Chammam Wathek, Farooq Umar, Sediqmal Mirwais, Waqas Hassan, Yasmin Sumeira, Zulfiqar Fakhar, Liu Dong, Khan Shan Ali
Department of Mathematics, College of Science, Majmaah University, 11952, Al-Majmaah, Saudi Arabia.
Department of Mechanical and Computer-Aided Engineering, National Formosa University, Yunlin, Taiwan, R. O. C.
Sci Rep. 2023 Dec 27;13(1):23071. doi: 10.1038/s41598-023-49142-w.
Twisted tape is one of the active thermal proficiency boosting technology which has been deeply examined because to consistent efficiency findings and easy implementations. Thermo-hydraulic effectiveness of tubes fitted with twisted tapes is becoming highly significant. Although twisted tapes can cause swirls and disturb boundary layers, this is the most widely used method for improving convection. In the present attempt, to enhance the heat transfer twisted tape is inserted in tube. In the current modern research, the effect of twisted tape, on the enhancement of thermal transport, Nusselt number and friction factor performance of AIN-AlO/water hybrid nanofluid is evaluating utilizing CFD and ANSYS-FLUENT software. the consequence of twisted pitch 44 mm, 66 mm, 88 mm, 100 mm and Reynolds numbers 800, 1200, 1600 and 2000 on Nusselt number, heat transfer coefficient and friction coefficient have been computed numerically with 0.01 to 0.04 volume friction of nanopowders. The commercial ANSYS-FLUENT code was used in this analysis utilizing the SIMPLE method for pressure-velocity coupling. The [Formula: see text] model and Navier Stokes equations are integrating utilizing finite volume method in ANSYS-FLUENT. It was observed that inserting the twisted tape in tube significantly improves the thermal conductivity as well as friction factor compared with the simple tube without turbulator.
扭带是一种有效的热强化技术，由于其效率结果一致且易于实施，已得到深入研究。装有扭带的管道的热工水力效率变得非常重要。尽管扭带会引起漩涡并扰乱边界层，但这是提高对流最广泛使用的方法。在本实验中，为了增强传热，在管道中插入了扭带。在当前的现代研究中，利用CFD和ANSYS-FLUENT软件评估了扭带对AIN-AlO/水混合纳米流体的热传输增强、努塞尔数和摩擦系数性能的影响。计算了扭距为44毫米、66毫米、88毫米、100毫米以及雷诺数为800、1200、1600和2000时，纳米粉末体积分数为0.01至0.04时对努塞尔数、传热系数和摩擦系数的影响。本分析使用商业ANSYS-FLUENT代码，采用SIMPLE方法进行压力-速度耦合。在ANSYS-FLUENT中，利用有限体积法对[公式：见原文]模型和纳维-斯托克斯方程进行了积分。结果表明，与没有扰流器的简单管道相比，在管道中插入扭带可显著提高热导率和摩擦系数。
