Current study on active flow control and passive flow control

Abstract

Flow control is a very important research direction in the field of fluid dynamics and one of the important research difficulties in the field of aerospace in the 21st century. This study aims to explore the principles and applications of active flow control and passive flow control, and analyze their practical applications in different fields. By conducting a literature review, this study collected and organized relevant literature and papers related to active flow control and passive flow control, and conducted a comprehensive summary and comparison. The research results indicate that both active flow control and passive flow control are of great significance and can improve efficiency or cost-effectiveness through different methods. The development process of active flow control has undergone evolution, and its basic principle is introduced by classifying different methods and technologies, such as bio-inspired mechanics regulation and jet lag, and illustrating their application principles with examples. Passive control methods require additional mechanical structures, such as ribbing, grooving, etc., in the boundary layer. The active control method requires energy input, and the flow control is achieved by controlling the energy input. By understanding and researching the technologies and methods of active flow control and passive flow control, it can provide reference and reference for researchers and engineers in related fields, and promote the development and application of flow control technology.