A Constitutive Equation of Turbulence

نویسندگان

چکیده

Even though applications of direct numerical simulations are on the rise, today most usual method to solve turbulence problems is still apply a closure scheme defined order. It not case that rising order model always related quality improvement. more, conceptual advantage applying lowest it represents analogous procedure introducing constitutive equation which has brought success many other areas physics. First models were developed in 1920s and seem be outdated by newer more sophisticated mathematical-physical schemes. However, with new knowledge fractal geometry fractional dynamics, worthwhile step back reinvestigate these models. As result this simultaneously generalizations multiscale analysis, first order, nonlinear, nonlocal, Difference-Quotient Turbulence Model (DQTM) was developed. In partial review article work performed authors, theoretical considerations its turbulent flow problems, evidence given DQTM missing (apparent) shear flows.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود 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

Toward a turbulence constitutive relation for rotating ows

In rapidly rotating turbulent ows the largest scales of the motion are in approximate geostrophic balance. Single-point turbulence closures, in general, cannot attain a geostrophic balance. This article addresses and resolves the possibility of constitutive relation procedures for single-point second order closures for a speciic class of rotating or stratiied ows. Physical situations in which t...

متن کامل

Prediction of Work-Piece Constitutive Equation in Hot Rolling of Strip

Dimensional control of the work-piece in steel industry is of important interest. The main aspects in overcoming the thickness control are variations in material strength due to variations in chemical composition, work-piece temperature, reduction and the strain rate applied to the work-piece. In this paper based on the main parameters affecting the rolling force an attempt been made to give a ...

متن کامل

A constitutive equation for the passive properties of muscle.

4 constitutive equation for unstimulated muscle based on nonlinear elastic and linear damping elements is proposed. This equation is solved in closed form to predict creep and stress relaxation in passive muscle and. if combined with an active contractile element in a three-element model. initial response to a sudden change in length or force during an isometric twitch. A stress relaxation expe...

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: Fluids

سال: 2021

ISSN: ['2311-5521']

DOI: https://doi.org/10.3390/fluids6110414