JSME International Journal Series B Fluids and Thermal Engineering
Online ISSN : 1347-5371
Print ISSN : 1340-8054
ISSN-L : 1340-8054
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Direct Numerical Simulation of Jet Mixing Control Using Combined Jets
Koichi TSUJIMOTOToshihiko SHAKOUCHIShuji SASAZAKIToshitake ANDO
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2006 Volume 49 Issue 4 Pages 966-973

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Abstract

In order to develop an efficient jet mixing method, direct numerical simulations of combined jets are carried out. The Reynolds number defined with a nozzle diameter is Re=1500. Spatial discretization is performed by adopting a hybrid scheme of a sixth order compact scheme in the streamwise direction and Fourier series in the cross section. The distance between two jets is fixed at six times the jet diameter, and the inclination angle of the jets is changed from 45 to 70deg. The results reveal that the turbulence intensity increases with a decrease in the inclination angle and that the jet width increases viajet excitation. These findings suggest that the diverse requirements of jet mixing control can be satisfied by a flexible combination of jets.

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© 2006 by The Japan Society of Mechanical Engineers
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