Numerical analysis of fluid-body interaction considering vortex and tornado-like flows

被引:0
作者
Aguirre, Miguel Angel [1 ]
Braun, Alexandre Luis [1 ]
Awruch, Armando Miguel [1 ]
机构
[1] Univ Fed Rio Grande Sul PPGEC UFRGS, Programa Posgrad Engn Civil, Porto Alegre, RS, Brazil
关键词
Computational Wind Engineering (CWE); Tornado Flows; Finite Element Method (FEM); Large Eddy Simulation (LES); Vortex Profile Models; CIRCULAR-CYLINDER; SIMULATION; BUILDINGS; MODELS; TIME;
D O I
10.1590/1679-78257419
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
A numerical analysis of fluid-body interaction is performed in this work in order to evaluate the influence of vortex and tornado-like flows on immersed objects. Velocity profile models are adopted to generate vortical flow fields based on time-dependent boundary conditions and a finite element formulation is used for spatial discretization, where eight-node hexahedral elements with one-point integration are adopted. In addition, an arbitrary Lagrangian-Eulerian (ALE) approach is proposed to describe the relative motion between vortex flow and immersed objects. The flow governing equations are discretized using an explicit two-step Taylor-Galerkin scheme and tornado flow fields are simulated using the Rankine Combined Vortex Model (RCVM) and the Vatistas Model. Turbulence modeling is performed using Large Eddy Simulation (LES) with the Smagorinsky's sub-grid scale model. Problems involving moving and stationary tornadoes interacting with fixed and moving objects are analyzed, where significant aerodynamic forces are observed on the immersed bodies, producing also significant changes in the vortex flow characteristics.
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页数:26
相关论文
共 38 条
[1]  
Alrasheedi N.H., 2012, Computer Modeling of the Influence of Structure Plan Areas on Tornado Forces
[2]  
[Anonymous], 1948, Adv Appl Mech, DOI DOI 10.1016/S0065-2156(08)70100-5
[3]  
Beaudan P., 1994, Tech. Rep. No. TF-62
[4]   Finite element simulation of the wind action over bridge sectional models: Application to the Guama River Bridge (Para State, Brazil) [J].
Braun, A. L. ;
Awruch, A. M. .
FINITE ELEMENTS IN ANALYSIS AND DESIGN, 2008, 44 (03) :105-122
[5]   A partitioned model for fluid-structure interaction problems using hexahedral finite elements with one-point quadrature [J].
Braun, Alexandre Luis ;
Awruch, Armando Miguel .
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, 2009, 79 (05) :505-549
[6]   The validity of 2D numerical simulations of vortical structures around a bridge deck [J].
Bruno, L ;
Khris, S .
MATHEMATICAL AND COMPUTER MODELLING, 2003, 37 (7-8) :795-828
[7]   Numerical study of wind pressure on low-rise buildings induced by tornado-like flows [J].
Cao, Shuyang ;
Wang, Mengen ;
Cao, Jinxin .
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, 2018, 183 :214-222
[8]  
Chien, 1951, WIND TUNNEL STUDIES
[9]   A numerical method for solving incompressible viscous flow problems (Reprinted from the Journal of Computational Physics, vol 2, pg 12-26, 1997) [J].
Chorin, AJ .
JOURNAL OF COMPUTATIONAL PHYSICS, 1997, 135 (02) :118-125
[10]   A domain-decomposition message-passing approach to transient viscous incompressible flow using explicit time integration [J].
Christon, MA .
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 1997, 148 (3-4) :329-352