Explicit formula for the Liutex vector and physical meaning of vorticity based on the Liutex-Shear decomposition

• Published in: Journal of hydrodynamics. Series B Vol. 31; no. 3; pp. 464 - 474
• Main Authors: Wang, Yi-qian, Gao, Yi-sheng, Liu, Jian-ming, Liu, Chaoqun
• Format: Journal Article
• Language: English
• Published: Singapore Springer Singapore 01.06.2019
• Subjects: Engineering; Engineering Fluid Dynamics; Hydrology/Water Resources; Numerical and Computational Physics; Simulation; Liutex; Liutex-Shear decomposition; explicit formula of Liutex; Vorticity

In the present study, the physical meaning of vorticity is revisited based on the Liutex-Shear (RS) decomposition proposed by Liu et al. in the framework of Liutex (previously called Rortex), a vortex vector field with information of both rotation axis and swirling strength (Liu et al. 2018). It is...