Improved Understanding of k- Turbulence Model for Non-homogeneous Two-Phase Flows in Industrial Combustor

Authors

  • Nguyen Thanh Hao Industrial University of HoChiMinh City

DOI:

https://doi.org/10.18034/ei.v2i1.203

Keywords:

Turbulence model, Non-homogeneous, Two-phase flows, Turbulent kinetic energy, Turbulent dissipation rate

Abstract

This paper presents development of k-e turbulence model which can be applied for non-homogeneous two-phase turbulent flows. The improvement of governing equations of k-e turbulence model is based on the decomposition of the two-phase flows into the gas phase and the second phase. Thus, the turbulent kinetic energy k and the turbulent dissipation rate e variables in k-e two-equation model are substituted by the turbulent kinetic energy kg of the gas phase, the turbulent kinetic energy kp of the second phase, the turbulent dissipation rate eg of the gas phase and the turbulent dissipation rate ep of the second phase. The new turbulence model is kg-kp-eg-ep four-equation model which can be used to solve all of two-phase flows in nature studies and engineering applications.

 

Downloads

Download data is not yet available.

Author Biography

Nguyen Thanh Hao, Industrial University of HoChiMinh City

Industrial University of HoChiMinh City, Vietnam

References

Blazek, J., Computational Fluid Dynamics: Principles and Applications. Elsevier, 2001.

Chou, P. Y., On Velocity Correlations and the Solutions of the Equations of Turbulent Fluctuations. Quart. of Appl. Math. 3, 1945.

Erlebacher, G., Hussaini, M. Y., Speziale, C. G., and Zang, T. A., Toward the Large-Eddy Simulation of Compressible Turbulent Flows, J. Fluid Mech. 238 (1992) 155-85.

Jones, W. P., Launder, B. E., The Prediction of Laminarization with a Two-Equation Model of Turbulence. Int. Journal of Heat and Mass Transfer, 15, 1972.

Jones, W. P., Launder, B. E., The Prediction of Low Reynolds Number Phenomena with a Two-Equation Model of Turbulence. Int. Journal of heat and mass transfer, 16, 1973.

Launder, B. E., Sharma, B. I., Application of the Energy Dissipation Model of Turbulence to the Calculation of Flow Near a Spinning Disc. Letters in Heat and Mass Transfer, 1, 1974.

Launder, B. E., Spalding, B., The Numerical Computation of Turbulent Flows, Comput. Methods Appl. Mech. Eng. 3, 1974.

Schraiber, A. A., Gas Turbulent Flows, (Naucova Dumca), 1987.

Spalart, P. and Allmaras, S., A One-Equation Turbulent Model for Aerodynamic Flows, AIAA Paper 92-0439, 1992.

Wilcox, D. C., Reassessment of the Scale Determining Equation for Advanced Turbulence Models. AIAA Journal 26, 1988.

--0--

Downloads

Published

2014-06-16

How to Cite

Hao, N. T. (2014). Improved Understanding of k- Turbulence Model for Non-homogeneous Two-Phase Flows in Industrial Combustor. Engineering International, 2(1), 9–20. https://doi.org/10.18034/ei.v2i1.203

Issue

Vol. 2 No. 1 (2014): January - June

Section

Peer Reviewed Articles

License

Engineering International is an Open Access journal. Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal the right of first publication with the work simultaneously licensed under a CC BY-NC 4.0 International License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of their work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal. We require authors to inform us of any instances of re-publication.