龙抬头泄洪洞反弧段空化空蚀研究综述

Summary of study on ogee-section cavitation in longtaitou spillway tunnels

根据国内外大量的工程实例,在前人研究的基础上,系统总结了龙抬头泄洪洞反弧段空化特性和空蚀成因,分析了反弧段掺气减蚀和抗蚀体型的现有成果。体型优化和掺气设施研究,数值试验具有花费少、适应能力强、提供的流场资料详细、便利方案选择等优点。

Based on the previous research since 1981, this paper has given a brief introduction and comments on cavitation of ogee-section in spillway tunnels. Cavitation free configuration of high head flood tunnel, air entrainment and cavitation alleviation are reviewed. Complicated tunnel flow with aeration facilities can be simulated successfully by the combination of the double equations turbulent model, VOF method. The simulation supplies a new measure and method for the study on the flood discharge tunnel.