Sloshing refers to a certain kind of fluid movement that changes as it progresses. It possesses properties are both nonlinear and exceedingly unpredictable, these affect the tank wall. This effect may lead structural wear, which in turn can cause fail. Benzene gasoil liquids used test sloshing liquid accompanying pressure on wall caused by baffles partially full tanks. To attain this, modeling ...

lateral and anterior displacements of mandible may cause malocclusion. the aim of this study was to determine the prevalence of these displacements in a population of 597 childrens age 12 in mashhad secondary schools. displacment of mandible was shown to be in 11.8 percent of the population (6.2 percent anterior and 5.6 percent lateral displacement).anterior displacement of mandible was diagnos...

In this paper the role of solid nonlinearity on fluid–structure interaction (FSI) is studied. First a simple mass-spring-damper system with third-degree spring coupled linear sloshing to study effect nonlinearity. It shows that even both systems show similar behavior in free vibration tests, but caused 50% less amplitude vibration. Then higher order tuned liquid damper which modeled by boundary...

Currently there are no effective methods of obtaining accurate fluid volume measurements in a microgravity environment. Conventional fluid measurement methods rely solely upon gravity to settle the fluid in order to obtain accurate measurements. However, this approach cannot be applied when fluids are within a microgravity environment and experience sloshing. This optical mass gauging system ut...

We study the direct and inverse eigenvalue problems for a pair of harmonic functions with a spectral parameter in boundary and coupling conditions. The direct problem is relevant to sloshing frequencies of free oscillations of a two-layer fluid in a container. The upper fluid occupies a layer bounded above by a free surface and below by a layer of fluid of greater density. Both fluids are assum...

Hydrodynamic simulations of sloshing phenomena often involve the application of slip boundary condition at the wetted surfaces. If these surfaces are curved, the ambiguous nature of the normal vector in the discretized problem can interfere with the application of such a boundary condition. Even the use of consistent normal vectors, preferred from the point of view of conservation, does not ass...

This paper presents a discrete sliding mode observer (DSMO) for state estimation of a class of a second order underactuated system. The estimated states are used to implement the discrete sliding mode control (DSMC). Modified Bartoszewicz’s reaching law is used to synthesize a DSMC. A partially filled liquid container motion coupled with liquid slosh constitutes a class of second order underact...

Time-resolved variations of the ion velocity distribution function (IVDF) are measured in the cylindrical Hall thruster using a novel heterodyne method based on the laser-induced fluorescence technique. This method consists in inducing modulations of the discharge plasma at frequencies that enable the coupling to the breathing mode. Using a harmonic decomposition of the IVDF, one can extract ea...

Violent fluid motions, high speed marine vehicles and Computational Fluid Dynamics (CFD) are selected as main topics. Violent fluid motions deal with green water on deck, sloshing and slamming. Slamming involves many physical effects. When analyzing slamming, one must always have the structural reaction in mind. This necessitates that hydroelastic effects are considered. Many hydrodynamic pheno...