The article is devoted to studying the contra-rotating stages with different impellers and blade discs. Determining reduction of volumetric losses by modeling in software package ANSYS CFX. work aimed create study flow characteristics: semi-open, closed impellers, As a result work, following were determined compared: semi-opened impeller disc; disc. research, fluid flows their characteristics f...

Abstract The radial growth of compressor discs is strongly influenced by conjugate heat transfer between conduction in the co-rotating and buoyancy-driven convection rotating fluid core discs. An accurate prediction metal temperatures these an important issue thermo-mechanical design, where blade-tip clearances must be controlled carefully to ensure safety efficiency under all operating conditi...

We investigate whether or not the low ionisation fractions in molecular cloud cores can solve the ‘magnetic braking catastrophe’, where magnetic fields prevent the formation of circumstellar discs around young stars. We perform three-dimensional smoothed particle non-ideal magnetohydrodynamics (MHD) simulations of the gravitational collapse of one solar mass molecular cloud cores, incorporating...

For the first time, all available pseudo-Schwarzschild potentials are exhaustively used to investigate the possibility of shock formation in hydrodynamic, invicid, black hole accretion discs. It is shown that a significant region of parameter space spanned by important accretion parameters allows shock formation for flow in all potentials used in this work. This leads to the conclusion that the...

In the era of precision cosmology and ever-improving cosmological simulations, a better understanding different galaxy components such as bulges discs will give us new insight into galactic formation evolution. Based on fact that stellar populations constituent galaxies differ by their dynamical properties, we develop two simple models for decomposition using IllustrisTNG hydrodynamical simulat...

This article focused on the stress analysis of an edge crack in a thin hallow rotating functionally graded material (FGM) disk. The disk is assumed to be isotropic with exponentially varying elastic modulus in the radial direction. A comprehensive study is carried out for various combinations of the crack length and orientation with the different gradation of materials. The effect of non-unifor...

ABSTRACT We study low-metallicity star formation with a set of high-resolution hydrodynamics simulations for various gas metallicities over wide range 0–$10^{-3} \ {\rm Z_{\bigodot }}$. Our follow non-equilibrium chemistry and radiative cooling by adopting realistic elemental abundance dust size distribution. examine the condition fragmentation collapsing clouds (cloud fragmentation; CF) accret...