摘要
基于相似理论中的不完全自相似假设，研究了固壁紊流流速分布的结构型式。通过对壁面紊流结构的分析，进而给出了固壁紊流包括光滑区、过渡区和粗糙区在内的统一的指数型流速分布公式和阻力规律，并用尼库拉兹的实验资料作了验证。
Based on a new incomplete simiarity assumption of the simiarity theory and the structure of the asymmetric passing flows, a generalized power type velocity distribution formula is proposed for hydraulic smooth region, hydraulic transition rough region and hydraulic rough region wallturbulence. Corresponding to the generalized velocity distribution formula, a skin friction law is derived. Both the velocity distribution formula and the skin friction law are compared with the classic Nikuradre experimental data.
出处
《水科学进展》
EI
CAS
CSCD
北大核心
1999年第1期64-68,共5页
Advances in Water Science
关键词
紊流
流速分布
指数型公式
阻力规律
固壁紊流
turbulent flow
velocity distribution
power type formula
skin friction law
wall effects.
