Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-26T22:05:02.336Z Has data issue: false hasContentIssue false
  • English
  • Français

Numerical investigation of thermal characteristics of confined rotating multi-jet

Published online by Cambridge University Press:  30 September 2013

Mohamed Roudane ,
Larbi Loukarfi ,
Ali Khelil  and
Mohamed Hemis
Mohamed Roudane*
Affiliation:
Facultéde Génie Mécanique, USTO, Oran, Algérie
Larbi Loukarfi
Affiliation:
Université Hassiba Benbouali, Chlef, Algérie
Ali Khelil
Affiliation:
Université Hassiba Benbouali, Chlef, Algérie
Mohamed Hemis
Affiliation:
Université de Khemis Meliana, Algérie
*
a Corresponding author: Roudanemoh@yahoo.fr
Get access

Abstract

For using the swirling jet for air conditioning and heating in the premises, knowledge of the thermal characteristics is more than necessary. It is for this objective that the experimental and numerical study was realized. To conduct this study, we designed and built an experimental facility to ensure proper conditions of confinement in which we placed five air blowing devices with adjustable vanes, providing multiple swirling turbulent jet with a swirl number S = 0.4. The jets were issued in the same direction and the same spacing defined between them. This study concerned the numerical simulation of the thermal mixing of confined swirling multi-jets, and examined the influence of important parameters of a swirl diffuser system on the performance characteristics. The experimental measurements are also realized for a confined domain, aiming to determine the axial and radial temperature field. The CFD investigations are carried out by an unstructured mesh to discretize the computational domain. In this work, the simulations have been performed using the finite volume method and FLUENT solver, in which the standard k-ε, K-ε realizable, k-ε RNG and the RSM turbulence model were used for turbulence computations. The validation shows that the K-ε RNG model can be used to simulate this case successfully.

Keywords

Multiple rotating jetthermal characteristicsturbulence modelsventilation improvement
Type
Research Article
Information
Mechanics & Industry , Volume 14 , Issue 4 , 2013 , pp. 317 - 324
Copyright
© AFM, EDP Sciences 2013

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Panda, J., McLaughlin, D.K., Experiments on the instabilities of a swirling jet, Phys. Fluids 6 (1994) 263–276 CrossRefGoogle Scholar
J.M. Beér, N.A. Chigier, Swirling flow in combustion aerodynamics, Krieger, Malabar, Florida, 1972
Escudier, M.P., Keller, J., Recirculation in swirling flow: a manifestation of vortex breakdown, AIAA J. 23 (1985) 111–116 CrossRefGoogle Scholar
W. Leuckel, N. Fricker, The characteristics of swirl-stabilized natural gas flames Part I: Different flame types and their relation to flow and mixing patterns, J. Institute Fuel S (1976) 103–112
Sheen, H.J., Chen, W.J., Jeng, S.Y., Huang, T.L., Correlation of swirl number for a radial type swirl generator, Exp. Therm. Fluid Sci. 12 (1996) 444–451 CrossRefGoogle Scholar
Thielen, L., Hanjalie, K., Janker, H., Manceau, R., Predictions of flow and heat transfer in multiple impinging jets with an elliptic blending second moment closure, Int. J. Heat Mass Transfer 48 (2004) 1583–1598 CrossRefGoogle Scholar
Rady, M., Arquis, E., Heat transfer enhancement of multiple impinging slot jets with symmetric exhaust ports and confinement surface protrusions, Appl. Therm. Eng. 26 (2005) 1310–1319 CrossRefGoogle Scholar
A. Bouziane, A. Khalfi, S. Laouedj, M. Aminallah, Simulation numérique d’un écoulement réactif swirlé par trois modèles de turbulence, 17ème congrès français de mécanique, Troyes, 2005
M. Braikia, L. Loukarfi, L. Djafer, Caractérisation thermique d’un système multi jets rotationnel, 17ème CFM, Troyes, 2005
A. Aroussi, S. Kucukgokoglan, S.J. Pickering, M. Menacer, Evaluation of four turbulence models in the interaction of multi burners swirling, 4th International conference on multiphase flow, New Orleans, Louisiana, USA, 2001
Elbanna, H., Sabbaghj, A., Interaction of two nonequal jets, A.I.A.A J. 24 (1986) 686–687 Google Scholar
Kazuya, T., Miyako, T., L.W. Peter N. Kazuyoshi Swirl and buoyancy effects on mixing performance of baffle-plate-type miniature confined multijet, Int. J. Heat Fluid Flow 31 (2010) 45–56 Google Scholar
Hirai, S., Takagi, T., Higashia, T., Numerical prediction of flow characteristics and retardation of mixing in a turbulent swirling flow, Int. J. Heat Mass Transfer 32 (1989) 121–130 Google Scholar
Protić, Z.D. et al., Novel Methods for Axial Fan Impeller Geometry Analysis and Experimental Investigations of the generated Swirl Turbulent Flow, Therm. Sci. 14 (2010) 125–139 CrossRefGoogle Scholar
A.K. Gupta, D.G. Lilley, N. Syred, Swirl Flows, Abacus Press, London, 1984
Huang, Y., Yang, V., Dynamics and Stability of Lean-Premixed Swirl-Stabilized Combustion, Progr. Energy Combus. Sci. 35 (2009) 293–364 CrossRefGoogle Scholar
FLUENT User’s Guide, 2006