Geometry dimple effect
WebApr 6, 2015 · The dimples work to break the air around the ball in flight, and have two key characteristics that are measured: Lift and Drag. The ideal dimple design is a … WebNov 14, 2024 · However, for patterns with small geometry scales, although they possess an invariable area density, the greater the abundance and the smaller the size of the concave parts (channels, dimples) on solid–liquid …
Geometry dimple effect
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WebMar 15, 2024 · The effect of the dimples on the performance of the wind turbine is numerically investigated. ... As predicted, the graphs presented in Fig. 7 indicate that when the number of dimples decreases (i.e., the geometry approaches to the no-dimple blades) the values of torque for various dimple radiuses close to the torque value of original HAWT. WebJun 7, 2024 · Keywords: dimple geometry, pipe, recirculation, flow resistance, pressure drop, flow rate, ... a comparison of flow rates through the various dimpled pipes will be made. The effect of dimple size on mass flow rate is provided in Figure 4, where dimple sizes vary from 0.125mm to a maximum of 2mm. It is found that very small dimples …
WebApr 12, 2015 · This study investigated the effect of varying parameters such as the width and depth of surface dimples on the friction coefficient and the maximum shear stress, … WebThe introduction of external surface features on mating contact surfaces is an effective method to reduce friction and wear between the contact surfaces. The tribological …
WebDimples are small concavities imprinted on a flat surface, known to affect heat transfer and also flow separation and aerodynamic drag on bluff bodies when acting as a standard roughness. Recently, dimples have been proposed as a roughness pattern that is capable of reducing the turbulent drag of a flat plate by providing a reduction of skin friction that … WebComparing the friction reduction effect, the elliptical dimples showed the best performance, the square dimples showed the second best results, and the circular dimples performed worst. However, as the test load increased, the fric-tion reduction effect of all dimple shapes decreased; moreover, the differences between the shapes became smaller.
WebOct 3, 2013 · Next, the effects of varying texture geometry characteristics, in particular texture zone circumferential/radial extent, dimple depth, and texture density on the bearing performance indices (load carrying capacity, friction torque, and friction coefficient) are studied, for a representative operating point.
WebSep 1, 2024 · In summary, directional friction effect has been observed in anisotropic surface texturing investigation [36], it is recognised that dimples geometry could be a major factor influencing friction behaviours. However, the mechanisms behind are still unclear, and the local friction response of dimple geometries needs to be further studied. boats for sale in ohio by ownerWebJun 6, 2024 · Wear and wear-induced debris is a significant factor in causing failure in implants. Reducing contact pressure by using a textured surface between the femoral head and acetabular cup is crucial to improving the implant’s life. This study presented the effect of surface texturing as dimples on the wear evolution of total hip arthroplasty. It was … boats for sale in ny stateWebMay 17, 2024 · This study changes the height of dimple for its effect on the heat transfer. It needs a computational domain to simulate turbulent flow. The geometry size of the domain is 490 mm long, 245 mm wide, and 34 mm high. The heat source is placed on the bottom of channel from inlet 98 mm in the X direction and 98 mm from both sides of the channel wall. boats for sale in ohio areaWebDec 30, 2024 · Geometry model. The model used in this study was a 1:10 scale TR-08 high-speed maglev train consisting of a head and a tail car, and running on the Shanghai Maglev demonstration line. At full scale, both vehicles are 27.2 m long. ... The sides and bottoms dimples had little effect on the pressure coefficient of the train tail car. clifty falls madison indiana lodgingWebJan 1, 2024 · Effect of Dimple Geometry on Uni-Directional Sliding Wear Performance. Tribology is a multidisciplinary science of interacting surfaces in relative motion and … boats for sale in okcWebFeb 20, 2024 · 3.4.3 Geometric Effects of Shallow Dimples on the Vorticity Transport. Regardless of whether the planform design or the wall slope (\(K_x\)) is altered, Figs. 18 and 21 both demonstrate that the dimple geometry primarily affects the vorticity transport and the generation of Reynolds stress within layer 2 of the turbulent boundary layer ... boats for sale in ontWebJul 1, 2016 · The effect of dimples geometry in the sliding surface on the tribological properties under starved lubrication conditions @article{Gada2016TheEO, title={The effect of dimples geometry in the sliding surface on the tribological properties under starved lubrication conditions}, author={Lidia Gałda and Jarosław Sȩp and Slawomir Prucnal ... boats for sale in ocean county nj