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Contributions to research of the working body of micro hydropower plants


Author: Ciobanu Oleg
Degree:doctor of engineering
Speciality: 05.02.02 - Theory of machines and machine elements
Year:2015
Scientific adviser: Viorel Bostan
doctor habilitat, professor, Technical University of Moldova
Institution: Technical University of Moldova

Status

The thesis was presented on the 22 January, 2015
Approved by NCAA on the 24 February, 2015

Abstract

Adobe PDF document – 2.09 Mb / in romanian

Keywords

flow micro hydropower plant, kinetic energy of flowing water, hydrodynamic blade, hydrodynamic rotor, hydrodynamic force, hydrostatic pressure, ANSYS CFX, boundary layer, turbulent flow, CFD numerical simulation, mathematical model

Summary

The thesis comprises an introduction, four chapters, conclusions and recommendations, references with 178 titles and 7 annexes. The volume is 146 pages, including 116 figures and 12 tables. The main content of the thesis has been published in 29 scientific papers, including 6 single author papers, 6 papers in peer-reviewed journals and 11 patents.

The field of studyrefers to the conversion of kinetic energy of flowing water of rivers into electricity or mechanical, in particular, the use of micro hydropower plants with hydrodynamic blades not requiring the construction of the dam.

The purpose of this paper is the elaboration of the rotor of flow micro hydropower plant with increased efficiency of conversion of kinetic energy of flowing water and functional capacity by developing a mechanism to guide the blade with hydrodynamic profile in the direction of water flow.

Scientific novelty and value of the work. It was developed the mathematical model of the hydrodynamic rotor, CFD numerical simulation of blade profile, blade manufacturing technology. Based on the research results a new concept of hydrodynamic rotor was developed.

Theoretical significance consists in the development of research methodology for elaboration of research methods based on mathematical models for describing the turbulent fluid flow near hydrodynamic blade and CFD simulation of hydrodynamic effects of the hydrodynamic rotor of flow micro hydropower plant.

Scientific research methodology of this paper is the development of the concept of the hydrodynamic rotor and the mathematical model.

Implementation of research results. The experimental models of hydrodynamic rotor have been designed and manufactured and an orientation mechanism of the blades in the direction of water flow. At the same time the manufacturing technology of the hydrodynamic rotor blades was achieved, which will allow production of flow micro hydropower plant in series with a high coefficient of utilization of the kinetic energy of flowing water.