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Atomization and Sprays
Fator do impacto: 1.737 FI de cinco anos: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN Imprimir: 1044-5110
ISSN On-line: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v6.i2.50
pages 211-225

LIMITATIONS OF THE STOCHASTIC APPROACH IN TWO-PHASE TURBULENT FLOW CALCULATIONS

Keh-Chin Chang
Institute of Aeronautics and Astronautics, National Cheng-Kung University, Tainan, Taiwan, Republic of China
Wen-Jing Wu
Institute of Aeronautics and Astronautics, National Cheng-Kung University, Tainan, Taiwan, Republic of China
Muh-Rong Wang
Institute of Aeronautics and Astronautics, National Cheng Kung University, Tainan, Taiwan, Republic of China

RESUMO

Limitations of the stochastic approach, a method widely used in simulating droplet dispersion in turbulence, are examined using two well-defined, two-phase, turbulent flow problems. It is found that the stochastic approach is restricted to flows in which the continuous and dispersed phases can meet each other's correlative condition. Also, use of the steady-state formula of the drag coefficient in the Lagrangian equation of motion for models based on the stochastic approach could cause significant errors in the prediction of complete two-phase turbulent structures, particularly for large droplets.


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