Vertical Displacement Events (VDEs) and plasma current disruptions can seriously degrade the lifetime of in-vessel components in ITER, as large electromagnetic and thermal loads can be induced at such events. Hence, accurate modelling of such events is crucial for estimating disruption induced forces. In the past, ITER disruption modelling has been carried out using the DINA code. However, sinc...

Computational studies of vertical displacement events (VDE’s) in shaped tokamaks are presented. The calculations are performed with our nonlinear, 3D resistive MHD code, CTD, which can efficiently treat resistive walls and free boundary displacements in moderately-shaped geometries. This work has a number of related goals: First, the mechanisms for generation of halo currents, the paths taken b...

PURPOSE To determine whether the stiffness characteristics of the leg change during a treadmill run to voluntary exhaustion. METHODS Fifteen runners performed a test run at a constant speed that elicited approximately 80% of their .VO(2peak). The run was performed on a treadmill instrumented to measure vertical ground reaction forces; vertical stiffness and leg stiffness were calculated from ...

Posterior displacement . . . . . . . . . . . . . . . 441 Posterolateral displacement . . . . . . . . . . . . 442 Anterior displacement in adolescents . . . . . . . 442 Anterior displacement in the elderly . . . . . . . . 442 Vertical displacement . . . . . . . . . . . . . . . . 443 Circular displacement . . . . . . . . . . . . . . . . 443 Ageing .of .the .surrounding .tissues . . . . . . . . . ...

b = vortex spacing l = lateral displacement N = Brunt–Väisälä frequency q = root-mean-square turbulence velocity t = time u = axial velocity v = lateral velocity, vertical displacement V = aircraft ground speed w = descent speed, vertical wind velocity x = axial coordinate y = spanwise coordinate z = vertical coordinate = circulation = eddy dissipation rate = potential temperature = standard de...

In this paper we develop a pseudo function approach to obtain relative permeabilities for the numerical simulation of three-dimensional petroleum reservoirs. This approach follows the idea of an experimental approach and combines an analytical solution technique for two-phase flow with a numerical simulation technique for cross-sectional models of these three-dimensional reservoirs. The advanta...

Most robotic hands are either sensorless or lack the ability to accurately and robustly report position and force information relating to contact. This paper describes a robotic hand system that uses a limited set of native joint position and force sensing along with custom designed tactile sensors and real-time vision modules to accurately compute nger contacts and applied forces for grasping ...

the high costs of experimental works on the nanocomposites can be reduced through implementation of analytical and numerical studies. to study the effect of impact energy on the nanocomposites, a nanocomposite composedof polyurethane and clay nanoparticles is selected as a case study. the finite element modeling is carried out using the ansys software, and the impact analysis is performed using...

Similar to random sea waves, forces on the offshore structures due to waves are random. These forces can be mainly divided into two components, namely, inline forces and transverse or lift forces. The random nature of lift forces is more complicated than that of inline forces and both should be combined for design purposes. In the present paper, two different approaches have been used to determ...