English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The flow in a two-dimensional cavity with a free surface and a bottom opening on a channel stream is numerically calculated.The calculated results are compared with experimental data measured in the vertical openings of ship models. The calculations are performed using GSMAC-FEM. The arbitrary Lagrangian-Eulerian formulation is applied to deal with the free surface motion. To test the algorithm used in the present calculation, three cases of the fluid problem are examined: normal cavity flow, free oscillation of water in a tank, and the run up height of a solitary wave on a tank wall. In the three cases, the calculation results show good agreements with previously published data. Using the present calculation algorithm, the flow in a cavity with a free surface and a bottom opening to a channel flow is calculated and the following conclusions are obtained: (1) Vertical oscillations of the free surface in the cavities are observed in the numerical calculation when there are two vertical cavities with the free surface on the upper wall of a channel flow. (2) The stream velocities of the free surface motion in the numerical calculation are the same as those of the experimental results measured in the vertical opening of ship models at the dimensionless speed, 2U/(Lω0) or 1/(πSt).

Flow Calculation in Vertical Cavity with Free Surface and Bottom Opening to Water Stream