A high-fidelity method to analyze perturbation evolution in turbulent flows

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A Systematic Method to Analyze Transport Networks: Considering Traffic Shifts

Current network modeling practices usually assess the network performance at specified time interval, i.e. every 5 or 10 years time horizon. Furthermore, they are usually based on partially predictable data, which are being generated through various stochastic procedures. In this research, a new quantitative based methodology which combines combinatorial optimization modeling and transportation...

متن کامل

Multiscale model of gradient evolution in turbulent flows.

A multiscale model for the evolution of the velocity gradient tensor in turbulence is proposed. The model couples "restricted Euler" (RE) dynamics describing gradient self-stretching with a cascade model allowing energy exchange between scales. We show that inclusion of the cascade process is sufficient to regularize the finite-time singularity of the RE dynamics. Also, the model retains geomet...

متن کامل

developing turbulent flows in rectangular channels: a parametric study

the developing turbulent flow in an open channel is a complex three-dimensional flow influenced by the secondary currents and free surface effects and is, therefore, not amenable to analytical solution. this paper aims to study the impact of three key hydraulic parameters (relative roughness, the froude number and the reynolds number) on the establishment length using computational fluid dynami...

متن کامل

A numerical method for DNS/LES of turbulent reacting flows

A spatially non-dissipative, implicit numerical method to simulate turbulent reacting flows over a range of Mach numbers, is described. The compressible Navier–Stokes equations are rescaled so that the zero Mach number equations are discretely recovered in the limit of zero Mach number. The dependent variables are co-located in space, and thermodynamic variables are staggered from velocity in t...

متن کامل

The Nonlinear Galerkin Method: A multi-scale method applied to the simulation of homogeneous turbulent flows

82 Conclusions In this article, we have proposed a multilevel method which treats diierently the large and the small scales of homogeneous isotropic ows. Moreover, we have derived mathematical estimates for all the parameters (cut-oo level, time scales) involved in this dynamical procedure leading to a completely self-adaptive procedure. Firstly, several computations have been conducted in the ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Computational Physics

سال: 2016

ISSN: 0021-9991

DOI: 10.1016/j.jcp.2016.01.017