Zahoor Iqbal

The goal of this present work is to produce a computational model to discover the Cu – water nanofluid flow patterns and heat transfer features through a wavy chamber via a different cross-section cylinder. A finite element method based on the Galerkin weighted residual technique solves the nonlinear governing equations for the current computational model. We have conducted a parametric exploration to investigate the influence of Rayleigh number (10³ ≤ Ra ≤ 10⁶), several angles of an elliptical cylinder (0° ≤ θ ≤ 90°), aspect ratios (1 ≤ AR ≤ 3), and varied nanofluid volume fractions (0 ≤ φ ≤ 0.1). The graphical representation of the numerical results, such as streamlines, isotherm contours, the angle of elliptical cylinders, and the average Nusselt number as it relates to the rate of heat transfer. The present research and a prior publication agree strongly. The results show that the heat transfer rate increases with the angle of orientation and aspect ratio for each value. The vertical direction of an elliptical cylinder significantly enhanced the rate of heat transfer. The result indicates that for mutually pure water and nanoparticles, the maximum heat transmission rate appears at θ = 90°, AR = 3.0, λ = 5, φ = 4%, and Ra = 10⁶. The undulation effectiveness reaches its highest at an undulation number of 5.

This paper explores natural convection heat removal performance in accordance with the variation of the baffle size and position in a skewed cavity. In this skewed cavity, the top and bottom walls are considered to be adiabatic. The inclined left wall is deliberated at a sinusoidal cool temperature, and the other wall is treated at a hot temperature. The baffle is connected to the hot temperature wall. The dimensionless governing equations will be solved by the Galerkin weighted residual (GWR) technique of the finite element method. The influence of Rayleigh number ([ ]), baffle sizes ([ ], 0.35, and 0.50), and baffle positions ([ ], 0.50, and 0.75) in a fluid with [ ] were investigated in this research. The comparisons between the outcome of this work and previously published work in a literature review by Elatar et al. ⁸ have been produced to examine the reliability and consistency of the data. The results of the simulation are represented by streamlines, isotherms, local and mean Nusselt numbers, mean fluid temperature, and baffle effectiveness. The results demonstrate that as the Rayleigh number grows, the heat removal performance rate continues to develop in this study. Also, the results revealed that the heat transport rate decreased when gradually raising the baffle length. Baffles can significantly improve the mixing of fluid inside the enclosure, which can mean reductions in reaction times and operating costs, along with increases in heat exchange and efficiency.

Significance: Heat transport in the blood within a wedge-shaped artery is significant in biomedical engineering field like develop therapeutic strategies, drug delivery to specific regions of the artery, vicinity of narrowed or blocked arteries and catheter-based treatments such as angioplasty or thermal ablation. Motive: This study investigates the heat transport analysis of trihybrid nanofluid (blood) over wedge-shaped artery with mathematical model of Cross fluid. This study incorporates three nanoparticles, graphene oxide (GO), titanium dioxide (TiO₂), and aluminum oxide (Al₂O₃) in base fluid blood. The wedge-shaped artery is chosen due to its relevance to biomedical applications and it reflects the nature of blood flow in real vascular structures. Heat transport is scrutinized through thermal radiations and flow rate is inspected through inclined magnetic field. Methodology: The bvp4c and Levenberg–Marquardt Neural Network (LM-NN) supervised neural scheme is used to predict the numerical outcome of this study. Findings: Incorporation of nanoparticles made rapid heat transport of blood in wedge-shaped artery. Velocity of blood is decreased with high Weissenberg number and magnetic force. The temperature of a blood in a wedge-shaped artery increases with positive non-uniform heat source/sink parameters and decreases with negative non-uniform heat source/sink parameters.