Schmidt, Johannes Benedikt ; Breitenbach, Jan ; Roisman, Ilia V. ; Tropea, Cameron (2022)
Interaction of drops and sprays with a heated wall.
In: Droplet dynamics under extreme ambient conditions
doi: 10.1007/978-3-031-09008-0_17
Buchkapitel, Bibliographie
Kurzbeschreibung (Abstract)
Spray-wall interactions take place in many technical applications such as spray cooling, combustion processes, cleaning, wetting of surfaces, coating and painting, etc. The outcome of drop impact onto hot surfaces depends on a variety of parameters like for example material and thermal properties of the liquid and wall, substrate wetting properties, surrounding conditions which determine the saturation temperature, spray impact parameters and surface temperature. The aim of the current project is to improve knowledge of the underlying physics of spray-wall interactions. As an important step towards spray impact modeling first a single drop impact onto hot substrates is considered in detail. Various regimes of single drop impact, such as thermal atomization, magic carpet breakup, nucleate boiling and thermosuperrepellency, observed at different wall temperatures, ambient pressures and impact velocities, have been investigated experimentally and modelled theoretically during the project period. The heat flux, an important parameter for spray cooling, has been modeled not only for single drop impacts but also for sprays within many regimes. The models show a good agreement with experimental data as well as data from literature.
| Typ des Eintrags: | Buchkapitel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Schmidt, Johannes Benedikt ; Breitenbach, Jan ; Roisman, Ilia V. ; Tropea, Cameron |
| Art des Eintrags: | Bibliographie |
| Titel: | Interaction of drops and sprays with a heated wall |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Ort: | Cham |
| Verlag: | Springer International Publishing |
| Buchtitel: | Droplet dynamics under extreme ambient conditions |
| Reihe: | Fluid mechanics and its applications |
| Band einer Reihe: | 124 |
| DOI: | 10.1007/978-3-031-09008-0_17 |
| Kurzbeschreibung (Abstract): | Spray-wall interactions take place in many technical applications such as spray cooling, combustion processes, cleaning, wetting of surfaces, coating and painting, etc. The outcome of drop impact onto hot surfaces depends on a variety of parameters like for example material and thermal properties of the liquid and wall, substrate wetting properties, surrounding conditions which determine the saturation temperature, spray impact parameters and surface temperature. The aim of the current project is to improve knowledge of the underlying physics of spray-wall interactions. As an important step towards spray impact modeling first a single drop impact onto hot substrates is considered in detail. Various regimes of single drop impact, such as thermal atomization, magic carpet breakup, nucleate boiling and thermosuperrepellency, observed at different wall temperatures, ambient pressures and impact velocities, have been investigated experimentally and modelled theoretically during the project period. The heat flux, an important parameter for spray cooling, has been modeled not only for single drop impacts but also for sprays within many regimes. The models show a good agreement with experimental data as well as data from literature. |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet Strömungslehre und Aerodynamik (SLA) 16 Fachbereich Maschinenbau > Fachgebiet Strömungslehre und Aerodynamik (SLA) > Tropfendynamik und Sprays |
| TU-Projekte: | DFG|TRR75|TP C4 TRR 75 |
| Hinterlegungsdatum: | 15 Mai 2023 06:19 |
| Letzte Änderung: | 15 Mai 2023 12:08 |
| PPN: | 507765494 |
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