This paper studies the interaction of an Antarctic Circumpolar Current (ACC)–like wind-driven channel flow with a continental slope and a flat-bottomed bay-shaped shelf near the channel’s southern boundary. Interaction between the model ACC and the topography in the second layer induces local changes of the potential vorticity (PV) flux, which further causes the formation of a first-layer PV fr...

The present paper deals with the effects of Ohmic dissipative Casson fluid flow over a stretching sheet in the presence of aligned magnetic field. The present phenomenon also includes the interaction of thermal radiation and velocity slip. The governing boundary layer equations are transformed into a set of ordinary differential equations using the similarity transformations. The dimensionless ...

This paper examines interaction between a barotropic point vortex and a steplike topography with a bayshaped shelf. The interaction is governed by two mechanisms: propagation of topographic Rossby waves and advection by the forcing vortex. Topographic waves are supported by the potential vorticity (PV) jump across the topography and propagate along the step only in one direction, having higher ...

Using Monte Carlo techniques, the critical Binder cumulant U∗ of isotropic nearest–neighbour Ising models on square and triangular lattices is studied. For rectangular shapes, employing periodic boundary conditions, U∗ is found to show the same dependence on the aspect ratio for both lattice types. Similarly, applying free boundary conditions for systems with square as well as circular shapes f...

Tip leakage loss introduces major part of losses of the rotor in axial gas turbines. Therefore, the rotor blade tip has a considerable effect on rotor efficiency. To understand the flow physics of the rotor tip leakage, we solve the flow field for different tip platforms (passive flow control) and by considering coolant tip injection (active flow control). Various blade tip configurations s...

Quantum mechanical boundary conditions along a timelike line, corresponding to the origin in radial coordinates, in two-dimensional dilaton gravity coupled to N matter fields, are considered. Conformal invariance and vacuum stability severely constrain the possibilities. The simplest choice found corresponds to a nonlinear Liouville-type boundary interaction. The scattering of low-energy matter...

Received 30 October 2016 Accepted 15 December 2017 Abstract—Geometric Brownian motion with decision boundaries is used in modelling combat effects such as probability of winning a battle and duration of a battle. We verify that it is possible to construct a model and analytical mathematical formulas for these quantities. Variables of the model are force sizes at the beginning and at end of a ba...

A unified boundary element method ~BEM! is developed in this paper to model both the exterior acoustic field and the elastic shell-like structure in a coupled analysis. The conventional boundary integral equation ~BIE! for three-dimensional ~3D! elastodynamics is applied to thin shell-like structures which can have arbitrary shapes and small thicknesses. The nearly singular integrals existing i...

As a native scheme to evaluate hydrodynamic force in the lattice Boltzmann method, the momentum exchange method has some excellent features, such as simplicity, accuracy, high efficiency and easy parallelization. Especially, it is independent of boundary geometry, preventing from solving the Navier–Stokes equations on complex boundary geometries in the boundary-integral methods. We review the o...

The problem o f t h e i n t e r a c t i o n o f d i s loca t ions w i t h g r a i n boundaries i s d i s cussed on t h e bas is o f t h e concept o f g r a i n boundary non-equi l ibr ium s t a t e generat ion and recovery. According t o t h i s concept, trapped l a t t i c e d is loca t ions , being non-equil i b r i u m defects , are absorbed by t h e boundaries as they d issoc ia te i n t o ...