Title :
Prospects of RANS models with effects multiparameter at modeling of complex non-isothermal flows of viscous media in devices with any configuration of surface
Author :
Kharlamov, S.N. ; Kim, V.Yu. ; Alginov, R.A. ; Silvestrov, S.I. ; Pavlov, S.A.
Author_Institution :
Tomsk Polytech. Univ., Tomsk, Russia
Abstract :
Flow and heat transfer at transport of viscous media in industrial systems, pipelines including fields with any configuration of a wall is rather complex task. In given conditions the basic problem in modelling of turbulent effects is connected with necessity of an exact prediction of pulsated dynamic and thermal structures. Modeling of turbulent flow and heat transfer in pipes and channels with use of turbulent model including the transport equations for a component of full tensor of Reynolds stresses and turbulent heat fluxes with basic base from the differential equations for kinetic energy of turbulence and a characteristic time scale of pulsations of velocity field is presented. It is established that the present closing relations for terms of the higher order in the equations of the ginen model and the base are universal enough and rather successful in description of “thin” turbulent processes and mechanisms: diffusion, generation, dissipation, redistribution and convection in complex spatial flows.
Keywords :
Navier-Stokes equations; channel flow; heat transfer; pipe flow; turbulence; RANS models; Reynolds stress; channel flow; complex nonisothermal flows; heat transfer; industrial systems; pipe flow; pipelines; transport equations; turbulent effects; turbulent flow; viscous media; Educational institutions; Heating; Lead; Nonhomogeneous media; Viscosity; closing relations; heat transfer; hydrodynamics; modeling; recirculated zone; turbulence;
Conference_Titel :
Strategic Technology (IFOST), 2011 6th International Forum on
Conference_Location :
Harbin, Heilongjiang
Print_ISBN :
978-1-4577-0398-0
DOI :
10.1109/IFOST.2011.6021139