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混流式轉(zhuǎn)輪與導(dǎo)葉相互干涉的非定常數(shù)值模擬
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    摘要:

    針對(duì)HL240型混流式水輪機(jī)轉(zhuǎn)輪在設(shè)計(jì)工況下的三維非定常流動(dòng)現(xiàn)象,，應(yīng)用滑移網(wǎng)格方法考察動(dòng)靜干涉效應(yīng),。采用Fluent計(jì)算軟件,，以N-S方程為控制方程，采用標(biāo)準(zhǔn)k-ε湍流模型和SIMPLEC算法,，對(duì)活動(dòng)導(dǎo)葉,、轉(zhuǎn)輪及尾水管整體流場(chǎng)進(jìn)行了數(shù)值模擬，計(jì)算結(jié)果與實(shí)際情況吻合較好,。通過(guò)非定常計(jì)算,，解釋了轉(zhuǎn)輪葉片上的壓力脈動(dòng)，流道內(nèi)壓力的周期性變化及尾水管中的旋流現(xiàn)象,。

    Abstract:

    In order to study three-dimensional unsteady flow inside HL240 rotor under design condition, sliding mesh was applied to investigate rotor/stator interaction influence. Coupled flow through guide vane, runner, and draft tube was simulated by using Fluent software, N-S equations, standard k-ε turbulence model and SIMPLEC method. Computational result agreed well with practice. The pressure fluctuation near the runner blade surface, periodic pressure variation inside flow passage, and back-flow in draft tube were revealed through unsteady flow analysis. 

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楊昌明,許麗麗,陳次昌.混流式轉(zhuǎn)輪與導(dǎo)葉相互干涉的非定常數(shù)值模擬[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2008,39(2):67-69.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(2):67-69.

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