A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Unsteady RANS simulations of flow around a bridge section
AbstractThis paper presents the results of unsteady Reynolds-averaged Navier–Stokes (URANS) simulations of flow around a common bridge deck geometry. Computations are performed with a noncommercial unstructured flow solver using two-dimensional hybrid meshes with fine near-wall resolution. The influence of different simulation parameters (grid refinement, time-step size, turbulence modelling) is analyzed, in particular in order to obtain flow solutions independent of spatial and temporal discretization. Results given by a one-equation eddy-viscosity turbulence model and a two-equation explicit algebraic Reynolds stress model are compared. Despite the limits imposed by the URANS approach and the relatively inexpensive two-dimensional computations, satisfactory agreement is found with the experimentally measured forces and pressures. These simulations help to explain the discrepancy between the results of two wind-tunnel test campaigns and show the dramatic influence of non-perfectly sharp edges on the global flow field development. The capability of the numerical approach to capture complex Reynolds number effects is also discussed.
Unsteady RANS simulations of flow around a bridge section
AbstractThis paper presents the results of unsteady Reynolds-averaged Navier–Stokes (URANS) simulations of flow around a common bridge deck geometry. Computations are performed with a noncommercial unstructured flow solver using two-dimensional hybrid meshes with fine near-wall resolution. The influence of different simulation parameters (grid refinement, time-step size, turbulence modelling) is analyzed, in particular in order to obtain flow solutions independent of spatial and temporal discretization. Results given by a one-equation eddy-viscosity turbulence model and a two-equation explicit algebraic Reynolds stress model are compared. Despite the limits imposed by the URANS approach and the relatively inexpensive two-dimensional computations, satisfactory agreement is found with the experimentally measured forces and pressures. These simulations help to explain the discrepancy between the results of two wind-tunnel test campaigns and show the dramatic influence of non-perfectly sharp edges on the global flow field development. The capability of the numerical approach to capture complex Reynolds number effects is also discussed.
Unsteady RANS simulations of flow around a bridge section
Mannini, Claudio (author) / Šoda, Ante (author) / Voß, Ralph (author) / Schewe, Günter (author)
Journal of Wind Engineering and Industrial Aerodynamics ; 98 ; 742-753
2010-06-18
12 pages
Article (Journal)
Electronic Resource
English
Unsteady RANS simulation of wind flow around a building shape obstacle
| Springer Verlag | 2022
Erratum to: Unsteady RANS simulation of wind flow around a building shape obstacle
| Springer Verlag | 2022
RANS and PANEL method for unsteady flow propeller analysis
| British Library Online Contents | 2010
Calculations of Unsteady Flows Around Bodies with Relative Motion Using a Chimera RANS Method
| British Library Conference Proceedings | 1995
Unsteady RANS simulation of a surface piercing propeller in oblique flow
| Elsevier | 2016