The Rheological and Energy Study of the Blade Torsion Effect in a Vessel Stirred by Two- Blade Impeller

Q2 Mathematics CFD Letters Pub Date : 2024-07-05 DOI:10.37934/cfdl.16.11.8291
youcef Kamla, Houari Ameur, Mousaab Beloudane, zied Driss, Abdessalam Hadjeb
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Abstract

This work presents a comprehensive numerical study on the hydrodynamic behaviour and power consumption of a cylindrical vessel stirred by a two-blade impeller, employing the simulation by the RRF method (Rotation Reference Frame). The study focuses on addressing the issue of power consumption in the context of blade orientation referring to different values equal to α=15°, α=30°, α=45°, α=90°, α=135°, and α=180°. The primary objective is to identify a novel design that promotes effective fluid circulation and exhibits lower energy consumption compared to standard geometries. By employing the commercial CFD code ANSYS CFX 14.0, the research delves into the impact of fluid rheology and blade curvature on mixing efficiency. The validation of the results, achieved by comparing them with data from existing literature, demonstrated a satisfactory agreement. According to our obtained results, it has been observed that the energy consumption decreases when the blade orientation exceeds 90°. This study contributes valuable insights into both blade orientation and Reynolds number effects (ranging from 1 to 100 for laminar flow), with the ultimate goal of proposing innovative designs that optimize fluid mixing efficiency while minimizing the consumed energy.
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双叶叶轮搅拌容器中叶片扭转效应的流变学和能量研究
本研究采用 RRF 方法(旋转参考框架)进行模拟,对双叶叶轮搅拌的圆柱形容器的流体力学行为和功耗进行了全面的数值研究。研究重点是解决叶片方向不同情况下的功率消耗问题,叶片方向的不同值分别为 α=15°、α=30°、α=45°、α=90°、α=135° 和 α=180°。主要目的是确定一种新颖的设计,促进有效的流体循环,并与标准几何形状相比能耗更低。通过使用商业 CFD 代码 ANSYS CFX 14.0,该研究深入探讨了流体流变和叶片曲率对混合效率的影响。通过与现有文献中的数据进行比较,对研究结果进行了验证,结果表明两者的一致性令人满意。根据我们获得的结果,当叶片方向超过 90° 时,能耗会降低。这项研究对叶片方向和雷诺数(层流的雷诺数范围为 1 到 100)的影响都提出了有价值的见解,其最终目标是提出创新设计方案,优化流体混合效率,同时最大限度地降低能耗。
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来源期刊
CFD Letters
CFD Letters Chemical Engineering-Fluid Flow and Transfer Processes
CiteScore
3.40
自引率
0.00%
发文量
76
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