Abstract
This study tries an application of pulsating airflow to a novel cooling method of electronic equipment using fans. In this report, the flow and heat transfer characteristics around a cylindrical obstruction, which simulates electronic components, mounted in a rectangular enclosure was investigated experimentally in order to evaluate the effectiveness of the pulsating airflow. Through heat transfer experiment and flow visualization, it was found that the pulsating airflow achieved almost same heat transfer performance as the steady airflow when the integrated flow rate of the steady airflow was 15% smaller than that of the pulsating flow. Therefore, we conclude that the pulsating airflow is effective for cooling electronic equipment when the airflow is generated in an appropriate manner.
