The global energy sector is experiencing a transition to efficiency, security, and low-carbon with focus on renewable sources reduction in conventional capacities. In Ukraine, the key task by 2035 develop hydraulic machines for pumped storage power plants (PSPP) heads of up 500 m, particularly Zakarpattia PSPP capacity 230 MW pumping mode. current approach designing flow parts based numerical studies that analyze impact geometric operating parameters efficiency. CAD makes it possible design...

Abstract Development of an industrial equipment prototype based on a multi-axial robotic arm KUKA KR3 R540 for composite 3D printing with continuous fiber is presented. Composite Filament Co-extrusion Anisoprint technology taken as basis the equipment. The following advantages manufacturing are presented in paper: ability to produce parts complex spatial shapes reinforcement; mold fabrication single process part manufacturing. Complex structures demonstrated.

A special program module was added to OpenFoam more than 10 years ago, and a large number of studies have been devoted its use for solving turbine engineering problems. Modeling inaccuracies can occur when the velocity is increased supersonic flow. The aim this work validate open library hydraulic turbines high-pressure centrifugal compressor flow calculation finding parameters model that are optimal in terms efficiency total/total pressure ratio. For numerical calculation, we used Reynolds...

In this article the method of structural and topology optimization for 3D printed composite parts reinforced with continuous fibers is presented. Within part shape changed simultaneously material orientation in order to minimize mass a under its strength constraints. The presented demonstrated on example cantilever plate. Quadratic stress criteria used as constraint. Algorithm implemented python code interacted Ansys software. obtained optimized design shown. Finite element analysis plate performed.

High-pressure compressors are among the most common pneumatic machines in industry and transport. Classical methods of designing such based on flow modeling two-dimensional one-dimensional settings. The specified design lead to creation sufficiently perfect constructions, but their characteristics can still be improved. To simulate a high-pressure compressor, it becomes relevant study possibilities optimizing using Ansys Vista CAD system, which significantly increase efficiency compressor....

Abstract Current study is dedicated to the evaluation of topology optimization method for design load-bearing aerospace structures. The subject research was composite spacecraft attach fitting (adapter) which provides interface between a and commercial launcher. Modelling stress-strain state lattice payload adapter under operation conditions performed. Compression strengths structural ribs were defined together with stiffness buckling stability taken as constrains. By means procedure optimal...

The difficulty of extracting oil from great depths due to the huge amounts sand, water and other impurities has led fact that well jet pumps are becoming more common. Their use in production is facilitated by such factors as practical insensitivity content gas dissolved compared types pumps; simplicity design absence moving parts, which inherent all technology. reliability durability an order magnitude higher than those any used production. Obtaining excellent characteristics a pump requires...

As of today, additive technologies are making it possible to create products being close the optimal shape. Topological optimization is widely used design such products. The paper considers two common approaches solving this problem: SIMP and BESO methods. Essence topological problem, its formulation in a general form typical examples demonstrate problem described. Theoretical foundations implementation features presenting each method; algorithms sensitivity initial settings analyzed....

The development of three-dimensional modeling and analysis the flow based on solution Reynolds-averaged Navier–Stokes equations allows to better determine characteristics parameters, but requires significantly more time spent simulation proof or verification mathematical models in order obtain minimal calculation errors. aim work is gas patterns a high-pressure centrifugal compressor numerical methods for calculating compare integral with experimental data. adequacy model displacement mass...

The design of compressors based on one- and two-dimensional flow calculations has reached the limit development by achieving maximum efficiency devices. Further is possible conducting expensive experiments or analyzing results modern mathematical models three-dimensional Reynolds-averaged Navier-Stokes equations. To improve characteristics centrifugal compressor part with subsequent change in shape location impeller blades, threedimensional were performed. Calculations made using Ansys CFX...

Grid composite structures are widely used in rocket and space technology as the payload adapters hull load-bearing (HLBS) of a spacecraft. An important parameter for these structures, along with strength characteristics, is minimum natural oscillation frequency. The article considers layout Express-1000 satellite platform consisting grid adapter spacecraft HLBS separable junction between them. paper studies influence number pyro-locks thickness frames on modes assembly. Calculation was...