(中南大學(xué) 機(jī)電工程學(xué)院，長(zhǎng)沙 410083)
摘 要: 為掌握海底采礦作業(yè)車導(dǎo)管螺旋槳推進(jìn)器水動(dòng)力學(xué)性能影響因素，有效提高水動(dòng)力性能，對(duì)19A Ka-4-55型號(hào)導(dǎo)管螺旋槳進(jìn)行參數(shù)化建模，采用CFD方法對(duì)其水動(dòng)力性能進(jìn)行仿真分析，獲得19A Ka-4-55導(dǎo)管螺旋槳在不同進(jìn)速下的水動(dòng)力系數(shù)。將結(jié)果與其試驗(yàn)經(jīng)驗(yàn)值進(jìn)行擬合，并搭建試驗(yàn)平臺(tái)驗(yàn)證仿真，分析不同槳葉數(shù)以及斜流影響下的導(dǎo)管螺旋槳水動(dòng)力性能。結(jié)果表明：CFD數(shù)值仿真結(jié)果與導(dǎo)管螺旋槳試驗(yàn)圖譜吻合，在一定范圍內(nèi)較多槳葉數(shù)能提高推力，但較少槳葉數(shù)效率更高，螺旋槳力矩系數(shù)與其槳葉數(shù)成正比關(guān)系；斜流作用下，導(dǎo)管對(duì)螺旋槳的保護(hù)和導(dǎo)流作用可以減少螺旋槳壓力參數(shù)，降低螺旋槳空泡發(fā)生率，導(dǎo)管螺旋槳水動(dòng)力性能明顯優(yōu)于無(wú)導(dǎo)管螺旋槳的水動(dòng)力性能。
關(guān)鍵字: 導(dǎo)管螺旋槳；CFD；淌水效率；槳葉數(shù)；斜流
（School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China）
Abstract:In order to grasp the influencing factors of the hydrodynamic performance of the ducted propeller of the submarine operating vehicle, and effectively improve the hydrodynamic performance, the 19A Ka-4-55 ducted propeller was modeled parametrically, and its hydrodynamic performance was simulated and analyzed by the CFD method. The hydrodynamic coefficients of the 19A Ka-4-55 ducted propeller at different advance speeds were obtained. The results were fitted with experimental experience values, and a test platform was built to verify the simulation, and the hydrodynamic performance of the ducted propeller under the influence of different numbers of blades and diagonal flow was analyzed. The results show that the CFD numerical simulation results are consistent with the ducted propeller test chart. In a certain range, more blades can increase thrust, but fewer blades are more efficient, and the propeller moment coefficient is proportional to the number of blades; Under the diagonal flow action, the protection and diversion effect of the duct on the propeller can reduce the propeller pressure parameters and reduce the incidence of propeller cavitation. The hydrodynamic performance of the ducted propeller is significantly better than that of the ductless propeller.
Key words: ducted propeller; CFD; flowing efficiency; number of blades; oblique flow
