Effect of a rough surface on the aerodynamic characteristics of a two-bladed wind-powered engine with cylindrical blades

Tanasheva, N. K.; Kunakbaev, T. O.; Dyusembaeva, A. N.; Shuyushbayeva, N. N.; Damekova, S.K.

doi:10.1134/s1063784217110299

Cited by 8 publications

(6 citation statements)

References 1 publication

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“…In this work, the authors used the k-ε turbulence model with two equations, which provides a general description of turbulence with two transport equations for the turbulent kinetic energy k and the turbulent energy dissipation rate ε [18,19]. Essentially, the magnitude and direction of the aerodynamic forces on the sail depend on its position relative to the airflow, which is characterised by the attack angle [20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling of the aerodynamic coefficients of a sail blade

et al. 2023

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The authors of the work numerically studied the aerodynamic coefficients of the sail blade, during which the patterns of three-dimensional flow around airflow and the pressure distribution field were obtained. The triangular sail blade is used as the power element of wind turbines. The sail blade modeling was based on the Reynolds-averaged Navier–Stokes equations (RANS) using the ANSYS FLUENT computer program. A flow pattern is obtained, which gives a physical explanation of the nature of the airflow around the sail blade and the pressure distribution field. Comparative analyses of theory and experiment are given. In the range of Reynolds numbers from 0.5 × 104 to 2.5 × 104, the change in the drag force coefficient is from 1.04 to 0.54, and the difference in the lift force coefficient is from 0.52 to 0.33.

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Section: Introductionmentioning

confidence: 99%

Mathematical modeling of the aerodynamic coefficients of a sail blade

et al. 2023

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“…Essentially, the magnitude and direction of the aerodynamic forces on the sail depend on its position relative to the airflow, which is characterised by the attack angle [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of the Aerodynamic Coefficients of a Sail Blade

Tleubergenova

Tanasheva

Shaimerdenova

et al. 2022

Preprint

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For more than a hundred years, wind turbines have been used to convert the potential of wind energy into electricity. In recent years, a trend has emerged in the form of a sharp increase in fossil fuel prices, as a result of which the development and production of wind turbines has greatly increased. The market for wind turbines is broad; however, in general, many of them are designed for relatively high wind speeds, typically from 10 to 15 m/s at low power. Central Asia is known for lower wind speeds, so the commercial wind turbines do not meet the energy demand. Against this background, the current topic is the development and research of wind turbines and their functional elements for low wind speeds, among whose representatives is the sail. The authors of the paper numerically studied the aerodynamic coefficients of the sail blade, determining the patterns of three-dimensional air flow around it and the pressure distribution field. The sail blade was modeled using the computer program ANSYS FLUENT based on the Reynolds-averaged (RANS) Navier-Stokes equations. The inflow velocity varied from 3 to 15 m/s. Comparative analyzes of the theoretical and experimental results are given. The patterns of changes in aerodynamic parameters determined by the authors could contribute to the understanding of the complex aerodynamic patterns of a turbulent flow around the blades.

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“…The peculiarities of the cylinder cross-flow have been studied in some detail in the work of J.S. Akylbayev [3]. The aerodynamic characteristics of the cylinders revolving around their main axis are much less studied [4].…”

Section: Introductionmentioning

confidence: 99%

Research lift coefficient on the distance between the revolving cylinders a turbulent stream

Tanasheva,

Dyusembaeva,

Shuyushbayeva

2020

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In this paper the possibilities of using a system of revolved cylinders as part of a wind turbine are considered. The aerodynamic forces in the cross-flow of a cylinder and a system of two cylinders have been measured. A method for determining the optimal distance between the cylinders in their cross-flow has been developed. We experimentally determined the conditions under which the Magnus effect contributes to the largest increase of a lift force and, correspondingly, to the increase of the wind turbine efficiency. This can be used to create multi-bladed wind turbines of a new generation based on the Magnus effect. The aerodynamic characteristics of the cylinders with diameters 10 cm in diameter, that is the rotary motion, is determined by the maximum value with the coefficient of lifting force and the frontal impedance coefficient. These results are useful for us in practice, as these results can be used in smaller wind speed engines. In the local economy, the use of local wind power is a convenient, affordable, and environmentally friendly, with a minimal wind speed engine focused on reducing the deficit of electricity, which is one of the key issues in rural areas.

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Effect of a rough surface on the aerodynamic characteristics of a two-bladed wind-powered engine with cylindrical blades

Cited by 8 publications

References 1 publication

Mathematical modeling of the aerodynamic coefficients of a sail blade

Mathematical modeling of the aerodynamic coefficients of a sail blade

Mathematical Modeling of the Aerodynamic Coefficients of a Sail Blade

Research lift coefficient on the distance between the revolving cylinders a turbulent stream

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