Influence of Heel on Bubble Layer at the Plate Bottom

Xiao Shuai Sun; Wen Cai Dong

doi:10.4028/www.scientific.net/AMR.753-755.2683

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 753-755Influence of Heel on Bubble Layer at the Plate...

Influence of Heel on Bubble Layer at the Plate Bottom

Abstract:

In order to study the influence of heel on bubble layer shape and stability, based on Fluent and Mixture model, a numerical model was established to calculate bubble layer shape at the plate bottom at different main flow velocity, air flow rate and heel degree. The influence on bubble layer shape and skin friction reduction rate caused by heel was investigated. The results show that: bubble layer at the plate bottom spreads with the inflow transversely and longitudinally. When there is heel degree, bubble layer drifts to the smaller draft side. As heel degree increases, the drift of bubble layer becomes larger and the skin friction reduction rate decreases greatly. The local skin friction even increases greatly at the plate bottom apart from the air injection board. Both local void ratio and local friction reduction rate decreases in the longitudinal direction along the plate. Local void ratio is bigger than local friction reduction rate and the difference increases in the longitudinal direction along the plate.

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Periodical:

Advanced Materials Research (Volumes 753-755)

Pages:

2683-2688

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.753-755.2683

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Online since:

August 2013

Authors:

Xiao Shuai Sun, Wen Cai Dong

Keywords:

Bubble Layer Shape, Heel, Local Void Ratio, Skin Friction Reduction Rate

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