Studying the Dependence of the Aerodynamic Characteristics of Rotating Cylinders on the Rake Angle of Air Flow

Tanasheva, N. K.; Shuyushbayeva, N. N.; Mussenova, Elmira

doi:10.1134/s1063785018090134

Cited by 9 publications

(9 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Where F is the aerodynamic force in kg, V k is the wind speed in m/s, S is the windage area in m 2 , C is the coefficient of aerodynamic force [7].…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Study of aerodynamic parameters of the sail blade

Tleubergenova¹,

Tanasheva²,

Shaimerdenova³

et al. 2022

View full text Add to dashboard Cite

This article studies the aerodynamic characteristics of a triangular sail blade of various parameters. For this purpose, we made a triangular sail blade with a dynamically changing surface shape. The airflow velocity varied from 3 to 12 m/s. The dependences of the aerodynamic forces of the sail blade on the flow velocity were investigated at various angles of the apex of the triangular blade. The experiments were carried out at different vertices of the angles: 00 ; 300 ; 600 ; 900 . As a result of the experiment, it was revealed that at the vertex angle γ = 900 , the triangular sail blade has optimal aerodynamic parameters. The dependences of the aerodynamic coefficients on the dimensionless angle of attack are obtained. It is found that the optimal number of triangular blades for a wind power plant with sailing blades is 6. It is established that at the angle of attack α = 00 , the maximum value of the middle section of the wind wheel to the streamlined airflow will introduce a decrease in the value of the drag coefficient with an increase in attack α. The analysis of the experiment results on the change in α from the speed of the airflow of the sail blade is carried out. When the blade position changes, drag changes relatively to the airflow. The wind wheel will change its position relative to the stream with an increase in the attack angle. With an angular position change, the area of the middle section of the wind wheel begins to decrease relative to the incoming flow. With a decrease in the middle section of the wind wheel, the drag force decreases, and the drag coefficient decreases accordingly. Thus, the total result of pressure changes on the leeward and windward surfaces of the sail can be represented as one resultant aerodynamic force directed at an angle to the line perpendicular to the wind direction.

show abstract

“…Where F is the aerodynamic force in kg, V k is the wind speed in m/s, S is the windage area in m 2 , C is the coefficient of aerodynamic force [7].…”

Section: Methodsmentioning

confidence: 99%

“…The thrust force, which is part of the aerodynamic forces, contributes to the rotational movement of the wind power plant. The change in the value of the aerodynamic force is influenced by a change in the pressures, namely, a change in dynamic and static pressure when the blades are blown by the wind [7].…”

Section: Introductionmentioning

confidence: 99%

Study of aerodynamic parameters of the sail blade

Tleubergenova¹,

Tanasheva²,

Shaimerdenova³

et al. 2022

View full text Add to dashboard Cite

show abstract

“…2). Focusing on the highly effective results of the well-known works of such several authors as N.K.Tanasheva and Dyusembaeva [19,[21][22], an optimal cylindrical blade with a diameter of 50 mm and a length of 300 mm was created. The width of the fixed blade was 33 mm, and the length was 300 mm.…”

Section: Geometry Featuresmentioning

confidence: 99%

Optimal choice of the geometric shape rotor blade wind turbine using the numerical method

Dyusembaeva,

Tanasheva,

Tleubergenova

et al. 2024

View full text Add to dashboard Cite

To increase the energy efficiency of wind turbines, it is necessary to optimize and improve the shape and size of power elements. In this work, in order to improve the output energy indicators, as well as increase the lifting force, a combined blade in the form of a rotating cylinder and a fixed blade was created and numerically studied. The novelty of the work lies in obtaining the results of the influence of a fixed angle of inclination of the blade on the overall aerodynamic characteristics of the entire combined blade at wind speeds from 3 to 12 m/s. Based on three-dimensional modeling, 4 variants of the combined blade with different angles of location are designed. Three-dimensional patterns of the distribution of velocity vectors and pressure fields are obtained. Linear graphs of the dependence of aerodynamic coefficients on the Reynolds number are shown. It was found that at an angle of 0 degrees, the combined blade has a maximum lift coefficient of 10 and a minimum drag coefficient of 4.5 at Reynolds 1·104. The numerical results obtained will be useful in the development of wind power plants with combined blades operating on the basis of Magnus.

show abstract

“…Such a strategy is not acceptable. This would lead to excessive deformation of the engine and starter motor, possibly resulting in their shorter service life (Tanasheva et al, 2018). The pulse ratio could be aligned with some on and off strategy, but this would be at the expense of increased fuel consumption.…”

Section: Literature Reviewmentioning

confidence: 99%

Reduction of Defective Conditions of the Wind Power Plant Operation at Reserving the Operation Modes of Alternative Energy

Shuyushbayeva¹,

Sagimbaeva²,

Mussenova³

et al. 2020

PTQ

View full text Add to dashboard Cite

The current pace of the global economy requires a significant increase in energy production. At the same time, the reserves of traditional natural fuels, such as natural gas and oil, are gradually being depleted. Therefore, conventional energy is being replaced by an alternative. Developing the operation technology of the devices that ensure the functioning of alternative energy enterprises is based on the fact that the reliability of such devices should be at the level of traditional power plants. Each device must be not only fault-tolerant but also easy to maintain. It is often considered to be portable and self-contained devices capable of generating energy without excessive maintenance of the equipment by the technical service. The article aimed to solve the problem of using wind energy in a remote area. The leading research method was graph theory analysis. The novelty of the research is determined by the fact that it offers the formation of a model that will meet the standards of functioning at the level of the most significant industrial models used in alternative energy as one of the objects of pure energy production. A wind power generation plant is used as a similar facility. It was revealed that this issue should be considered only provided that such a facility will produce energy in an amount of not less than a similar sample of a traditional energy source in consumption by both industrial and standard consumers. The practical significance of the study is determined by the fact that each of the designed types of facilities can operate in almost any conditions and have high fault tolerance.

show abstract

Studying the Dependence of the Aerodynamic Characteristics of Rotating Cylinders on the Rake Angle of Air Flow

Cited by 9 publications

References 2 publications

Study of aerodynamic parameters of the sail blade

Study of aerodynamic parameters of the sail blade

Optimal choice of the geometric shape rotor blade wind turbine using the numerical method

Reduction of Defective Conditions of the Wind Power Plant Operation at Reserving the Operation Modes of Alternative Energy

Contact Info

Product

Resources

About