Evaporation of a deformable droplet under convection
Fuente:
arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866918176865910784 |
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| author | Salimnezhad, Faraz Muradoglu, Metin |
| author_facet | Salimnezhad, Faraz Muradoglu, Metin |
| contents | Evaporation of a deformable droplet under convection is investigated and the performance of the classical and Abramzon-Sirignano (A-S) models is evaluated. Using the Immersed Boundary/Front-Tracking (IB/FT) method, interface-resolved simulations are performed to examine droplet evaporation dynamics over a wide range of Reynolds ($20 \leq Re \leq 200$), Weber ($0.65 \leq We \leq 9$), and mass transfer ($1 \leq B_M \leq 15$) numbers. It is shown that flow in the wake region is greatly influenced by the Stefan flow, as higher evaporation rates lead to earlier flow separation and a larger recirculation zone behind the droplet. Under strong convection, the models fail to capture the evaporation rate, especially in the wake region, which leads to significant discrepancies compared to interface-resolved simulations. Droplet deformation greatly influences the flow field around the droplet and generally enhances evaporation, but the evaporation rate remains well correlated with the surface area. The A-S model exhibits reasonably good performance for a nearly spherical droplet but its performance deteriorates significantly and generally underpredicts the evaporation rate as droplet deformation increases. The A-S model is overall found to outperform the classical model in the presence of significant convection. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_17547 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Evaporation of a deformable droplet under convection Salimnezhad, Faraz Muradoglu, Metin Fluid Dynamics Evaporation of a deformable droplet under convection is investigated and the performance of the classical and Abramzon-Sirignano (A-S) models is evaluated. Using the Immersed Boundary/Front-Tracking (IB/FT) method, interface-resolved simulations are performed to examine droplet evaporation dynamics over a wide range of Reynolds ($20 \leq Re \leq 200$), Weber ($0.65 \leq We \leq 9$), and mass transfer ($1 \leq B_M \leq 15$) numbers. It is shown that flow in the wake region is greatly influenced by the Stefan flow, as higher evaporation rates lead to earlier flow separation and a larger recirculation zone behind the droplet. Under strong convection, the models fail to capture the evaporation rate, especially in the wake region, which leads to significant discrepancies compared to interface-resolved simulations. Droplet deformation greatly influences the flow field around the droplet and generally enhances evaporation, but the evaporation rate remains well correlated with the surface area. The A-S model exhibits reasonably good performance for a nearly spherical droplet but its performance deteriorates significantly and generally underpredicts the evaporation rate as droplet deformation increases. The A-S model is overall found to outperform the classical model in the presence of significant convection. |
| title | Evaporation of a deformable droplet under convection |
| topic | Fluid Dynamics |
| url | https://arxiv.org/abs/2507.17547 |