A conservative and consistent three-dimensional Cartesian cut-cell method is presented for reducing the spurious pressure oscillations often observed in moving body simulations sharp-interface grid methods. By analysing potential sources of oscillation framework, an improved algorithm proposed temporal discontinuity solid volume change. Strict conservation mass momentum both fluid cut cells enf...

In geographical routing algorithms, mobile nodes rely on geographical position to make routing judgments. Researchers frequently discuss such routing algorithms in (2D) space. However, in reality, mobile nodes spread in (3D) space. In this paper the authors present four new 3D geographical-based routing algorithms Cylinder, Greedy-Cylinder, Cluster-Cylinder, and Greedy-cluster-Cylinder. In Cyli...

objectives: falling is a common problem among the elderly. falling indoors and outdoors is highly prevalent among the iranian elderly. therefore, identification of the contributing factors at home and their modification can reduce falls and subsequent injuries inthe elderly. the goal of this study was to identify the elderly at risk of fall, using the ‘home falls and accident screening tool’ (h...

in this paper, the problem of calculating the stress intensity factor (sif) for an orthotropic thick-walled cylinder with a small radial crack subject to internal pressure is considered. the crack is assumed to be an edge crack on the external radius of the cylinder. the stress intensity factor is calculated by superposition of an uncracked cylinder with uniform stress distribution and a cylind...

Abstract We present an immersed boundary projection method for flow-structure interaction problems involving rigid bodies with complex geometries. Dynamics of a body interacting fluid flow and kinematics other undergoing prescribed motions are coupled implicitly the incompressible vorticity equations. In particular, is formulated in frame reference fixed on under (the target) so that system can...

We present a microfluidic rheometer that uses in situ pressure sensors to measure the viscosity of liquids at low Reynolds number. Viscosity is measured in a long, straight channel using a PDMS-based microfluidic device that consists of a channel layer and a sensing membrane integrated with an array of piezoresistive pressure sensors via plasma surface treatment. The micro-pressure sensor is fa...