Moving of a submarine under an ice cover in fluid of finite depth

doi:10.1007/S42241-018-0143-1

Paper

Moving of a submarine under an ice cover in fluid of finite depth

Published Nov 30, 2018 · A. Pogorelova, V. Zemlyak, V. Kozin

Journal of Hydrodynamics

32

Citations

1

Influential Citations

Full text Semantic Scholar

Abstract

AbstractThe influence of a basin depth on ice cover deflections, when a submarine moves under it in fluid, is experimentally and theoretically analyzed. For a theoretical research the ice cover is modelled by an elastic floating plate, and the submarine is modelled by a source-sink system in a fluid flow. The problem is solved by means of asymptotic analysis and integral transformations. The experimental study is conducted with submarine models in the pool with the sizes L × B × H = 10 m × 3 m × 1 m . The ice cover for experiments is modelled in two ways. The first way is the thin ice plate received by freezing of the surface layer of water at low temperatures. In the second case the rubber sheet floating on a reservoir surface is used. The special velocity (the velocity at which maximum values of the wave height are reached) is analyzed. It is obtained that the decrease of the basin depth leads to decrease of the special speed. For small speeds (less than the special speed) there is the fact that the basin depth decrease leads to the increase of the height of the flexural-gravity wave.

Study Snapshot

Key takeawayDecreased basin depth leads to decreased special speed and increased flexural-gravity wave height for submarines moving under ice covers in fluid.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

Moving of a submarine under an ice cover in fluid of finite depth

References

Citations