Eur. Phys. J. Appl. Phys. (2017) 78: 34814
https://doi.org/10.1051/epjap/2017170039

Regular Article

Numerical analysis of single and multiple jets^*

¹ Laboratoire des Sciences et Ingénierie Maritimes, Faculté de Génie Mécanique, Université des Sciences et de la Technologie Mohamed Boudiaf d’Oran, B.P. 1505 Oran El M’naouar, 31000 Oran, Algeria
² Institut Universitaire de Technologie de Longwy, Université Henri Poincaré, Nancy 1, 186 rue de Lorraine, 54400 Cosnes-et-Romain, France

^a e-mail: mustapha.boussoufi@univ-usto.dz

Received: 30 January 2017
Revised: 8 March 2017
Accepted: 9 March 2017
Published online: 12 May 2017

Abstract

The present study aims to use the concept of entropy generation in order to study numerically the flow and the interaction of multiple jets. Several configurations of a single jet surrounded by equidistant 3, 5, 7 and 9 circumferential jets have been studied. The turbulent incompressible Navier-Stokes equations have been solved numerically using the commercial computational fluid dynamics code Fluent. The standard k-ε model has been selected to assess the eddy viscosity. The domain has been reduced to a quarter of the geometry due to symmetry. Results for axial and radial velocities have been compared with experimental measurements from the literature. Furthermore, additional results involving entropy generation rate have been presented and discussed.