Research

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Highlights

Machine Learning Approach to Model the Thermal and Fluid Flow Characteristics of a Microchannel Heat Sink.

In this study, the primary aim was to enhance the thermal efficiency of the heat exchanger by maximizing heat transfer and minimizing pressure loss. We validated the numerical setups and explored the effects of hexagonal and elliptical-shaped perforations on the heat exchanger's performance.

The results are as follows:

Architecture of an MLP

Temperature contour of the 3rd fin in the direction of flow for Re = 350

Heat transfer coefficient (HTC) versus Re (all HTC values are in W/m2K)

OTP bar plot for various cases at Re = 350 and comparison with relevant recent literature.

Numerical Investigation on Consecutive Charging and Discharging of PCM with Modified Longitudinal Fins in Shell and Tube Thermal Energy Storage

In this work, we tried to determine how six different modifications to rectangular fin designs influence the efficiency of phase change material (PCM) charging and discharging in a shell-and-tube heat exchanger. Our goal was to identify the fin shape that offers the greatest improvement in melting and solidification times. Here are some of the snapshots provided below.

Numerical investigation of the hydrothermal performance of novel pin-fin heat sinks.

In this study, we aimed to enhance heat transfer performance by investigating staggered pin fins with various shapes and perforated designs. We utilized ANSYS Fluent to simulate three-dimensional, incompressible flow and heat transfer within pin fin arrays.

The results are as follows:

Applied boundary conditions

Streamline graphs

Temperature profiles on elliptical perforated hyperboloid fins

Undergraduate Thesis

Title: Enhancement of heat transfer performance through the design of various shaped perforated pin fins and microchannel heat sink.

Supervisor: Dr. Mohammed Rejaul Haque

Timeline: 1 Year (December 2021- December 2022)

Synopsis: This research focused on optimizing the hydrothermal performance of heat exchangers by introducing innovative pin fin designs with various perforations in heat sinks and microchannels of different geometries. The study demonstrated that utilizing composite materials alongside these novel designs significantly enhanced the overall performance.