Event Date
Experimental Fluid Dynamics: Drag Reduction and Flow Visualization
Jeong Jae Kim
Hanbat National University
Abstract:
This seminar presents an overview of comprehensive research in experimental fluid mechanics, focusing on the synergy between wind tunnel test and flow visualization techniques to solve contemporary engineering challenges. The presentation is structured into two primary domains: aerodynamic drag reduction and fluid dynamic approaches to environmental sustainability. In the first part, we investigate aerodynamic drag reduction for commercial vehicles. This research focuses on improving the fuel efficiency of commercial vehicles by analyzing flow separation and wake structures. Utilizing scale-model wind tunnel experiments and Particle Image Velocimetry (PIV), we developed innovative aerodynamic additive devices—such as bio-inspired cab-roof fairings, gap fairings, and boat tails—designed to optimize external flow fields. The second part extends the application of experimental fluid dynamics to environmental issues. By applying flow visualization techniques, we investigated mechanisms for particulate matters (PM) reduction and developed bio-inspired surface designs to enhance water harvesting performance. Through these diverse case studies, this seminar demonstrates how fundamental fluid mechanics research can be translated into practical solutions for enhancing industrial efficiency and addressing global environmental challenges.