Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Generation of Three-Dimensional Homogeneous Isotropic Turbulence
The characteristics of the incoming turbulence are known to significantly affect the aerodynamic performance of immersed bodies and highly contribute to the overall losses. Due to the broad applicability of free-stream turbulence for defining initial and boundary conditions used in CFD, giving necessary attention to the generation of synthetic turbulent fields is essential for the more accurate development process. The present paper describes a synthetic homogeneous isotropic free-stream turbulence generation method. The method is validated using direct numerical simulations of a doubly periodic streamwise evolving channel, representing the free stream. It is demonstrated that input specification of turbulence intensity and turbulence integral length scale can reproduce realistic and self-consistent turbulence structures of the desired spectrum. By varying numerical and physical parameters, we show free-stream turbulence's spatial and temporal development. This method can be used as an inlet boundary for different types of flow found in industrial applications, like wings and turbine blades. ; QC 20220125
Generation of Three-Dimensional Homogeneous Isotropic Turbulence
The characteristics of the incoming turbulence are known to significantly affect the aerodynamic performance of immersed bodies and highly contribute to the overall losses. Due to the broad applicability of free-stream turbulence for defining initial and boundary conditions used in CFD, giving necessary attention to the generation of synthetic turbulent fields is essential for the more accurate development process. The present paper describes a synthetic homogeneous isotropic free-stream turbulence generation method. The method is validated using direct numerical simulations of a doubly periodic streamwise evolving channel, representing the free stream. It is demonstrated that input specification of turbulence intensity and turbulence integral length scale can reproduce realistic and self-consistent turbulence structures of the desired spectrum. By varying numerical and physical parameters, we show free-stream turbulence's spatial and temporal development. This method can be used as an inlet boundary for different types of flow found in industrial applications, like wings and turbine blades. ; QC 20220125
Generation of Three-Dimensional Homogeneous Isotropic Turbulence
Durovic, Kristina (Autor:in) / Schlatter, Philipp (Autor:in) / Hanifi, Ardeshir (Autor:in) / Henningson, Dan S. (Autor:in)
01.01.2022
Paper
Elektronische Ressource
Englisch
| BASE | 2017
| British Library Online Contents | 2018
Concerning torsion of homogeneous isotropic cylinders
| Engineering Index Backfile | 1946
| BASE | 2019