ENHANCING HEAT TRANSFER IN CHANNEL FLOW USING SYNTHETIC JETS

• Published in: Jurnal Mekanikal
• Main Author: Azmi H.; Basri M.H.; Ismail N.I.; Pahmi M.A.A.H.; Mat S.C.; Othman R.
• Format: Article
• Language: English
• Published: Penerbit UTM Press 2024
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85214665024&doi=10.11113%2fjm.v47.542&partnerID=40&md5=536a5838042c23784401e8c035356b46

Synthetic jet's effectiveness in flow control, fluid mixing enhancement, and cooling has been established. The current study aims to examine the improvement of fluid blending and heat dissipation rate of two water inlets with varying temperatures in a channel that is disturbed by a synthetic jet at different excitation frequencies. The simulation analysis predicts the temperature distributions and the fully develop the velocity profile along symmetrical plane of the channel with interference of synthetic jet using establish CFD software. The RNG k-ε turbulence model was employed to compute the turbulent flow produced by the synthetic jet. A moving mesh approach was employed to replicate the movement of a synthetic jet diaphragm. The results indicate that the fluid flow behavior in the channel disrupted by the synthetic jet flow. Hence, indicating to an enhance in both the fluid flow velocity and the heat transfer rate. A higher frequency of the actuator enhances fluid mixing and reduces the channel distance required to achieve temperature equilibrium within the channel in comparison to a lower frequency of the actuator. © 2022 Penerbit UTM Press. All rights reserved.