Publicou 6 edições por ano
ISSN Imprimir: 1948-2590
ISSN On-line: 1948-2604
ALGORITHM FOR INITIATION OF LAMINAR-TURBULENT TRANSITION IN NUMERICAL SIMULATION OF FLOW ON THE BASIS OF RANS EQUATIONS
RESUMO
This paper is devoted to development of the "transition initiator" numerical algorithm, which may be used in calculations of flows with boundary layers on the basis of RANS equations. This algorithm "switches off" the source terms of the turbulence model upstream from the surface, where the laminar-turbulent transition begins, and gradually "switches them on" downstream from this critical surface. The quest for a satisfactory version of such an algorithm is described. For each version of the initiator, a brief description of the basic ideas is given, and the reasons for rejection of each intermediary version are explained. Also, a stable algorithm for estimation of boundary layer thickness in non-uniform flows is described.