Numerical simulation of transonic turbulent flow through impeller of axial compressor…
Journal Title: Технічна механіка, Техническая механика, Technical Mechanics - Year 2014, Vol 3, Issue 3
Abstract
The work discusses the numerical simulation of a transonic turbulent flow through impeller of the Rotor 67 axial compressor with the application of the OpenFOAM open programming code. The selection of the turbulence model for the numerical simulation of transonic flows is considered. The Spalart–Allmaras turbulence models, a standard k – ε model and SST Menter turbulence models are comparatively tested solving the problem of the simulation of the flow through transonic diffusor. According to the results, preference is given to the Spalart–Allmaras turbulence model. Numerical simulation of the flow through plane diffuser profile in cascade is done. The multiple-block computational grid of the O-type is used. The resulting dependences of the aerodynamic char-acteristics on the flow velocity through cascade inlet are in satisfactory agreement with the experimental data. It is shown that the accuracy of the approximation of the profile front and rear edges does not affect the accuracy of calculations of the cascade aerodynamic characteristics. The three-dimensional transonic turbulent flow through Rotor 67 impeller is numerically simulated. The geometric model is realized without a gap between the blades and the surface of the periphery. A multiple-block computational grid of the H-type is employed for the approximation of the computational region. The derived dependence of the degree of a total pressure increase on the gas mass flow through impeller is consistent with the experimental data and calculations of other authors. The results confirm the applicability of the OpenFOAM open code for solving problems related to the numerical simulation of the flow through blade wheels of axial compressors.
Authors and Affiliations
S. Melashich, Yu. Kvasha
Keywords
Related Articles
- EP ID EP359060
- DOI -
- Views 71
- Downloads 0
Analysis of capabilities of national information market for remote sensing at high resolution as to 2015
The study aim is to analyze the capability of the Ukrainian information market for remote earth sensing at high resolution, and to assess this volume in money terms. Comparison with the similar evaluations conducted by t...
Sound suppressors For small arms with elastic deformable structural members
The paper deals with information about firearms sound suppressors using elastic deformable members, sig-nificantly springs. The results of analysis of their designs are presented and three groups of sound suppressors are...
Jacobi probability distribution for approximation of emperic statistic distributions
The paper purpose is to demonstrate the opportunities of the Jacobi probability distributions for fitting the statistical populations. The universal Pearson and Johnson systems of the distributions, the generalized lambd...
Estimated stability of magnetically levitated motion of transportation superconducting-magnet system vehicle along a plane track structure
A magnetically levitated motion of the vehicle of an electrodynamic system with a plane track structure can be realized in the systems with two or four lines of the track contours as illustrated by studies. Based on the...
. On the aerodynamic optimization of impellers of supersonic compressor stages.
The study deals with the pressing problem of diminution in the computer time for an aerodynamic optimization of blade rims of axial compressors when a numerical simulation of the flow based on the full averaged Navier-St...