TITLE:
Direct Numerical Simulation of a Jet Issuing from Rectangular Nozzle by the Vortex in Cell Method
AUTHORS:
Tomomi Uchiyama, Masahiro Kobayashi, Shouichiro Iio, Toshihiko Ikeda
KEYWORDS:
Rectangular Jet; Vortex in Cell Method; DNS; Vortical Structure
JOURNAL NAME:
Open Journal of Fluid Dynamics,
Vol.3 No.4,
December
4,
2013
ABSTRACT: Direct numerical simulation of a jet issuing from a nozzle having a rectangular cross-section is conducted. The vortex in cell (VIC) method, of which computational accuracy was heightened by the authors in a prior study, is used for the DNS. The aspect ratio of the nozzle cross-section is 15, and the Reynolds number based on the shorter side length of the nozzle exit is 6700. The turbulence statics, such as the mean velocity and the turbulence intensity, are favorably compared with the experimentally measured results. The behavior of the large-scale eddies as well as the development of the turbulent flow is also confirmed to agree with the measurement. These indicate that the authors’ VIC method is successfully employed for the DNS of rectangular jet.