Доступ предоставлен для: Guest
Fourth International Symposium on Turbulence and Shear Flow Phenomena
June, 27-29, 2005, Marriot Hotel, Williamsburg, Virginia, USA

DOI: 10.1615/TSFP4

LARGE EDDY SIMULATION OF COMPRESSIBLE JETS LADEN WITH GROWING ICE PARTICLES

pages 207-212
DOI: 10.1615/TSFP4.350
Get accessGet access

Краткое описание

In order to understand the process of formation of condensation trail (contrail), the flow in the near field of an engine jet is studied by using the Large Eddy Simulation technique. The configuration consists of a hot round jet laden with soot particles. The particles are tracked by the Lagrangian approach and their growth is calculated by a microphysics model of water vapour condensation and ice formation. A series of simulations has been performed with a low Mach number (M = 0.2 ) and a moderate one (M = 1) at realistic Reynolds number (Re = 3.2·106). Whatever the Mach number used the ice crystals first appear at the edges of the jet where the hot and moist flow mixes with the cold and dry ambient air. The simulations show that the growth process is controlled both by the thermal transfers and the mass coupling which are more important for the low Mach number case.

Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции Цены и условия подписки Begell House Контакты Language English 中文 Русский Português German French Spain