A two-phase wind speed simulation model considering diurnal and seasonal patterns and its application to adequacy assessment

2021 ◽  
Vol 13 (5) ◽  
pp. 053304
Author(s):  
Shuwei Miao ◽  
Haoran Xiong ◽  
Dan Li ◽  
Yingzhong Gu
Keyword(s):  
Wind Speed ◽  
Simulation Model ◽  
Seasonal Patterns ◽  
Two Phase ◽  
Adequacy Assessment ◽  
Speed Simulation

scholarly journals A Method Based on Numerical Wind Field and Extreme Learning Machine for Typhoon Wind Speed Prediction of Wind Farm

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Hong Xu ◽  
Wan-Yu Wang
Keyword(s):  
Wind Speed ◽  
Simulation Model ◽  
Extreme Learning Machine ◽  
Wind Farm ◽  
Wind Farms ◽  
Wind Speed Prediction ◽  
Speed Prediction ◽  
Learning Machine ◽  
Speed Simulation ◽  
Typhoon Wind

Typhoon wind speed prediction is of great significance for it can help prevent wind farms from damages caused by frequent typhoon disasters in coastal areas. However, most researches on wind forecast are either for meteorological application or for normal weather. Therefore, this paper proposes a systematic method based on numerical wind field and extreme learning machine for typhoon wind speed prediction of wind farms. The proposed method mainly consists of three parts, IGA-YanMeng typhoon numerical simulation model, typhoon status prediction model, and wind speed simulation model based on an extreme learning machine. The IGA-YanMeng typhoon numerical simulation model can greatly enrich typhoon wind speed data according to historical typhoon parameters. The typhoon status prediction model can predict the status of typhoons studied in the next few hours. And wind speed simulation model simulates the average wind speed magnitude/direction at 10 m height of each turbine in the farm according to the predicted status. The end of this paper presents a case study on a wind farm located in Guangdong province that suffered from the super typhoon Mangkhut landed in 2018. The results verified the feasibility and effectiveness of the proposed method.

scholarly journals Numerical wind speed simulation model

1981 ◽  
Author(s):  
J.V. Ramsdell ◽  
G.F. Athey ◽  
M.Y. Ballinger
Keyword(s):  
Wind Speed ◽  
Simulation Model ◽  
Speed Simulation

scholarly journals The Study of Sand-blocking Characteristic and Flow Field Simulation Analysis of the Ring-shaped Sand-barrier

2018 ◽  
Vol 38 ◽  
pp. 01044
Author(s):  
Wei Qiang Zheng ◽  
Wen Jun Wei ◽  
Ping Yi Liu
Keyword(s):  
Wind Speed ◽  
Wind Direction ◽  
Simulation Analysis ◽  
Inertia Force ◽  
Two Phase ◽  
Wind Speeds ◽  
Sand Control ◽  
Before And After ◽  
Sand Flow ◽  
Laminar Flow Model

Aiming at the complexity of wind direction and irregular sand flow in a desert area, a combinatorial ring-shaped sand barrier is used. Stokes law of inertia force and centrifugal force and gravity sedimentation are used. With CFD fluid software Fluent, laminar flow model Equation and κ-ε turbulence model, the wind speed of the sand in the sand-gas-solid two-phase flow passing through the circular sand barrier is studied at different distances and different altitudes after the sand barrier, the wind speeds before and after the sand barrier are compared and analyzed . The mean minimum wind speed behind the single sand barrier was reduced by 32.5% -49.4% compared with that before the sand barrier. The wind speed at different height of the composite sand barrier was reduced by 30% -58.3% compared with the inlet wind speed, which solved the problem of irregular wind and sand control in the desert wind direction.

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