Table 1 represents a summary of the previous experimental studies on flow over flat plate.įull size table Effect of inclination angle and aspect ratioĪmong the experimental studies carried out on flow around inclined flat plate, the experiments by Fage and Johansen have gained significant recognition as a benchmark, due to the comprehensive range of parameters investigated therein.
AERODYNAMIC ASPECT RATIO CALCULATOR FREE
Previous studies investigate the effects of different geometric parameters such as the aspect ratio (span to chord ratio), inclination angle, planform shape and blockage effects, as well as free stream velocity, on aerodynamic characteristics of inclined flat plates. This has resulted in renewed interest in investigating this flow problem using state-of-the-art experimental and computational tools. Moreover, from a practical standpoint, this problem is a simplified representation of many modern day wind engineering applications such as solar panels exposed to extreme winds. In many ways it is considered to be the simplest possible bluff body, because it is associated with fixed separation points and minimized distance between the windward side of the body and the wake region. This is partly due to the fundamental nature of the problem. The flow over inclined flat plates has been the subject of many studies over the past century. As a result, larger fluctuations were found for cases with higher aspect ratios. As the aspect ratio increases, the influence of the tip vortices on flow separation from the top and bottom edges reduces. A stable wake was found for this case with no fluctuation. At α = 30° and AR = 0.5, the two tip vortcies control and suppress the flow separation from the top and bottom edges. Visualization of the flow structures shows the tip vortices have a significant role in controlling the shedding vortices from the top and bottom edges. The small aspect ratio suppresses and blocks the separation of the flow from the top and bottom edges causing larger aerodynamic forces relative to AR = 2, 5. Increasing the aspect ratio at a constant inclination angle increases the mean aerodynamic loading except for the α = 30° and AR = 0.5 case where the mean forces are larger than the other aspect ratios for this specific inclination angle. An increase in the inclination angle while the aspect ratio (span to chord) is constant results in higher drag and lower lift on the plate. The Reynolds number based on the free stream velocity and chord length of the plate at different inclination angles varies between 75,000 to 150,000. A thin flat plate is considered at three inclination angles (α = 30°, 60° and 90°) and three aspect ratios (AR = 0.5, 2 and 5). Large Eddy Simulations are carried out to analyze flow past flat plate in different configurations and inclinations.
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