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What is the definition of lift force in the context of wind movement in a vertical axis? 

Parasitic drag
Zero-lift drag coefficient
Lift coefficient
Lift-induced drag
Gurney flap
Best insight from top research papers

In the context of wind movement in a vertical axis, the lift force refers to the aerodynamic force acting perpendicular to the direction of the wind flow, contributing to the rotation and power generation of vertical axis wind turbines (VAWTs) . This force is crucial for the performance of VAWTs, as it influences the efficiency of power generation by interacting with the blades of the turbine . Studies have shown that the lift force in VAWTs can be influenced by various factors such as the presence of high-lift devices like Gurney flaps, surface vorticities, rotational acceleration of the airfoil, and acceleration of the surface . Understanding and optimizing the lift force is essential for enhancing the overall performance and energy output of vertical axis wind turbines.

Answers from top 5 papers

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Papers (5)Insight
Open access
Analytical Aerodynamic Simulation Tools for Vertical Axis Wind Turbines
Paul Deglaire
01 Jan 2010
32 Citations
The paper does not address the specific definition of lift force in the context of wind movement in a vertical axis.
Open access•Journal Article•DOI
Influence of Reynolds Number and Scale on Performance Evaluation of Lift-type Vertical Axis Wind Turbine by Scale-model Wind Tunnel Tests
Tadakazu Tanino, Shinichiro Nakao, Takeshi Miyaguni, Kazunobu Takahashi 
30 Jun 2011-International Journal of Fluid Machinery and Systems
3 Citations
In the context of vertical axis wind turbines, lift force is the dominant driving force that changes from drag force at a specific Reynolds number, influencing turbine performance.
Journal Article•DOI
A note on the decomposition of aerodynamic forces induced by a wind turbine flaps
Y. Y. Niu, P. J. Shih, S. C. Kong 
01 Oct 2020-Journal of Mechanics
1 Citations
The lift force in a vertical-axis wind turbine is influenced by volume vorticity, rotational velocity, angular acceleration, and surface friction, as per the force element theory in the study.
Open access•Journal Article•DOI
Determination of the aerodynamic characteristics of a wind power plant with a vertical axis of rotation
Gulzar Ahmad Nayik, Philipp Robinson Rössner, Hal M. Friedman, Simon Potter, Alison Milbank, Hua Lei, Sarah Pischel, Christiane Stenzel, Ian Ruthven, Nancy Salay 
29 Apr 2023-Eastern-European Journal of Enterprise Technologies
In the context of wind movement in a vertical axis, lift force refers to the force generated by the rotating cylinders and fixed plate of a wind turbine, increasing traction force.
Open access•Journal Article•DOI
Analysis of Lift and Drag Forces at Different Azimuth Angle of Innovative Vertical Axis Wind Turbine
Abhijeet Malge, Prashant M. Pawar 
02 Sep 2015-International Journal of Energy and Power Engineering
2 Citations
Lift force in vertical axis wind turbines is generated by a pressure differential due to angle of attack, creating upward force on the blades for power generation.

Related Questions

How are lift and drag generated on sails?5 answersLift and drag on sails are generated through various mechanisms. The lift is primarily created by manipulating the vorticity field around the sail, leading to the production and stretching of vortex rings that contribute to the force generation. Additionally, the combination of two sails can produce a larger thrust force than the sum of each sail separately, with the distance between the sails playing a crucial role in increasing the lift force. Drag, on the other hand, is estimated using formulas like Filon's drag formula and is influenced by the sail's design and positioning to minimize drag and maximize lift. By understanding these aerodynamic principles and optimizing sail configurations, sailors and designers can enhance the efficiency and performance of yacht sails.
What is vertical axis wind turbine?5 answersA vertical axis wind turbine (VAWT) is a type of wind turbine where the main rotor shaft is positioned perpendicular to the wind direction. It consists of a vertical axis windmill, DC motor, 12V battery, DC inverter, and transformer. VAWTs do not require wind sensing and orientation mechanisms as they do not need to be pointed into the wind. They are designed to generate energy from the air's kinetic energy. VAWTs have various geometric forms, with blades placed in a stator that directs the wind stream. The stator and rotor blades have leading and trailing edges, and each blade is attached to an upper and lower plate of the stator or rotor. The use of VAWTs allows for energy generation and can help address the increasing demand for sustainable resources.
What lifting plaforms are most common in construction?5 answersLifting platforms commonly used in construction include those with protective devices to prevent toppling and protect workers from injury. Another type of lifting platform is equipped with lifting devices that can transport objects to workers on the operating platform, eliminating the need for workers to manually lift objects using wire ropes. There are also lifting platforms with fixed rods, hooks, and steel wire ropes for stability and safety during construction. Additionally, lifting platforms with protective fences, safety ropes, and motor-driven hanging baskets are used to conveniently transport tools and objects to different heights. Finally, lifting platforms with supporting legs, lead screws, and transmission parts are designed for adjustable height and easy access to building materials and tools.
What is vertical wind turbine?2 answersA vertical wind turbine is a type of wind turbine that has a vertical rotation shaft and vertical blades arranged around the shaft. These blades are attached to the rotation shaft through an arm and have a blade main part and blade-tip inclined parts. The blade-tip inclined parts have a smaller thickness than the blade main part. The purpose of a vertical wind turbine is to generate wind power. It is often used in wind generation systems and wind energy power turbines. The vertical axis design allows for improved generating efficiency and power. The turbine can rotate about a central axis and harness wind energy through the use of vanes.
Why is peal force important in vertical jump?3 answersVertical force production (VFP) is important in the vertical jump because it is a critical determinant of performance in activities such as sprinting, jumping, and changing direction in sports like soccer. Improving VFP can enhance power production, which correlates with sport performance. The vertical jump is used as a measurement of power and performance in various athletic pursuits, including volleyball, basketball, football, and weightlifting. It is also a fundamental motor ability that enables individuals to perform routine activities and sports movements involving running, sudden stops, and balance. Training programs, such as strength training, plyometrics, and periodization training, aim to improve explosive power and vertical jump performance. Therefore, understanding and developing strategies to enhance VFP in the vertical jump is important for athletes and coaches to improve athletic ability and performance.
What is force?5 answersForce is a concept that has been explored in various contexts. It can be understood as the cause of motion and the reason for bodies to keep moving. In the field of physics, force is seen as a fundamental aspect of nature and is related to the essence of things. Recent technical developments have allowed for precise force measurements on single molecules, providing insight into how stress affects molecular interactions. Force is also present in everyday life, such as when throwing a ball or pushing someone off a couch. Philosophers and literary thinkers have delved into the concept of force, attempting to define and understand its nature. Overall, force is a complex and multifaceted concept that plays a significant role in various disciplines and aspects of life.

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