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Investigation on detachment of oil droplets driven by water shear field on solid surfaces with different wettability
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  • Yunrui Han,
  • Limin He,
  • Shipeng Wang,
  • Xiaoming Luo
Yunrui Han
Shandong University

Corresponding Author:[email protected]

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Limin He
China University of Petroleum East China - Qingdao Campus
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Shipeng Wang
China University of Petroleum East China - Qingdao Campus
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Xiaoming Luo
China University of Petroleum East China - Qingdao Campus
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Abstract

The movement and detachment of tiny oil droplets in water on the substrate is the key technology to strengthen oil-water separation by using corrugated plate oil-water separation technology. Here, the detachment behaviors of oil droplets adhered on substrates with different wettability in laminar flow field is studied experimentally and theoretically. The morphologic changes of mother and daughter oil droplets are obtained when the adhered oil droplets are continuously separated. The shedding mechanism of oil droplets is deeply analyzed, and the critical condition for the effective detachment of the oil droplet is obtained, which can be used to guide the design of the surface wettability and water flow velocity in the actual production.