Identification of vortex cores of three-dimensional large-vortical structures |
| |
Authors: | Blas Herrera Jordi Pallares |
| |
Institution: | 1. Departament d’Enginyeria Informàtica i Matemàtiques, Universitat Rovira i Virgili, Avinguda Pa?sos Catalans 26, 43007, Tarragona, Spain 2. Departament d’Enginyeria Mecànica, Universitat Rovira i Virgili, Avinguda Pa?sos Catalans 26, 43007, Tarragona, Spain
|
| |
Abstract: | In this paper, we propose a nonlocal method to identify vortex cores in three-dimensional flows as a complement to the existing list of local and nonlocal methods of the bibliography. The method is based on the vector field of the instantaneous rotation of a particle around a center. This center is defined using the Darboux vector field along the path-particle lines; the vortex core is detected using their Frenet–Serret frame. We illustrate the application of the method to identify the core of large-vortical structures in analytical and numerically simulated laminar and turbulent natural convection flows. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|