Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Flow pattern and pressure drop during air-water flow in horizontal channels with forced vibration
Submission Author:
Fabio Toshio Kanizawa , SP
Co-Authors:
Fabio Toshio Kanizawa, Matheus Constantino, Rian Mauricio Santana
Presenter: Fabio Toshio Kanizawa
doi://10.26678/ABCM.COBEM2023.COB2023-2013
Abstract
This study presents experimental results for flow patterns and pressure drop during air-water flow in horizontal tubes with internal diameters of 3, 6, and 10 mm subjected to forced vibrations with frequencies between 1 and 75 Hz and amplitudes up to 2 g. The condenser and evaporating units of compact air-conditioning systems count with fans and compressors which transmit vibrations to the heat exchangers. Nonetheless, most of the studies available in the open literature for flow patterns, pressure drop, and heat transfer coefficient during boiling and condensation inside horizontal channels are performed for static conditions, with care taken to avoid movement of the test section. Therefore, most of the predictive methods are developed based on experimental databases obtained with static systems, while the operating device might be subject to mechanical vibrations. Hence, this study aims to present experimental results for patterns and pressure drop during air-water flow in horizontal channels subjected to forced vertical vibrations. The results with vibrations are compared with results without vibrations obtained in the same facility aiming to infer the effect of distinct operating parameters on the flow pattern and pressure drop.
Keywords
Flow patterns, pressure drop, Forced vibration, flow pattern
