On the role of liquid viscosity in affecting droplet spreading on a smooth solid surface
| Autor: | Chenglong Tang, Peng Zhang, Mengxiao Qin, Tong Shangqing, Zuohua Huang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Fluid Flow and Transfer Processes
Materials science Mechanical Engineering Solid surface media_common.quotation_subject Dynamics (mechanics) Liquid viscosity General Physics and Astronomy 02 engineering and technology Mechanics Inertia 01 natural sciences Ohnesorge number 010305 fluids & plasmas Physics::Fluid Dynamics Viscosity 020303 mechanical engineering & transports Dual role 0203 mechanical engineering 0103 physical sciences Weber number media_common |
| Zdroj: | International Journal of Multiphase Flow. 117:53-63 |
| ISSN: | 0301-9322 |
| DOI: | 10.1016/j.ijmultiphaseflow.2019.05.002 |
| Popis: | The role of liquid viscosity on droplet spreading behavior upon impacting on a smooth stainless steel surface has been experimentally investigated. Results show the droplet spreading dynamics with increasing viscosity (characterized by the Ohnesorge number, Oh) exhibits complex dependence on the impact inertia (characterized by Weber number, We). Specifically, for a small impact inertia (We 240), droplet splashing emerges and then vanishes with increasing Oh, although βmax still decreases monotonically. All the observed phenomena imply that liquid viscosity may have a dual role in affecting the droplet spreading, which previous models of βmax do not take into account. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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