Abstract: In recent years, research on effective methods for enhancing heat transfer has significantly increased. One of the key factors influencing heat transfer is the use of ultrasonic waves. Previous studies have primarily focused on convective heat transfer. However, unlike other studies, this research aims to examine the temperature distribution an‎d conductive heat transfer, as well as convective heat dissipation around the rod. Additionally, another goal of this study is to conduct a numerical analysis an‎d formulate expressions for eva‎luating heat transfer behavior. In this experiment, AISI 4140 was selec‎ted as the material due to its industrial applications. Modal analysis in ANSYS was utilized to determine the natural frequency, nodal an‎d antinodal points, an‎d rod dimensions. After manufacturing the component an‎d verifying nodal an‎d antinodal points against the simulation, the experiment was conducted. Given the transient nature of the experiment, the duration was set at 90 minutes, after which the system approached steady-state conditions. The experiment was carried out in three phases: without ultrasonic waves, with ultrasonic waves at 50% power, an‎d with ultrasonic waves at 75% power. Throughout all phases, the applied heating element power was maintained constant at 80 watts. To numerically analyze the effect of ultrasonic waves on heat transfer, the heat transfer process without ultrasound was first examined. Then, the wave equation applied to the rod was analyzed, an‎d the influence of the wave equation on each heat transfer parameter was investigated. The experimental results indicate that ultrasonic waves have a significant impact on temperature distribution, conductive heat transfer, an‎d convective heat dissipation. Furthermore, at high ultrasonic power levels, thermal behavior at nodal an‎d antinodal points becomes noticeable, with a pronounced peak at nodal locations.

حامد رضوي بني , ابوالحسن عسگر شمسي

مصطفي نصيري , مرضيه رضازاده