- 產品品牌:金奧龍
- 產品型號:JOL-練習球
- 產地:廣東深圳
產品類別: | 高爾夫 | 貨號: | JOL-001 |
蜂洞數: | 392 | 規格: | 42.6-42.67 |
內層材料: | 合成橡膠 | 外層材料: | surlyn |
彈性: | 85%以上 | 直徑: | 42.6(mm) |
壓縮硬度: | 80 | 擊打次數: | 1000次以上 |
顏色: | 白色,彩色 | 重量: | 46g |
箱裝數量: | 500 | 是否閃光: | 是 |
加印LOGO: | 可以 | 加工定制: | 是 |
適用送禮場合: | 廣告促銷、商務饋贈、節日、喬遷、生日、頒獎紀念、展銷會、周年慶典、開業典禮、員工福利、公關策劃、球場練習,室內練習,個人練習 |
高爾夫球表面有意制造了許多的凹痕。 高爾夫球的形狀是空氣動力學研究的成果之一。這與球體繞流(即繞球體的流動)的湍流轉捩及分離流現象有關。 光滑球體繞流時,湍流轉捩發生的晚,與湍流對應的規則流動稱為層流。而層流邊界層較易發生流動分 高爾夫球 離現象(即流線離開球的表面),球體迎面形成高壓區,背面形成較大的低壓區,產生很大的阻力(壓差阻力)。使高爾夫球飛行的距離很小。 而球體表面有凹痕時,凹痕促使湍流轉捩發生,湍流邊界層不易發生流動分離現象,從而使球體背后的低壓區小,減少了阻力。使高爾夫球飛行的距離增大。 湍流的摩阻比層流要大,但與形阻相比,起得作用很小,總的阻力還是變小了。 高爾夫球表面的小突起,也能起到促使分離的作用,但突起對流動的干擾有些難以控制,造成一些側向力(也可以叫升力)。
Golf surfaceintentionally produced many dent. Golf is the shape of the air to study the dynamics of one of the results. The ball and the flow around (namely the flow around the sphere of turbulent flow and unprecedented turn phenomena. Smooth flow around sphere, turn the unprecedented turbulence happen late, and turbulence corresponding rules called the laminar flow. Laminar boundary layer and a vulnerable to flow points golf From phenomenon (i.e. streamline the ball away from the surface), sphere formed high head, the reverse side form a larger area of low pressure, generates a lot of resistance (pressure differential resistance). Make golf flight distance is very small. And sphere surface have dent, dent turn to unprecedented turbulence happen, turbulent boundary layer, not cause flow separation phenomenon, so that the ball behind the low pressure area is small, reduce the resistance. Make golf flight distance increased. Turbulence in the friction laminar than, but compared with form resistance, up a small role, total resistance or smaller. Golf surface of small, yea, also can have prompted separation function, but the bumps of the flow interference some difficult to control, causing some lateral force (also can call lift).
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