CAJ | 학술논문

为了研究节能附体对螺旋桨空泡脉动压力的影响，进行了带节能附体螺旋桨空泡脉动压力的试验研究。在相同的船模伴流场、推力系数和空泡数工况下，测量了桨模、桨模带节能导管和桨模带节能支架时的螺旋桨脉动压力，计算得到螺旋桨脉动压力系数，并换算成实桨脉动压力值。研究并观察记录了相应的螺旋桨空泡形态。试验结果表明，节能导管和节能支架能有效减小螺旋桨脉动压力，减弱或消除毂涡，削减螺旋浆片空泡发生范围；带节能支架的螺旋桨空泡脉动压力性能优于带节能导管的螺旋桨。
위료연구절능부체대라선장공포맥동압력적영향，진행료대절능부체라선장공포맥동압력적시험연구。재상동적선모반류장、추력계수화공포수공황하，측량료장모、장모대절능도관화장모대절능지가시적라선장맥동압력，계산득도라선장맥동압력계수，병환산성실장맥동압력치。연구병관찰기록료상응적라선장공포형태。시험결과표명，절능도관화절능지가능유효감소라선장맥동압력，감약혹소제곡와，삭감라선장편공포발생범위；대절능지가적라선장공포맥동압력성능우우대절능도관적라선장。
The model tests of propeller induced cavitation and the pressure pulses with the energy-saving appendage were con- ducted to study the effect of energy-saving appendages on them. Propeller induced pressure pulses are measured with or without the energy-saving duct/energy-saving holder in the same ship-model wake field under the same KT and σ. The fluctuating pres- sure coefficient and the pressure pulses in the full scale are derived. Three of the main influence factors are studied in the SSSRI cavitation tunnel. Cavity patterns are recorded. The test results show clearly that energy-saving duct/ holder can reduce or e-liminate boss vortex and cut down the sheet eavitation extent, hence, reduce pressure pulses effectively. The experiments also show that cavitation and pressure pulse performance of the propeller with energy-saving holder is better than that with energy-saving duct.