In most previous investigations, journal bearing performance characteristics have been analyzed using different simplified assumptions. The purpose of this study is to eliminate most of those assumptions, using computational ...

In this paper, the time-optimal control for point-to-point motion of robotic manipulators, with fixed initial and final states, bounded control inputs and jerk constraint for entire path is presented. First, the jerk ...

The present study is concerned with measuring and simulating soot and flame structure of a non-premixed gas fired swirl stabilized combustor incorporating a two-step soot model. Soot mass fractions have been measured by ...

Mixture ratio (oxidant/ fuel) in combustion chamber has influence on combustion and thermodynamic properties as thrust and impulse; therefore, calculation of this parameter in the injector plate of liquid propellant rockets ...

Near field circular jet is studied experimentally at discharge Reynolds number range of 21000 to 100000. The effect of Reynolds number on the initial boundary layer mean velocity profile is negligible, but is significant ...

In this paper, internal ballistics of solid rocket motors (SRM), in which the grain is burned from inside (inner burning surface) or from both inside and outside (inner and outer burning surfaces), is numerically simulated. ...

Three-dimesional thermoelasticity solutions are presented for the dynamic analysis of an axisymmetric cross-ply laminated shallow panel subjected to thermal load. The panel is simply supported at four sides and has a finite ...

The 2D hypersonic real gas flow has been analyzed on an adaptive unstructured grid using Roe's Flux Difference Splitting and AUSM schemes. In high temperature and hypersonic regime, the flow is extremely compressible and ...

In this article, a full temporal and spatial description of discharge for pure nitrogen gas in a nearly uniform electric field is reported.  Results of simulation given provide a full understanding of the discharge at ...

Fuzzy systems are used for modelling of explosive cutting process of plates by shaped charges. The aim of such modelling is to show how the depth of penetration varies with the variation of important parameters. It is also ...

Free vibration of orthotropic and cross–ply laminated hemispherical shells using elasticity approach is studied. The Navier type equations are transformed into partial differential equations with constant coefficients in ...

In this paper, Euler equations are solved to simulate compressible flow on unstructured moving grids. Solution domain is discretized using control-volume finite-element method.  This method is benefited from the power of ...

The use of adaptive feed-forward controllers has proven to be a very successful strategy for controlling noise and vibration in a variety of applications. One reason is that the feed-forward controller is an open loop ...

This paper investigates the implementation of interlacing and irregular rectangular meshes used in conjunction with the DXDR method and a modified dynamic relaxation method, to study the large deflection elastic plates. ...