An important element of the flow path industrial compressors is return channel (RCh). Their preliminary design based on “classic” recommendations last century. The current state CFD (Computational Fluid Dynamics) makes it possible to effectively use this technology for research and optimization RCh, including development a methodology their design. objects - centrifugal compressor stages interm...

In this article torque assisted anti-surge control (TASC), a compressor anti-surge control system based on model predictive control (MPC) is presented. TASC is implemented on an embedded system for the control of compressor stations with electrical variable-speed drives (VSD) which are used in applications such as natural gas transportation via pipelines. The manipulated variables of the propos...

A Parallel multiplier using approximate compressors are proposed in this paper. The two new approximate 4-2 compressors are proposes that the simplified compressors have better power consumption than the optimized 4-2 compressor existing designs. These approximate compressors are then used in the restoration module of a Parallel multiplier. Four different schemes for utilizing the proposed appr...

The paper is aimed to create the mathematical model of centrifugal compressor based on group method data handling-type neural networks determine volumetric flow rate as dependence compressor’s technological parameters (the rotor’s angular velocity, inlet and outlet temperatures, pressures, atmospheric pressure). It important scientific task, because most compressors used in process industry don...

Centrifugal compressors are widely used in many industrial applications because of their advantages. However, these turbomachines suffer at a low-flow rate from instabilities, such as rotating stall and surge. That leads to operational failure, pressure fluctuations vibrations the thorough system. Many mechanical solutions minimize instabilities expand operating range towards rates like active ...

At present, two-stage centrifugal compressors based on air bearing and high-speed motor technology are widely used in automotive hydrogen fuel cells. The low-pressure stage high-pressure of the compressor directly connected through an interstage pipeline, thus structure pipeline has important influence aerodynamic performance compressor. In this work, a with three different pipelines were inves...

Based on phase space reconstruction and fractal dynamics in nonlinear dynamics, a method is proposed to extract and analyze the dynamics of the rotating stall in the impeller of centrifugal compressor, and some numerical examples are given to verify the results as well. First, the rotating stall of an existing low speed centrifugal compressor (LSCC) is numerically simulated, and the time series...