Estimation of critical submergence for an intake in a stratified fluid media by neuro-fuzzy approach

Most of the large surface reservoirs are stably stratified throughout most or all of the year. One means of assisting in the management is to allow for the selective withdrawal from the reservoir. The value of the intake’s submergence when the upper layer fluids begin to be drawn into the intake is known as “critical submergence”. In this study, the critical submergence for a circular intake pipe in a stratified body is investigated. Experiments were conducted on a vertically flowing downward intake pipe in a still-water reservoir. Experimental results are compared with that of the neuro-fuzzy models.     

潜深增大对潜艇腐蚀防护影响分析与对策

探讨了大潜深环境下海水的含盐量、温度、溶氧量、pH值及海水流速对潜艇腐蚀的影响,综合分析了大潜深环境对新材料选择和应用、各种有机和无机涂层的腐蚀防护、阴极保护材料和技术及其它腐蚀防护措施的影响,并提出了大潜深环境下潜艇腐蚀防护的对策.