Optimizing Flow Conditions in Baffled Channels-A CFD Simulation Analysis

Abstract

This study explores the pressure, velocity and fluid flow features within a channel when a rectangular baffle is present, focusing on laminar flow conditions. Computational Fluid Dynamics (CFD) code Fluent is employed to analyze flow characteristics. The comparison includes total pressure and velocity drop, with the analysis conducted under 2D, single-phase, and steady-state conditions. An observation is made on a rectangular-shaped baffle channels. In general a rectangular-shaped baffle channels found to generates a re-circulation zone at its tips, leading to the entrainment of fluid particles in contact with the baffles. Also, the pitch length in a channel with baffles has a significant impact on pressure and velocity profiles. Increasing the pitch length from 60 cm to 70 cm tends to reduce flow resistance and pressure drop, leading to a more uniform pressure distribution along the channel. A detailed study has been conducted, and the results may be beneficial for CFD engineering in the design of thermo-structural members.