Prototyping and Study of Mesh Turbomachinery Based on the Euler Turbine

Abstract

This paper presents a scientific development aimed at improving the efficiency of turbomachines through the joint use of rotary-vane and vortex workflows. In the well-known Euler turbine, the rotor flow channels represent a set of curved pipes. The authors propose to consider in more detail the possibilities of using such rotating pipes in the implementation of an ejection (vortex) workflow. A hybrid pump was considered with the conclusion that its workflow can be described using two Euler equations. The results of computer simulation indicate that hybrid turbomachines are promising. The use of additive technology allowed the creation of micromodels of the Euler turbine with various rotor designs. Laboratory hydraulic tests showed that the liquid inlet to the rotor is possible in pulse mode. Laboratory tests of micromodels using compressed air showed that gas (or liquid) motion through curved pipes could be carried out from the rotor periphery to its center and then back, albeit through another curved pipe. The research results demonstrated that the scientific and technical potential of the Euler turbine is not yet fully unlocked, and research in this direction should continue. The study results are applicable in various industries including the energyeconomy, robotics, aviation, and water transport industries.

Development and Prototyping of Jet Systems for Advanced Turbomachinery with Mesh Rotor

“…This result complies with the result of the physical experiment described earlier in our publications [1,23]. A previous paper [24] also noted that mesh turbines could be developed based on the Euler turbine. In this case, the curved tube is used as a mixing chamber for the ejector.…”

“…The computer simulation results (Figures 27 to 29) showed the possibility of the velocity vector deflection (at the nozzle outlet) at an angle ranging from +90 o to -90 o within the geometric hemisphere, and the velocity vector was controlled using a flat diaphragm. Earlier, similar results of the physical experiment [1,23,24] performed under laboratory conditions using a gaseous and a liquid model medium were obtained and published. Summarizing the results of the performed numerical experiments and the results of previously performed physical experiments, we can make an intermediate conclusion about the scientific novelty of the research as a whole: in the course of physical and numerical experiments, for the first time, the extreme conditions for the outflow of liquid and gas through a nozzle equipped with a velocity vector control system were considered, in the control range for the velocity vector deviation angle from +180 o to -180 o within the geometric sphere.…”

“…It is important to confirm the possibility of jet diaphragm deflection by 90 degrees using computer simulations. In the course of a physical experiment, it was previously proved that the jet could undergo diaphragm deflection by 90 degrees [1,23,24]. This paper presents new research results and describes numerical experiments, confirming the possibility of jet deflection by 90 degrees.…”

“…Also, the pneumatic and hydraulic tests' results confirmed the mesh turbine's suitability for its operation in conditions of changing the working medium density in a wide range from 1 to 1.000 kg per cubic meter. These results of pneumatic and hydraulic tests were described in [1,23,24]. In a further study of gas-dynamic processes in channels with a mesh structure, it will be necessary to consider choked flow conditions.…”

Designing Mesh Turbomachinery with the Development of Euler’s Ideas and Investigating Flow Distribution Characteristics

“…In modern conditions, the reduction of energy costs for implementing production processes is the most urgent problem. To solve this problem, a series of research works is being conducted in the laboratories of Gubkin University to create novel and promising turbomachinery [3][4][5]. In these promising machines, the flow channels have a mesh structure.…”