本文選題：水力旋流器 + 數(shù)值模擬��； 參考：《東北大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年06期

【摘要】：利用RSM雷諾應(yīng)力模型和VOF多相流模型,通過(guò)數(shù)值試驗(yàn)方法考察了漸變截面型入料口夾角對(duì)Φ50 mm水力旋流器流場(chǎng)及壓降的影響.結(jié)果表明,增大入料口夾角,切向速度增加,致使分離效率提高;與此同時(shí),軸向速度和溢流管底端的最大徑向速度也隨之相應(yīng)增加,導(dǎo)致沉砂分流比略有降低、短路流量增加,但對(duì)湍流結(jié)構(gòu)影響不明顯;空氣柱直徑同樣隨著夾角的增加而增大,從而有效分選空間減小.旋流器內(nèi)部的壓力損失主要包括主分離區(qū)域的損失和入料口區(qū)域的損失;增大入料口夾角,總壓降增加,導(dǎo)流能力增強(qiáng),當(dāng)夾角為20°時(shí),導(dǎo)流性能最優(yōu),但能量利用率降低.
[Abstract]:By using RSM Reynolds stress model and VOF multiphase flow model, the influence of the angle between the inlet and the inlet of the graded cross section on the flow field and pressure drop of 桅 50mm hydrocyclone was investigated by numerical experiments. The results show that the separation efficiency is improved by increasing the angle of inlet and the tangential velocity, at the same time, the axial velocity and the maximum radial velocity at the bottom of the overflow pipe increase accordingly, which results in a slight decrease in the sand-sinking diffluence ratio. The short circuit flow rate increases, but the influence on the turbulence structure is not obvious, and the air column diameter increases with the increase of the angle of the air, thus the effective separation space decreases. The pressure loss in the cyclone mainly includes the loss of the main separation region and the inlet area, the increase of the inlet angle, the increase of the total pressure drop and the enhancement of the flow conductivity. When the angle is 20 擄, the diversion performance is optimal, but the energy utilization ratio is reduced.
【作者單位】： 東北大學(xué)資源與土木工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51474054,51504054) 礦物加工科學(xué)與技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室開(kāi)放研究基金資助項(xiàng)目(BGRIMM-KJSKL-2015-04)
【分類(lèi)號(hào)】：TD45
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本文編號(hào)：1912073