The onset of rotating stall and surge in compressors limits the operating range aero-engines. Accurately predicting key features during these events is critical engine design process. In this paper, a three-dimensional computational model for transient simulation multi-stage axial proposed. kinetic equations describing dynamic process compression system are constructed, with 3D through-flow par...

This article explores the simulation of stall phenomena in axial compressor blade rows. The approach is based on the numerical solution of the compressible, two-dimensional Navier-Stokes equations. The results of both unforced and forced low-speed rotor stall are presented. In unforced cases, substantial ow separation is observed before the maximum pressure rise operating point is reached. Thes...

The results obtained with a lightweight dynamic axial fixator in the treatment of fractures are reported. The apparatus comprises a single bar with articulating ends which clamp self-tapping screws and can be locked at an angle appropriate for axial alignment. A telescopic facility allows ready conversion from rigid to dynamic fixation once periosteal callus formation has commenced. Reduction a...

An overview of the successful application modern composite materials for manufacturing turbine blades aircraft gas engines, axial mine and blast furnace compressors. Their main advantages these in comparison with metal are analyzed. Analytical calculations stresses arising material plastic starting turboexpanders carried out. The possibility glass-filled polyamide moving guide their operation a...

Abstract The stability limit of a tip-stalling axial compressor is sensitive to the magnitude near-casing blockage. In transonic compressors, presence passage shock could be major cause for Identification and elimination this blockage key improving compressor. article, using numerical simulation, within rotor, NASA Rotor 37, quantified parameter. For smooth casing, at conditions near stall maxi...

A novel parametric control method for the compressor blade, full-blade surface method, is proposed in this paper. Compared with traditional has good smoothness and construction convenience while maintaining low-dimensional characteristics, compared semi-blade a larger degree of geometric deformation freedom can account changes both suction pressure surface. only four more parameters each so it ...

An unsteady two-dimensional finite-volume solver was developed based on Van Leer’s flux splitting algorithm in conjunction with “Monotonic Upstream Scheme for Conservation Laws (MUSCL)” limiters and the two-layer Baldwin-Lomax turbulence model was also implemented. To validate the solver, two test cases were prepared and the computed results had good agreements with reference data. The rotating...