Simulation of Vortex Heat Transfer Enhancement in the Turbulent Water Flow in the Narrow Plane-Parallel Channel with an Inclined Oval-trench Dimple of Fixed Depth and Spot Area
Sergey Isaev,
Alexandr Leontiev,
Yaroslav Chudnovsky,
Dmitry Nikushchenko,
Igor Popov,
Alexandr Sudakov
Affiliations
Sergey Isaev
Saint-Petersburg State University of Civil Aviation, Pilots Str. 38, Saint-Petersburg 196210, Russia
Alexandr Leontiev
Bauman Moscow State Technical University, 2nd Bauman Str. 5/1, Moscow 105005, Russia
Yaroslav Chudnovsky
Gas Technology Institute, 1700 S Mount Prospect Road, Des Plaines, IL 60018, USA
Dmitry Nikushchenko
Saint-Petersburg State Marine Technical University, Lotsmanskaya, 3, Saint-Petersburg 190121, Russia
Igor Popov
A. N. Tupolev Kazan National Research Technical University (Kazan Aviation Institute), Kazan 420111, Russia
Alexandr Sudakov
Saint-Petersburg State University of Civil Aviation, Pilots Str. 38, Saint-Petersburg 196210, Russia
This article is devoted to the development of the multiblock technique for numerical simulation of vortex heat transfer enhancement (VHTE) by inclined oval-trench dimples. Special attention is paid both to the analysis of numerical predictions of different-type boundary conditions at the wall: T = const and q = const and to the comparison of the standard and modified shear stress transport models. The article discusses the mechanism of change in the flow structure and secondary flow augmentation due to an increase in a relative length of an oval-trench dimple (at its fixed spot area, depth and orientation) where a long spiral vortex is formed.
