Islam Tarikul, Alam Md Nur, Asjad Muhammad Imran, Parveen Nazma, Chu Yu-Ming
Department of Mathematics, Bangabandhu Sheikh Mujibur Rahman Science and Technology University, Gopalganj, 8100, Bangladesh.
Department of Mathematics, Pabna University of Science and Technology, Pabna, Bangladesh.
Sci Rep. 2021 May 26;11(1):10972. doi: 10.1038/s41598-021-89814-z.
Temperature transfer by virtue of natural convection for visualizing heat transport characteristics through heatline method within a prismatic cavity filled with Cu-HO nanofluid considering two different temperature boundary conditions is performed numerically. Two top inclined walls are warmed-up at low temperature whilst the bottom wall is heated two different heated conditions such as uniform temperature condition and linear temperature condition. Two vertical walls are insulated. Finite element technique of Galerkin weighted residual form is employed for solving nonlinear partial differential equations for numerical calculation. Heatlines, isotherm contours, streamline contours, and Nusselt number are employed for displaying numerical simulated results for the model parameters entitled nanoparticles volume fraction, Hartmann number and Rayleigh number. The outcomes indicate that heat transfer rate has a significant impact on thermal boundary condition and shape of the nanoparticles. The temperature transfer value enhances significantly for higher Rayleigh number as well as nanoparticles volume fraction. Hartmann number has a positive impact on fluid flow and temperature transport. The characteristics of heat transport using heatlines method are also performed for predicting the better energy transform compared to isotherm contours. In addition, different types of nanofluids are also employed to examine the best heat transport performance.
考虑两种不同的温度边界条件,对充满铜 - 水纳米流体的棱柱形腔内通过热线法可视化热传输特性的自然对流温度传递进行了数值模拟。两个顶部倾斜壁在低温下升温,而底部壁在两种不同的加热条件下加热,即均匀温度条件和线性温度条件。两个垂直壁隔热。采用伽辽金加权残值形式的有限元技术求解非线性偏微分方程进行数值计算。利用热线、等温线轮廓、流线轮廓和努塞尔数来展示针对纳米颗粒体积分数、哈特曼数和瑞利数等模型参数的数值模拟结果。结果表明,传热速率对热边界条件和纳米颗粒形状有显著影响。对于较高的瑞利数以及纳米颗粒体积分数,温度传递值显著提高。哈特曼数对流体流动和温度传输有积极影响。与等温线轮廓相比,使用热线法预测更好的能量转换的热传输特性也得到了研究。此外,还使用了不同类型的纳米流体来研究最佳的热传输性能。