【摘要】：為了提高余熱排出泵的效率,采用拉丁超立方試驗(yàn)設(shè)計(jì)方法對(duì)葉輪軸面投影圖上的前蓋板圓弧半徑、后蓋板圓弧半徑、前蓋板傾角和后蓋板傾角4個(gè)幾何變量進(jìn)行35組葉輪方案設(shè)計(jì),應(yīng)用ANSYS CFX 14.5軟件對(duì)余熱排出泵進(jìn)行定常數(shù)值模擬,得到設(shè)計(jì)工況下的效率,應(yīng)用徑向基神經(jīng)網(wǎng)絡(luò)建立效率與軸面投影圖的4個(gè)幾何變量之間的近似模型,最后采用遺傳算法對(duì)近似模型進(jìn)行極值尋優(yōu),獲得最優(yōu)的軸面投影圖幾何參數(shù)組合。研究結(jié)果表明:對(duì)比原始泵的數(shù)值模擬性能曲線和試驗(yàn)外特性能曲線,兩者吻合較好;徑向基神經(jīng)網(wǎng)絡(luò)能較好地預(yù)測(cè)泵設(shè)計(jì)點(diǎn)效率;優(yōu)化的軸面投影圖使得余熱排出泵的水力效率提高了6.18個(gè)百分點(diǎn),改善了葉輪內(nèi)流場(chǎng)特性。因此,葉輪軸面投影圖的優(yōu)化設(shè)計(jì)方法是可行的。
[Abstract]:In order to improve the efficiency of waste heat pump, a Latin hypercube experimental design method was used to design 35 impellers with four geometric variables, i.e. the arc radius of the front cover plate, the arc radius of the rear cover plate, the inclination angle of the front cover plate and the inclination angle of the rear cover plate. The constant value of the waste heat pump was simulated by ANSYS CFX 14.5 software. An approximate model between the efficiency and the four geometric variables of the axial projection graph is established by using the radial basis function neural network. Finally, the optimal geometric parameters of the axial projection graph are obtained by optimizing the approximate model with the genetic algorithm. The radial basis function neural network (RBF-NN) can predict the design point efficiency of the pump, and the optimized axial projection diagram can improve the hydraulic efficiency of the waste heat pump by 6.18 percentage points and improve the flow field characteristics of the impeller. Therefore, the optimization design method of the axial projection diagram of the impeller is feasible.
【作者單位】： 江蘇大學(xué)國(guó)家水泵及系統(tǒng)工程技術(shù)研究中心;宜興優(yōu)納特機(jī)械有限公司;
【基金】：“十二五”國(guó)家科技支撐計(jì)劃資助項(xiàng)目(2011BAF14B04) 國(guó)家自然科學(xué)基金資助項(xiàng)目(51349004) 江蘇省自然科學(xué)基金青年基金資助項(xiàng)目(BK20140554) 中國(guó)博士后科學(xué)基金面上資助項(xiàng)目(2014M560402) 江蘇省博士后科研資助項(xiàng)目(1401069B) 江蘇省普通高校研究生科研創(chuàng)新計(jì)劃資助項(xiàng)目(KYLX_1042) 江蘇省高校優(yōu)勢(shì)學(xué)科建設(shè)工程資助項(xiàng)目(PAPD)
【分類號(hào)】：TM623

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 楊軍虎;張?jiān)浦?孟瑞鋒;王s，

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