本文選題：流場(chǎng)　切入點(diǎn)：Workbench仿真　出處：《液壓與氣動(dòng)》2017年10期

【摘要】：針對(duì)某型號(hào)汽油機(jī)缸蓋的冷卻性能進(jìn)行了流場(chǎng)仿真分析。基于現(xiàn)代反求技術(shù)獲得汽缸蓋精確的3D模型,通過布爾運(yùn)算獲得內(nèi)部真實(shí)流道模型。使用ICEM對(duì)其進(jìn)行網(wǎng)格劃分并設(shè)置恰當(dāng)?shù)倪吔鐥l件,通過Fluent運(yùn)算最終得到流道的速度流線場(chǎng)、換熱系數(shù)場(chǎng)和壓力分布場(chǎng)。對(duì)其進(jìn)行分析可知該缸蓋整體冷卻性能正常,但4缸之間冷卻效果存在顯著差異。進(jìn)行優(yōu)化分析后可知總體冷卻效果提升顯著,但對(duì)改善流道速度分布均勻性作用不大,并指出了局部流動(dòng)死區(qū)。
[Abstract]:The flow field simulation analysis of the cooling performance of a certain type of gasoline engine cylinder head is carried out. Based on the modern reverse technique, the accurate 3D model of the cylinder head is obtained. The internal real flow channel model is obtained by Boolean operation. The ICEM is used to mesh it and set the appropriate boundary conditions. Finally, the velocity streamline field of the channel is obtained by Fluent operation. The heat transfer coefficient field and pressure distribution field show that the overall cooling performance of the cylinder head is normal, but there are significant differences between the four cylinders. But it has little effect on improving the uniformity of velocity distribution, and points out the dead zone of local flow.
【作者單位】： 四川理工學(xué)院機(jī)械工程學(xué)院;
【分類號(hào)】：TH137.51;TK413
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本文編號(hào)：1684852