Yifei Yu – författare

This book presents the importance of the mechanism of hairpin vortex formation to understanding flow transition, turbulence, and flow control. This book blends direct numerical simulation (DNS) and mathematical analysis with experiments to create a foundation for understanding turbulence. The authors discuss hairpin vortex as a main component of transitional flow and turbulent flow. In addition, Liutex is utilized and described as a theoretical system that presents valid tools for turbulence research. Readers are exposed to understanding 3D and non-linear instability; the Lambda vortex formation; sweeps, ejections, and shear instability; the Kelvin-Helmholtz instability and vortex ring formation; and turbulence generation and sustenance.

This book presents the importance of the mechanism of hairpin vortex formation to understanding flow transition, turbulence, and flow control. This book blends direct numerical simulation (DNS) and mathematical analysis with experiments to create a foundation for understanding turbulence. The authors discuss hairpin vortex as a main component of transitional flow and turbulent flow. In addition, Liutex is utilized and described as a theoretical system that presents valid tools for turbulence research. Readers are exposed to understanding 3D and non-linear instability; the Lambda vortex formation; sweeps, ejections, and shear instability; the Kelvin-Helmholtz instability and vortex ring formation; and turbulence generation and sustenance.

This book presents the importance of the mechanism of hairpin vortex formation to understanding flow transition, turbulence, and flow control. This book blends direct numerical simulation (DNS) and mathematical analysis with experiments to create a foundation for understanding turbulence. The authors discuss hairpin vortex as a main component of transitional flow and turbulent flow. In addition, Liutex is utilized and described as a theoretical system that presents valid tools for turbulence research. Readers are exposed to understanding 3D and non-linear instability; the Lambda vortex formation; sweeps, ejections, and shear instability; the Kelvin-Helmholtz instability and vortex ring formation; and turbulence generation and sustenance.

This book compiles a selection of outstanding papers presented at ICLVIM 2024 held on 9-11 August in Suzhou, China. Liutex is a mathematical definition of vortex, first proposed by Dr. Chaoqun Liu in 2018. In the six years since then, significant changes have taken place in how scientists perceive Liutex. Initially met with skepticism and opposition, Liutex has now gained recognition and support within the scientific community.Six years ago, the primary focus of researchers was the validity of the Liutex definition. Scholars scrutinized the concept from various perspectives, examining it with cautious skepticism. Today, however, many researchers have embraced Liutex as a precise and unique mathematical framework for defining vortices. As a result, Liutex has been integrated into a wide range of research fields.The International Conference on Liutex-Based Vortex Identification Methods was organized against this backdrop of growing acceptance. It is gratifying to note that, according to conference reports, Liutex has found applications in diverse areas including hydrodynamics, tropical cyclones, magnetospheric dynamics, large eddy simulations, gas-solid flows, supersonic tip vortices, and ice-covered channel flows. Given that vortices are ubiquitous across numerous disciplines, Liutex holds great promise for future applications.