本文關(guān)鍵詞：滑閥間隙中方形微米顆粒的旋轉(zhuǎn)現(xiàn)象　出處：《蘭州理工大學(xué)學(xué)報(bào)》2017年05期 　論文類型：期刊論文

  更多相關(guān)文章： 滑閥配合間隙 方形顆粒 流固耦合 旋轉(zhuǎn)現(xiàn)象 軌跡波動

【摘要】：將滑閥微米配合間隙簡化為二維模型,敏感顆粒外形近似為方形.運(yùn)用COMSOL軟件中流固耦合模塊的任意拉格朗日-歐拉方法,對方形微米顆粒在滑閥間隙內(nèi)的運(yùn)動特征進(jìn)行仿真研究.發(fā)現(xiàn)了顆粒在滑閥間隙中的旋轉(zhuǎn)現(xiàn)象,此現(xiàn)象從微觀層面科學(xué)地解釋了非圓球形顆粒物誘發(fā)滑閥卡滯的機(jī)理.流固耦合計(jì)算顯示,微米顆粒跟隨油液流動的同時,顆粒在間隙中產(chǎn)生旋轉(zhuǎn)運(yùn)動,同時顆粒中心的運(yùn)動軌跡有上下波動;均壓槽中顆粒中心的運(yùn)動軌跡呈拋物線狀,徑向位移的最大值約為均壓槽深度的1/4,隨著方形顆粒尺寸的增大,其沿徑向位移的最大值呈減小趨勢.
[Abstract]:The valve clearance is simplified to a two-dimensional model of micron particles, sensitive shape similar to square. The use of any COMSOL software Lagrange FSI module - Euler method, the simulation study on the movement characteristics of square micron particles in valve gap. It is found that the particles in the rotary valve clearance in sliding phenomenon, this phenomenon from the micro level of science to explain the non spherical particles induced mechanism of valve seizure. FSI calculations show that micron particles follow the oil flow at the same time, particles produced rotary motion in the gap, while the center of the particle motion trajectory has fluctuated; trajectory pressure equalizing groove of the particle center is a parabola, the maximum the value of radial displacement of the pressure groove depth is about 1/4, with the increase of the particle size of the square, along the radial displacement of the maximum value decreases.
【作者單位】： 蘭州理工大學(xué)能源與動力工程學(xué)院;甘肅省液壓氣動工程技術(shù)研究中心;
【基金】：國家自然科學(xué)基金(51575254) 國家重點(diǎn)研發(fā)計(jì)劃(2016YFC0304800) 甘肅省自然科學(xué)基金(1508RJYA086)
【分類號】：TH137.52
【正文快照】： (1.College of Energy and Power Engineering,Lanzhou Univ.of Tech.,Lanzhou 730050,China;2.Hydraulic and Pneumatic EngineeringTechnology Research Center of Gansu Province,Lanzhou Univ.of Tech.,Lanzhou 730050,China)滑閥卡滯是引起液壓閥流體控制性能劣化、功能，

本文編號：1346125