Numerical study of the effect of elastic wall vibration mode on internal flow parameters

Document Type : Original Article

Authors

HOJJAT DANANDEH OSKUEI ¹

Seyed Esmail razavi ¹

Seyed Faramarz ranjbar ¹

Zhaleh Azhdarzadeh ²

¹ Mechanical Engineering, University of Tabriz, Tabriz, Iran.

² Mechanical Engineering, Osku Branch, Islamic azad university, Osku, Iran.

10.22067/jacsm.2022.74523.1082

Abstract

In this study, the effect of replacing the elastic wall in a two-dimensional channel for forced convection flow around a circular cylinder surrounded by an incompressible flow has been studied numerically. As the current passes around the hot cylinder and the elastic wall oscillates, the rate of heat transfer changes at any time, which is a function of the vibration conditions of the elastic oscillator. Amplitude, frequency and vibration mode are the main parameters affecting the current passing through the channel. The2refore, in this study, the effect of oscillator vibration in the first, second and third modes has been investigated and in each mode, three different amplitudes and in each amplitude three different frequencies have been investigated and the calculations for two Reynolds numbers 100 and 200 have been solved. Rigid channels are compared. The results show that in the first mode, unlike the second and third modes, the elastic wall oscillation has a great effect on the average Nusselt number, average output temperature and cylinder drag coefficient. in all modes, with increasing amplitude and frequency, the average Nusselt number, the average output temperature and the drag coefficient of the cylinder increase.

Keywords

Fluid-Solid interaction

Navier-Stokes equations

Forced convection

Incompressible flow

Subjects

• Heat transfer

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