当前位置: X-MOL 学术Annu. Rev. Fluid Mech. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Predicting the Drag of Rough Surfaces
Annual Review of Fluid Mechanics ( IF 27.7 ) Pub Date : 2021-01-06 , DOI: 10.1146/annurev-fluid-062520-115127
Daniel Chung 1 , Nicholas Hutchins 1 , Michael P. Schultz 2 , Karen A. Flack 3
Affiliation  

Reliable full-scale prediction of drag due to rough wall-bounded turbulent fluid flow remains a challenge. Currently, the uncertainty is at least 10%, with consequences, for example, on energy and transport applications exceeding billions of dollars per year. The crux of the difficulty is the large number of relevant roughness topographies and the high cost of testing each topography, but computational and experimental advances in the last decade or so have been lowering these barriers. In light of these advances, here we review the underpinnings and limits of relationships between roughness topography and drag behavior, focusing on canonical and fully turbulent incompressible flow over rigid roughness. These advances are beginning to spill over into multiphysical areas of roughness, such as heat transfer, and promise broad increases in predictive reliability.

中文翻译:


预测粗糙表面的阻力

可靠的全面预测由于粗糙的壁面湍流引起的阻力仍然是一个挑战。当前,不确定性至少为10%,其后果例如对能源和运输应用的影响每年超过数十亿美元。困难的症结在于大量相关的粗糙度地形图和测试每种地形图的高昂成本,但是最近十年左右的计算和实验进展一直在降低这些障碍。根据这些进展,我们在这里回顾了粗糙度地形和阻力行为之间关系的基础和局限性,重点是刚性粗糙度上的规范和完全湍流的不可压缩流。这些进展开始扩散到粗糙度的多物理区域,例如传热,

更新日期:2021-01-07
down
wechat
bug