| Autor: |
Aleksey G. Terentyev, Ivan I. Maksimov, Nikolay A. Fedorov |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
The Challenge of Sustainability in Agricultural Systems ISBN: 9783030721091 |
| Popis: |
It is possible to use hydro turbines with a sufficiently high coefficient of water energy use and low costs compared to other hydro turbines to supply power to agricultural facilities remote from the source of electricity and located along rivers with low flow rates. The authors propose to apply in agriculture a hydro turbine with flexible blades that convert the stream energy. The study aims to develop a methodology for calculating the parameters of such a hydro turbine. It is shown that it is possible to perform numerical calculations of the flow around such a hydro turbine and find the power characteristics in real flows. Concerning the annular section of a flexible blade, the problem of flow around a flexible arc with an ideal flow for finding the shape of the arc is considered. The problem is solved numerically, with the additional fulfillment of the Laplace condition along the arc. The shape of the arc is found during the iteration process. In relation to a hydro turbine, the problem of the numerical solution of the flow around a grid of flexible arcs is considered. The problem uses the green integral equation for a grid of rigid profiles of arbitrary shape. The power characteristics of a hydro turbine are found, taking into account the viscosity of a real medium. The results of field experiments are presented, and numerical calculations and field experiments are compared. The developed methodology for calculating hydro turbines with flexible blades is consistent with the experimental results and allows developing such hydro turbines for given parameters. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
