This paper describes numerical implementation and validation of a newly developed hybrid model, T-blob/T-TAB, into an existing computational fluid dynamics (CFD) program for primary and secondary breakup simulation of liquid jet atomization. This model extends two widely used models, the Kelvin-Helmholtz (KH) instability of Reitz (the “blob” model) (1987, Atomization Spray Technol., 3, pp. 309–337) and the Taylor-Analogy-Breakup (TAB) secondary droplet breakup of O’Rourke and Amsden (1987, SAE Technical Paper No. 872089) to include liquid turbulence effects. In the primary breakup model, the level of the turbulence effect on the liquid breakup depends on the characteristic scales and flow conditions at the liquid nozzle exit. Transition to the secondary breakup was modeled based on energy balance, and an additional turbulence force acted on parent drops was modeled and integrated into the TAB governing equation. Several assessment studies are presented, and the results indicate that the existing KH and TAB models tend to underpredict the product drop size and spray angle, whereas the current model provides superior results when compared to the measured data.
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e-mail: Huu.P.Trinh@nasa.gov
e-mail: cchen@che.uah.edu
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October 2007
Technical Papers
Numerical Simulation of Liquid Jet Atomization Including Turbulence Effects
Huu P. Trinh,
Huu P. Trinh
Engineering Directorate,
e-mail: Huu.P.Trinh@nasa.gov
NASA—Marshall Space Flight Center
, Huntsville, AL 35812
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C. P. Chen,
C. P. Chen
Department of Chemical & Materials Engineering,
e-mail: cchen@che.uah.edu
University of Alabama in Huntsville
, Huntsville, AL 35899
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M. S. Balasubramanyam
M. S. Balasubramanyam
Department of Chemical & Materials Engineering,
University of Alabama in Huntsville
, Huntsville, AL 35899
Search for other works by this author on:
Huu P. Trinh
Engineering Directorate,
NASA—Marshall Space Flight Center
, Huntsville, AL 35812e-mail: Huu.P.Trinh@nasa.gov
C. P. Chen
Department of Chemical & Materials Engineering,
University of Alabama in Huntsville
, Huntsville, AL 35899e-mail: cchen@che.uah.edu
M. S. Balasubramanyam
Department of Chemical & Materials Engineering,
University of Alabama in Huntsville
, Huntsville, AL 35899J. Eng. Gas Turbines Power. Oct 2007, 129(4): 920-928 (9 pages)
Published Online: March 20, 2007
Article history
Received:
November 3, 2005
Revised:
March 20, 2007
Citation
Trinh, H. P., Chen, C. P., and Balasubramanyam, M. S. (March 20, 2007). "Numerical Simulation of Liquid Jet Atomization Including Turbulence Effects." ASME. J. Eng. Gas Turbines Power. October 2007; 129(4): 920–928. https://doi.org/10.1115/1.2747253
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