Conformal mapping and efficient boundary element method without boundary elements for fast vortex particle simulations

Deglaire, Paul; Ågren, Olov; Bernhoff, Hans; Leijon, Mats

doi:10.1016/j.euromechflu.2007.03.005

Cited by 10 publications

(5 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In both figures red points represent clockwise vortex particles and blue points counter-clockwise particles emitted from the blades. These simulations have been achieved using a two-dimensional model with innovative algorithms [18] and a new approach toward geometry using conformal mapping of multiply connected domains [19] resulting in a significant decrease in computation time.…”

Section: B Variable Speed Operation With Fixed Pitch Vertical Axis Tmentioning

confidence: 99%

Matching a Permanent Magnet Synchronous Generator to a Fixed Pitch Vertical Axis Turbine for Marine Current Energy Conversion

Yuen

Thomas

Grabbe

et al. 2009

IEEE J. Oceanic Eng.

Self Cite

View full text Add to dashboard Cite

This is an author-produced version of a paper published in IEEE Journal of Oceanic Engineering. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination.Citation for the published paper: Yuen K., Thomas K., Grabbe M., Deglaire P., Bouquerel M., Österberg D., Leijon M. "Matching a permanent magnet synchronous generator to a fixed pitch vertical axis turbine for marine current energy conversion" IEEE Journal of Oceanic Engineering, 2009, 34(1) Access to the published version may require subscription. I. INTRODUCTIONF REE flow marine currents, i.e. unregulated water courses, tides and other ocean currents, are an energy resource yet to be utilized on a commercial scale. Without dams, this nonfossil source can give an environmentally benign contribution to the world electricity production. The European tidal potential alone has been estimated to be 39-58 TWh annually [1]- [3]. A number of projects involved with extracting energy from this resource exist, and most concepts are similar to wind energy converters in that they include a turbine and a generator, e.g. [4]- [7].Wind power is similar to marine current energy as it is concerned with harnessing the kinetic energy in a flowing fluid, and there are many relevant comparisons concerning underlying physics, practical engineering experience, etc. However, there are also a number of significant differences, e.g. resource characteristics. As most parts of the system will be submerged in water and thus not easily accessible, it is good to try to minimize needs for maintenance and repair by avoiding mechanically complex systems with many moving parts. In [8], it is concluded that up to 20 percent of the downtime for a wind power plant is due to gearbox failures, and that the majority of these failures are due to wear. Therefore, avoiding gearboxes, yawing and blade pitching is likely to be beneficial Manuscript

show abstract

Section: B Variable Speed Operation With Fixed Pitch Vertical Axis Tmentioning

confidence: 99%

Matching a Permanent Magnet Synchronous Generator to a Fixed Pitch Vertical Axis Turbine for Marine Current Energy Conversion

Yuen

Thomas

Grabbe

et al. 2009

IEEE J. Oceanic Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The average monthly consumption of energy is 350-400 kW. In such houses, the height of the wind tower, energy consumption is not large, and the main part of the energy consumption is spent on heating and cooling the house [12,13]. Whenever we choose a wind generator, it is necessary to consider the wind speed in the selected mountain systems.…”

Section: Resultsmentioning

confidence: 99%

Researching localization of vertical axis wind generators

Tursunova,

Bozorova,

Ibragimova

et al. 2023

E3S Web Conf.

View full text Add to dashboard Cite

The paper analyses the economic efficiency of using wind power plants in mountainous areas and small residential areas as well as the results of using vertical axis wind devices in areas with low-speed winds. So it became possible to obtain the necessary electrical energy in the less windy regions of Uzbekistan by using vertical axis wind generators. In recent years the demand for electricity is increasing gradually as a result of the sharp growth of direct production enterprises and population consumption. This demand can be compensated by using not only traditional energy sources but also non-traditional energy sources. The use of wind energy is to a certain extent the basis of energy production. Nurato district of Navoi region of Uzbekistan was selected as an object. The problems of saving and shortage of electric energy will be avoided by using the vertical axis wind generator in the regions. By moving the rotor of the wind generator the wind energy is converted into mechanical energy, which generates electrical energy through the generator. Electric power from the generator is provided by a controller that serves to monitor the charge level of the accumulator and is sent to the accumulator through the controller.

show abstract

“…The mirror vortices are very densely packed inside the cylinder, and especially so close to the cylinder center. Although our particular implementation only applies for a cylinder, by using conformal mappings the technique with mirror vortices can be used to simulate other geometries as well [12,13].…”

Section: 3mentioning

confidence: 99%

Dynamic Autotuning of Adaptive Fast Multipole Methods on Hybrid Multicore CPU and GPU Systems

Holm¹,

Engblom²,

Goude³

et al. 2014

SIAM J. Sci. Comput.

View full text Add to dashboard Cite

Abstract. We discuss an implementation of adaptive fast multipole methods targeting hybrid multicore CPU-and GPU-systems. From previous experiences with the computational profile of our version of the fast multipole algorithm, suitable parts are off-loaded to the GPU, while the remaining parts are threaded and executed concurrently by the CPU. The parameters defining the algorithm affects the performance and by measuring this effect we are able to dynamically balance the algorithm towards optimal performance. Our setup uses the dynamic nature of the computations and is therefore of general character.

show abstract

Conformal mapping and efficient boundary element method without boundary elements for fast vortex particle simulations

Cited by 10 publications

References 25 publications

Matching a Permanent Magnet Synchronous Generator to a Fixed Pitch Vertical Axis Turbine for Marine Current Energy Conversion

Matching a Permanent Magnet Synchronous Generator to a Fixed Pitch Vertical Axis Turbine for Marine Current Energy Conversion

Researching localization of vertical axis wind generators

Dynamic Autotuning of Adaptive Fast Multipole Methods on Hybrid Multicore CPU and GPU Systems

Contact Info

Product

Resources

About