@article{oai:oist.repo.nii.ac.jp:00002547,
 author = {Scapin, Nicolò and Dalla Barba, Federico and Lupo, Giandomenico and Rosti, Marco Edorardo and Duwig, Christophe and Brandt, Luca},
 journal = {Journal of Fluid Mechanics},
 month = {Jan},
 note = {We perform interface-resolved simulations of finite-size evaporating droplets in weakly compressible homogeneous shear turbulence. The study is conducted by varying three dimensionless physical parameters: the initial gas temperature over the critical temperature Tg,0/Tc, the initial droplet diameter over the Kolmogorov scale d0/η and the surface tension, i.e. the shear-based Weber number, WeS. For the smallest WeS, we first discuss the impact on the evaporation rate of the three thermodynamic models employed to evaluate the gas thermophysical properties: a constant property model and two variable-properties approaches where either the gas density or all the gas properties are allowed to vary. Taking this last approach as reference, the model assuming constant gas properties and evaluated with the ‘1/3’ rule is shown to predict the evaporation rate better than the model where the only variable property is the gas density. Moreover, we observe that the well-known Frössling/Ranz-Marshall correlation underpredicts the Sherwood number at low temperatures, Tg,0/Tc=0.75. Next, we show that the ratio between the actual evaporation rate in turbulence and the one computed in stagnant conditions is always much higher than one for weakly deformable droplets: it decreases with Tg,0/Tc without approaching unity at the highest Tg,0/Tc considered. This suggests an evaporation enhancement due to turbulence also in conditions typical of combustion applications. Finally, we examine the overall evaporation rate and the local interfacial mass flux at higher WeS, showing a positive correlation between evaporation rate and interfacial curvature, especially at the lowest Tg,0/Tc.},
 title = {Finite-size evaporating droplets in weakly compressible homogeneous shear turbulence},
 volume = {934},
 year = {2022}
}