2024
DOI: 10.1063/5.0187058
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Droplet coalescence kinetics: Thermodynamic non-equilibrium effects and entropy production mechanism

Guanglan Sun,
Yanbiao Gan,
Aiguo Xu
et al.

Abstract: The thermodynamic non-equilibrium (TNE) effects and the relationships between various TNE effects and entropy production rate, morphology, kinematics, and dynamics during two initially static droplet coalescences are studied in detail via the discrete Boltzmann method. Temporal evolutions of the total TNE strength D¯* and the total entropy production rate can both provide concise, effective, and consistent physical criteria to distinguish different stages of droplet coalescence. Specifically, when the total TN… Show more

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Cited by 6 publications
(1 citation statement)
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“…It should be pointed out that the last aforementioned difference is the key reason why the DBM has been developed. The DBM is derived from the nonequilibrium statistical physics and has been successfully applied to investigate compressible reacting flows [7][8][9][10][11][12][13][14][15][16][17][18], multiphase [40][41][42][43], and fluid instabilities [44][45][46][47][48][49][50][51][52], etc. In 2013, the pioneering DBM for combustion was developed by using a hybrid scheme, and the hydrodynamic and thermodynamic nonequilibrium effects were investigated around the detonation wave [7].…”
Section: Introductionmentioning
confidence: 99%
“…It should be pointed out that the last aforementioned difference is the key reason why the DBM has been developed. The DBM is derived from the nonequilibrium statistical physics and has been successfully applied to investigate compressible reacting flows [7][8][9][10][11][12][13][14][15][16][17][18], multiphase [40][41][42][43], and fluid instabilities [44][45][46][47][48][49][50][51][52], etc. In 2013, the pioneering DBM for combustion was developed by using a hybrid scheme, and the hydrodynamic and thermodynamic nonequilibrium effects were investigated around the detonation wave [7].…”
Section: Introductionmentioning
confidence: 99%