本文選題：雙水翼 + 折算頻率�。� 參考：《四川大學(xué)學(xué)報(bào)(工程科學(xué)版)》2016年05期

【摘要】：提出了一種雙水翼耦合振蕩捕獲潮流能的系統(tǒng),該系統(tǒng)在河床及淺海具有良好的適應(yīng)性。建立了相應(yīng)系統(tǒng)的數(shù)學(xué)模型及網(wǎng)格模型,將域動(dòng)網(wǎng)格策略用在滑移交界面內(nèi)部流體域,利用Fluent求解繞2維雙振蕩翼流動(dòng)的數(shù)值模型。研究了折算頻率、俯仰振幅及雷諾數(shù)對(duì)NACA0015型雙水翼水動(dòng)力特性及捕獲潮流能性能的影響,以及在不同運(yùn)動(dòng)參數(shù)下水翼的升阻力、俯仰力矩、功率系數(shù)的變化規(guī)律。結(jié)果表明,振蕩水翼的折算頻率、俯仰振幅和雷諾數(shù)會(huì)影響水翼邊界層的分離及周圍漩渦的產(chǎn)生和脫落,繼而影響振蕩翼的升阻力特性和俯仰力矩特性。折算頻率與俯仰振幅對(duì)振蕩水翼系統(tǒng)的捕能效果有較大影響。當(dāng)水翼的振蕩頻率為0.28、俯仰振幅為75°、雷諾數(shù)為5×10~5時(shí)雙水翼耦合振蕩捕獲潮流能系統(tǒng)的水動(dòng)力和捕能性能較好,捕能效率可達(dá)40%。
[Abstract]:In this paper, a coupled oscillatory system of two hydrofoil to capture tidal current energy is proposed. The system has good adaptability in river bed and shallow water. The mathematical model and mesh model of the corresponding system are established. The domain moving mesh strategy is applied to the fluid domain of the slip interface and the numerical model of the two-dimensional oscillating wing flow around the sliding interface is solved by using Fluent. The effects of conversion frequency, pitching amplitude and Reynolds number on the hydrodynamic characteristics and trapping tidal current energy performance of NACA0015 double hydrofoil are studied. The variation rules of lift resistance, pitching moment and power coefficient of the launching wing with different motion parameters are also studied. The results show that the conversion frequency, pitching amplitude and Reynolds number of oscillatory hydrofoil will influence the separation of boundary layer and the generation and shedding of swirl around the hydrofoil, and then affect the characteristics of lift resistance and pitching moment of oscillating hydrofoil. The conversion frequency and pitching amplitude have great influence on the energy capture efficiency of oscillatory hydrofoil system. When the oscillation frequency of hydrofoil is 0.28, the pitching amplitude is 75 擄, and the Reynolds number is 5 脳 10 ~ 5, the hydrodynamic and energy capture performance of the system is better, and the energy capture efficiency can reach 40%.
【作者單位】： 山東大學(xué)機(jī)械工程學(xué)院高效潔凈機(jī)械制造教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51475270) 山東省科技發(fā)展計(jì)劃資助項(xiàng)目(2014GGX104014)
【分類號(hào)】：P743.3

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相關(guān)碩士學(xué)位論文 前2條

1 李鍵輝;雙水翼耦合振蕩捕獲潮流能發(fā)電系統(tǒng)水動(dòng)力性能研究[D];山東大學(xué);2015年

2 王俊芳;二維振蕩水翼的水動(dòng)力特性分析[D];中國海洋大學(xué);2013年

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