Image Analysis of Low Speed Air Flow by Density Correlation Method

Flow analysis of natural convection around a human body

Abstract

This paper focuses on a quantitative flow analysis around a human body which is based on a flow visualization and a digital image processing. The natural convection induced by a human body was visualized by a smoke method and a technique of laser light sheet (LLS). The quantitative velocity data were carried out from the flow visualization images using simplified density correlation method. Influence of a strong upward natural convection due to the presence of the human body is an important factor in the design of a room ventilation.