm that a multi-particle arch can be formed within a specific slot width. Interestingly, while maintaining a constant slot width, we observe that the slot length has an insignificant effect on multi-particle arch formation and stability. In summary, our CFD–DEM model successfully simulates and predicts multi-particle arch formation, stabilization, breakage, and reformation, allowing for comprehensive testing of the effects of various parameters. This research offers valuable insights into a complex phenomenon that is crucial in packed-bed filtration systems.

Abstract Image

Abstract Image

砂滤器单槽上多颗粒拱形形成的研究:沙粒填料床的 CFD-DEM 研究
在本研究中,我们介绍了计算流体动力学-离散元素法(CFD-DEM)在模拟高浓度填料床环境中多粒子拱形形成这一复杂现象中的成功应用。我们研究了物理力在这一现象中的作用,揭示了通过实验探索具有挑战性的方面。我们的研究动机是希望了解影响过滤器开口内多颗粒砂拱形成、稳定、破坏和重组的条件和参数。这种拱形现象是一种有效的颗粒截留机制,尤其是在重油生产井中。我们深入研究了可能影响多颗粒拱形性能的粒度、形状和粒度分布等因素。此外,我们还通过研究各种物理力对拱形性能的影响,探索多颗粒拱形背后的物理学原理。利用计算流体动力学-离散元件模型,我们研究了填料床环境中稳态流动条件下的多粒子起拱现象。我们的方法采用了 STAR-CCM+ (Siemens PLM) 中的未解决耦合方法。在层流条件下,我们测试了各种滤槽几何形状,包括直槽、楔形槽、线绕滤网(WWS)和缝合槽。我们的研究结果强调了重力、颗粒间的作用力以及过滤壁和颗粒之间的相互作用在槽口和微观层面上对多颗粒拱形形成的重要作用。我们证实,在特定的槽宽内可以形成多颗粒拱形。有趣的是,在保持槽宽不变的情况下,我们发现槽长对多粒子拱的形成和稳定性影响不大。总之,我们的 CFD-DEM 模型成功地模拟和预测了多粒子拱的形成、稳定、断裂和重整,并对各种参数的影响进行了全面测试。这项研究为了解填料床过滤系统中至关重要的复杂现象提供了宝贵的见解。
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来源期刊
Transport in Porous Media
Transport in Porous Media 工程技术-工程:化工
CiteScore
5.30
自引率
7.40%
发文量
155
审稿时长
4.2 months
期刊介绍: -Publishes original research on physical, chemical, and biological aspects of transport in porous media- Papers on porous media research may originate in various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering)- Emphasizes theory, (numerical) modelling, laboratory work, and non-routine applications- Publishes work of a fundamental nature, of interest to a wide readership, that provides novel insight into porous media processes- Expanded in 2007 from 12 to 15 issues per year. Transport in Porous Media publishes original research on physical and chemical aspects of transport phenomena in rigid and deformable porous media. These phenomena, occurring in single and multiphase flow in porous domains, can be governed by extensive quantities such as mass of a fluid phase, mass of component of a phase, momentum, or energy. Moreover, porous medium deformations can be induced by the transport phenomena, by chemical and electro-chemical activities such as swelling, or by external loading through forces and displacements. These porous media phenomena may be studied by researchers from various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering).
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