發(fā)布時(shí)間：2018-02-10 08:05

  本文關(guān)鍵詞： 假塑性流體 錯(cuò)位六彎葉槳 流固耦合 預(yù)應(yīng)力模態(tài)分析　出處：《化工學(xué)報(bào)》2017年06期 　論文類型：期刊論文

【摘要】：基于ANSYS Workbench分析平臺(tái),采用雙向流固耦合計(jì)算方法,對(duì)錯(cuò)位六彎葉攪拌器(6PBT)和六彎葉攪拌器(6BT)的動(dòng)力學(xué)特征進(jìn)行了對(duì)比分析,根據(jù)槳葉與流體之間相互耦合運(yùn)動(dòng)特性,探討了宏觀流場(chǎng)的結(jié)構(gòu)和攪拌功耗特性,分析了槳葉的變形和等效應(yīng)力分布,并對(duì)6PBT槳在靜態(tài)和預(yù)應(yīng)力狀態(tài)下的模態(tài)進(jìn)行了對(duì)比研究。結(jié)果表明:同6BT槳相比,6PBT槳葉端部變形量增加了8%,端部應(yīng)力提高了61%,而根部應(yīng)力降低了6.7%,應(yīng)力沿徑向呈均勻化分布,這表明錯(cuò)位槳對(duì)流體的作用力更大,能夠更快地傳遞能量,同時(shí)槳葉強(qiáng)度也得到相應(yīng)提高;6PBT槳的靜模態(tài)與預(yù)應(yīng)力模態(tài)振型分布一致,在施加預(yù)應(yīng)力后模態(tài)頻率無(wú)明顯改變,說(shuō)明槳葉流場(chǎng)的流固耦合作用和預(yù)應(yīng)力對(duì)槳葉模態(tài)的影響不大;隨轉(zhuǎn)速的增大,6PBT槳的節(jié)能效果顯現(xiàn),體現(xiàn)出錯(cuò)位槳的優(yōu)勢(shì)。
[Abstract]:Based on the ANSYS Workbench analysis platform, the dynamic characteristics of the staggered six curved blade agitator (6PBT) and the six curved blade agitator (6BTT) are compared and analyzed by using the two-way fluid-solid coupling calculation method. According to the coupled motion characteristics between the blades and the fluid, the dynamic characteristics of the six bend blade agitators are compared and analyzed. The structure of macroscopic flow field and the characteristics of stirring power consumption are discussed. The deformation and equivalent stress distribution of the blade are analyzed. The results show that compared with the 6BT propeller, the deformation at the end of the blade increases by 8 and the stress at the end increases by 61, while the stress at the root decreases by 6.7, and the stress distributes evenly along the radial direction. The results show that the force of the staggered propeller on the fluid is greater and the energy can be transferred more quickly. At the same time, the strength of the blade is also increased correspondingly, and the static mode mode distribution is consistent with the prestressing mode mode mode distribution, and the modal frequency does not change obviously after the prestressing force is applied. The results show that the fluid-solid coupling and prestress of blade flow field have little effect on blade mode, and the energy saving effect of 6PBT propeller is obvious with the increase of rotating speed, which shows the advantage of staggered propeller.
【作者單位】： 青島科技大學(xué)機(jī)電工程學(xué)院;
【基金】：山東省自然科學(xué)基金項(xiàng)目(ZR2014EEM017) 山東省科技發(fā)展計(jì)劃項(xiàng)目(2013YD09007)~~
【分類號(hào)】：TQ027.2

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