Effect of the Atmospheric Stability on Wind Energy Density Using Similarity Theory
Year: 2025
Type: article
Abstract: Atmospheric stability is considered one of the most important factors affecting the increase or decrease in wind speed in the atmosphere and thus affecting the wind energy density. Stability conditions are classified into three categories: unstable, stable, and neutral. This study aims to analyze the stability of the atmospheric conditions in Southern Iraq, specifically in the Ali al-Gharbi region, using the Monin-Obukhov length method. Which includes field data for the wind speed at three altitudes (10 m, 30 m, and 50 m) in 2017. The mean daily and seasonal friction velocities were calculated. Wind speed was calculated for different atmospheric stability conditions and its effect on wind power density and wind energy density for each case was studied. The monthly mean wind power density and wind energy density at heights (30 m and 50 m) were estimated. The results showed that the highest values of friction velocity and wind speed were in the summer season, and the lowest values of friction velocity and wind speed were in the autumn season. The daily frictional velocity reaches its highest value at midday. The highest wind energy density was in stable conditions, followed by unstable conditions, while in neutral conditions, wind energy density was the lowest. Also, the highest values of wind power density and wind energy density were in June and July, and the lowest values of wind power density and wind energy density can be observed in January and February. From the results, conclude that the amount of wind energy production is high in stable Atmospheric conditions, and the highest wind energy density was in the summer season.
Source: Baghdad Science Journal
Institution: Mustansiriyah University
Language: English
Subfield: Aerospace Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $150
OpenAlex ID: W4415505067