2-d and axisymmetric navier-stokes equations are solved using reiman-roe solver with different limiters for second-order accurate schemes. the results were obtained for supersonic viscous flows over semi-infinite axisymmetric and 2-d bodies. the free stream mach numbers were 7.78 and 16.34. the stability of roe method with different limiters and entropy conditions were considered. the results s...

The concept of issuance revolution is synonymous with the expansion of revolution that it was considered by Imam at at beginning of the revolution. Before the revolution western countries's effort and program involved in the dried roots of Islam in different countries and reduced the concepts and doctorins of it. Because of this the most important influence of Islamic revolution was. Series of ...

The concept of issuance of revolution is synonymous with the expansion of revolution that Imam considered it at beginning of the revolution. Before the revolution, western countries’ effort and program involved in the dried roots of Islam in different countries and reduced the concepts and doctorins of it. For this reason, this was the most important influence of Islamic revolution was. Series ...

In this work, a simple semi-empirical model is proposed, based on Response Surface Model, RSM, to determine the shape of an attached oblique shock wave emanating from a pointed axisymmetric nose at zero angle of attack. Extensive supersonic visualization images have been compiled from various nose shapes at different Mach numbers, along with some others performed by the author for the present p...

The gravity-driven migration of N ≥ 1 bubble(s) near a free surface is addressed within the assumption of negligible inertial effects by solving a boundary-integral equation at each time and assuming axisymmetric free surface and bubble(s) with axis of revolution aligned with the gravity. The implemented boundary element method permits one to accurately invert at a reasonable cpu time cost the ...

An explicit global and unique isometric embedding into hyperbolic 3-space, H, of an axisymmetric 2-surface with Gaussian curvature bounded below is given. In particular, this allows the embedding into H of surfaces of revolution having negative, but finite, Gaussian curvature at smooth fixed points of the U(1) isometry. As an example, we exhibit the global embedding of the Kerr-Newman event hor...

Motivated by recent observations of plateaus and minima in the radial abundance distributions of heavy elements in the Milky Way and some other spiral galaxies, we propose a dynamical mechanism for the formation of such features around corotation. Our numerical simulations show that the non-axisymmetric gravitational field of spiral density waves generates cyclone and anticylone gas flows in th...

Axisymmetric induction clamping of high-speed machine tools is proposed and modeled. The model consists of three nonlinear partial differential equations (PDEs) describing the distribution of magnetic field, temperature field and field of thermoelastic displacements in the domain. The system is solved numerically in the monolithic formulation using own code Agros2D based on a fully adaptive hig...

Abstract In this article, axisymmetric deformations of coupled functionally graded conical shells are studied. The analytical solution is presented by using the complex hypergeometric and Legendre polynomial series. results agree closely with reference for isotropic revolution. symbolic package Mathematica commands added to article help readers search particular solutions. detailed solutions tw...