CFD analysis of spray propagation and evaporation including wall film formation and spray/film interactions

Numerical investigation of the spray–mesh–turbulence interactions for high-pressure, evaporating sprays at engine conditions

“…The achievement of well atomized liquid fuel spray and the effectiveness of the evaporation and fuel-air mixing process are of great importance in many industrial processes which include combustion systems, such as rocket engines, gas turbines, industrial furnaces and internal combustion engines (Schmehl et al, 1999;Park and Reitz, 2009). In particular among the latter, a detailed definition of the fuel injection strategy is a primary requisite for the control of the combustion process in Diesel engines in a wide range of operating conditions to preserve high thermal efficiencies and reduce the pollutant emissions.…”

Scaling Relations of Lognormal Type Growth Process with an Extremal Principle of Entropy

“…The theoretical value σ = √ 6/6 was originally derived for this problem by Wu [9] where a large set of experimental data was used to assess this theoretical value. Moreira et al [18] recently analyzed the experimental data of several publications [5,19,20] and showed that σ can be related closely to the theoretical value σ = √ 6/6 given by Wu. According to Moreira et al [18], the data from references [5,19,20] can be fitted as…”

“…Martyushev and Seleznev [12] outlined the restrictions for correct use of this principle, and commented on recent achievements as reported in [13][14][15][16][17]. Though the way of reference [9] to work with Shannon entropy production may not be linked to the principle of maximal rate of entropy production in its strict sense, the value (2) was supported by a large amount of data from droplet splashing by Wu [9] and Moreira et al [18] using the experimental data of several publications [5,19,20]. Moreover, with this theoretical value of σ, Wang et al [21] successfully modelled the number of hospitalized cases during the epidemics of SARS in 2003.…”

Numerical modeling and experimental measurements of water spray impact and transport over a cylinder

“…Over the past decades, a number of studies focusing on single-droplet impact have been conducted (Worthington, 1908;Foote, 1975;Chandra and Avedisian, 1991;Mundo et al, 1995;Pasandideh-Fard et al, 1996;Healy et al, 1996;Mao et al, 1997;Fukumoto et al, 2002;Aziz and Chandra, 2000;Roisman et al, 2002;Kim et al, 2000Kim et al, , 2003Mehdizadeh et al, 2004;Manzello and Yang, 2004;Gentner et al, 2004), as well as studies focusing on the interaction of entire sprays with surfaces (Mundo et al, 1998;Schmehl et al, 1999). The present work takes advantage of work on single-droplet impact to provide predictive relations for the fate of droplets in a spray impinging on a cylinder with an emphasis on the degree to which the cylinder interferes with the downstream transport of the condensed-phase species.…”