Harbour seals can use their vibrissal system to detect and follow hydrodynamic trails left by moving objects. In this study we determined the maximum time after which a harbour seal could indicate the moving direction of an artificial fish tail and analysed the hydrodynamic parameters allowing the discrimination. Hydrodynamic trails were generated using a fin-like paddle moving from left to rig...

In this paper, the two-dimensional Benney system describing long wave propagation of a finite depth fluid motion and the multi-dimensional Russo-Smereka kinetic equation describing a bubbly flow are considered. The Hamiltonian approach established by J. Gibbons for the one-dimensional Vlasov kinetic equation is extended to a multi-dimensional case. A local Hamiltonian structure associated with ...

We present a model of optical communication system for high-bitrate data transmission in the nonreturn-to-zero (NRZ) format over transoceanic distance. The system operates in a small group velocity dispersion regime, and the model equation is given by the Whitham equations describing the slow modulation of multi-phase wavetrains of the (defocusing) nonlinear Schrödinger (NLS) equation. The mode...

Along with the technology development of ocean resources, offshore platforms are gradually becoming larger and more complex. Recent oil gas field in deep-water region often involves multiple floating adjacent to each other perform complex functions for production. This paper describes investigation carried out on dynamic responses a two system containing Tension Leg Platform (TLP) tender assist...

A numerical procedure to determine the equivalent hydrodynamic dispersion coefficients and Péclet number (Pe) of a fractured rock is presented using random walk particle tracking method. The geometrical effects of fracture system on hydrodynamic dispersion are studied. The results obtained from the proposed method agree well with those of empirical models, which are the scale-dependent hydrodyn...

We study collisions between two strongly interacting atomic Fermi gas clouds. We observe exotic nonlinear hydrodynamic behavior, distinguished by the formation of a very sharp and stable density peak as the clouds collide and subsequent evolution into a boxlike shape. We model the nonlinear dynamics of these collisions by using quasi-1D hydrodynamic equations. Our simulations of the time-depend...

Квазигидродинамическая (КГД) система была предложена автором в 1993 году. Она имеет глубокие связи с классическими системамиНавье-Стокса и Эйлера. В настоящей работе сформулирован доказан принцип суперпозиции решений для нелинейной квазигидродинамической системы.С помощью данного подхода найдены точные решения, общие систем Навье-Стокса КГД. Некоторые из этих решенийдля системы построены впервы...