ISSN:
0271-2091
Keywords:
boundary layer
;
heat transfer
;
turbulence
;
CFD
;
finite elements
;
Engineering
;
Engineering General
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
This paper presents an efficient finite element method for solving the unsteady Navier-Stokes equations for turbulent incompressible flow coupled with thermal problems. This method has been implemented in the N3S code, developed at Electricité de France. The time discretization is first described. We precise then the Chorin and the ‘projected Uzawa’ algorithms used for the Stokes problem. Recent improvements concerning the optimization of finite element calculations are also detailed. The second part deals with the modelling of the thermal boundary layer used to simulate walls with fixed temperature in turbulent flows. The differences with other modelling suggested in the literature are discussed. The last part presents some applications. EDF is involved in the conception of heating or cooling systems and numerical methods constitute a very useful tool to study the movements of air in habitations. The calculations are validated by comparisons with measurements.
Additional Material:
14 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/fld.1650200605
