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

علوم کاربردی و محاسباتی در مکانیک

Article 6, Volume 34, Issue 3 - Serial Number 29, October 2022, Pages 97-112   

Document Type: Original Article

DOI: 10.22067/jacsm.2022.74523.1082

Authors

HOJJAT DANANDEH OSKUEI^{* 1}; Seyed Esmail razavi¹; Seyed Faramarz ranjbar¹; Zhaleh Azhdarzadeh²

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

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

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

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