TITLE:
Computational Study on Aerodynamic and Thermal Characteristics of a Hot Jet in Parallel Flow
AUTHORS:
Merlin C. Das, Meribeni L. Jungio, N. Haritha, Abhilash Suryan, Heuy Dong Kim
KEYWORDS:
Turbulent Jet, Parallel Flow, Reynold’s Number, Temperature Profiles
JOURNAL NAME:
Open Journal of Fluid Dynamics,
Vol.7 No.3,
September
22,
2017
ABSTRACT:
The study of the migration characteristics of turbulent jets has become relevant
as they are used in a variety of engineering devices and are encountered
in combustion, chemical processes, and processes involving cooling, mixing,
and drying. In several applications, especially in the case of hot streaks in gas
turbines, the knowledge of mixing phenomena becomes crucial from a design
perspective. The purpose of this study is to look into the characteristics of a
round hot jet in a parallel air flow. A jet of hot air injected through a nozzle
into a flow of cold air has been considered. Numerical simulations were carried
out with different hot jet temperatures and two different Reynold’s numbers,
thus aiming at understanding the effect of initial conditions on the mixing
of the jet. The temperature profiles were studied at different sections
downstream of the nozzle. The results are presented in non-dimensional
form.