The dimple density, denoted by the parameter β, is defined as the ratio of the projected area of the dimples on a plane to the total surface area. This parameter represents the physical significance of the dimple density [11].

2023年7月1日 · Dimple area density (ρ) is defined as the ratio between the dimple-texture area and the non-textured (smooth surface) area on the hypothetical unit cell, whereas aspect ratio (λ) is defined as the ratio of dimple depth to dimple diameter [20].

2019年4月30日 · The fabricated dimple measures (20 µm–4 mm) in diameter, (7–40%) in area ratio, and (200 nm–100 µm) in depth, which were reported to be excellent values for tribology.

2014年5月12日 · It has been proven that the area density of the dimple pattern is a critical parameter for hydrodynamic pressure generation. However, the optimal values of area density obtained by theoretical models are usually different to that obtained from experiments, which show material dependence.

3 天之前 · Numerical simulations investigated the convective heat transfer and friction factor characteristics over the surface with an array of shallow dimples in a rectangular channel. Circular and oval dim...

The dimple pattern with an area density of 29.9% shows an obvious decrease in friction coefficient. The maximum decreasing value is about 80.3% at the condition of 100 r/min …

2025年2月21日 · The higher dimple density associated with smaller dimples allows for improved lubricant retention, better hydrodynamic lift, and enhanced load distribution. For example, at 25% surface density, the 300 mm 2 contact area in a hip joint can accommodate 15.3 million 5 μm diameter dimples—44 times more than the 38,000 dimples possible with a 100 ...

必应词典为您提供dimple的释义，美 [ˈdɪmp (ə)l]，英 ['dɪmpl]，n. 酒窝；凹痕；凹处；波纹； v. (使)生酒窝；做出凹痕； (使)起波纹； (使)起涟漪； 网络释义： 酒涡；笑靥；凹坑；

" When a package is dimpled or wrinkled, lighting can bounce around all over the place and that can really pose a problem, " he says. “ 当 一个 包 酒窝 或 皱纹， 照明 可以 反弹， 所有 的 地方， 才能 真正 构成 问题， ” 他 说。 4. Her hoop skirt flung up exposing her dimpled pasties. In a second I was upon her nudging her between the buns with my lobolier.

It has been proven that the area density of the dimple pattern is a critical parameter for hydrodynamic pressure generation. However, the optimal values of area density obtained by...