本文選題：非光滑表面 + 減阻��； 參考：《機械設計與制造》2017年11期

【摘要】：旨在研究不同非光滑管道壁面流體摩擦阻力特性差異。基于仿生學原理和平板邊界層理論,設計凹坑型、凸起型和波浪型3種非光滑管道壁面造型;采用數值模擬方法揭示不同非光滑管道壁面形態(tài)對流體摩擦阻力的影響規(guī)律;針對減阻性能最佳的凹坑型非光滑管道壁面,探索不同排列方式與流體減阻性能的關系。計算結果表明:凹坑型非光滑管道壁面沿程阻力系數最小,相比基準管道壁面模型其減阻率可提高35.57%;均勻排列方式的管道沿程減阻效果最顯著。研究可對管道內壁面基于紋理減阻提供一定的參考依據。
[Abstract]:The purpose of this paper is to study the friction resistance characteristics of different non-smooth pipes. Based on the theory of bionics and the theory of flat boundary layer, three kinds of wall modeling of non-smooth pipe are designed, such as pit shape, protruding type and wave type, and the influence of wall shape of different non-smooth pipe on friction resistance of fluid is revealed by numerical simulation method. Aiming at the wall of the pit type non-smooth pipe with the best drag reduction performance, the relationship between the different arrangement modes and the drag reduction performance of the fluid is explored. The results show that the drag coefficient along the wall of the pit type non-smooth pipeline is the smallest, and the drag reduction rate can be increased 35.57 compared with the reference pipe wall model, and the drag reduction effect of the uniform arrangement is the most obvious. The study can provide a certain reference for texture-based drag reduction on the inner wall of pipeline.
【作者單位】： 廈門理工學院機械與汽車工程學院;福建僑龍專用汽車有限公司;
【基金】：國家外專局高端外國專家項目(GDT20153600065) 福建省教育廳JK項目(JK2014036)
【分類號】：TH16

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本文編號：1919211