In this study, the missile staging process by implementing a side-injected jet is simulated numerically. The problem is considered to be axisymmetric and the thin shear layer approximation of Navier-Stokes equations along with an algebraic turbulence model is used in a quasi-static form for the calculations. The free stream corresponds to a very high altitude flight condition with a Mach number...

An ultrasonic guided wave system for pipe inspection is proposed. Using guided wave experience to date on a variety of different tubing problems, feasibility experiments have already been conducted on piping under insulation in both a laboratory and chemical processing facility field environment. Several guided wave techniques are introduced, one using a broad banded variable angle beam transdu...

The well-known “displace, cut and reflect” method used to generate disks from given solutions of Einstein field equations is applied to the superposition of two extreme Reissner-Nordström black holes to construct disks made of charged dust and also non-axisymmetric planar distributions of charged dust on the z = 0 plane. They are symmetric with respect to two or one coordinate axes, depending w...

The analytical solution of functionally graded piezoelectric hollow cylinder which is under radial electric potential and non-axisymmetric thermo-mechanical loads, are presented in this paper. Using complex Fourier series and estimation of power law for variations of material characterizations through the thickness, the electro thermo mechanical behavior of the FGPM cylinder is obtained. The st...

In this article, a boundary element method (BEM) is used to predict the unsteady performance of ducted propellers in open water and ship behind condition. To improve accuracy potential flow solver with highly viscous problems, such as separation near blunt body, section profiles model duct have be modified from trailing edge sharp duct. The present modifies based on predicted streamlines by cou...

To calculate the stress-deformed state of road-tanker metal structures during liquid cargo transportation, solution for bending axially and symmetrically loaded circular plates is proposed, which based on theory elasticity approach. Dependencies calculating stresses displacements under arbitrary load law support type are substantiated. Deformation action axisymmetric loading leads to appearance...

the global environmental concerns have put the light weighting of structures on the fore front of the research in transportation industry. among other light weight alloys, the transportation industry is considering magnesium intensive light body-in-white structure in automotive applications. although the research in modeling technique areas is very active, a suitable practical model mimicking t...

Abstract Dynamic inflow effects occur due to the rapid change of rotor loading under conditions such as fast pitch steps. The paper presents a setup suitable for investigation those non-axisymmetric conditions, namely individual Furthermore, insights into relevant phenomena are gathered. An control capable model wind turbine is set up in tunnel order conduct measurement controllable conditions....