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Intake Analysis On Four-Stroke Engine Using CFD

机译:基于CFD的四冲程发动机进气量分析

摘要

Flow pattern is vital to ensure that the engine can produce high performance with the presence of swirl and tumble inside the cylinder. In this paper, the simulation of air isudsimulated in the software to predict the flow pattern using the steady state pressure based solver at two different planes in the engine domain. The domain used for theudsimulation is based on the actual engine parameters. Using the commercial CFD solver ANSYS FLUENT, the CFD simulation is run under five different piston positions and seven different engine speeds. Note that in this simulation, only intake strokes are simulated. The results show the velocity of the flow is high during the sweep as the intake stroke takes place. This situation is believed to produce more swirl and tumble during the compression hence enhancing the burning rate in entire region of the clearance volume.
机译:气流模式对于确保发动机在汽缸内部存在涡流和滚落的情况下能够产生高性能是至关重要的。在本文中,在该软件中模拟了空气模拟,以使用基于稳态压力的求解器在发动机域中两个不同的平面上预测流动模式。用于模拟的域基于实际的发动机参数。使用商用CFD求解器ANSYS FLUENT,可以在五个不同的活塞位置和七个不同的发动机转速下运行CFD仿真。注意,在此模拟中,仅模拟进气冲程。结果表明,在进气冲程发生时,扫掠期间的流速很高。据信这种情况在压缩过程中会产生更多的涡流和翻滚,从而提高了间隙空间整个区域的燃烧速度。

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