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本文试验测定了五种排气管模型在轴向进气和进气予旋情况下的阻力系数,得出了一种蜗壳结构简单性能较好的模型。还测定了排气管进口装有动力涡轮承力机匣斜支板时的阻力系数,以及在这种情况下进气予旋的影响。
In this paper, the drag coefficients of five exhaust pipe models under axial inlet and inlet pre-rotation conditions were measured. A simple model of volute structure was obtained. The drag coefficient at the inlet of the exhaust pipe fitted with the bevel support of the power turbine bearing casing was also determined and the effect of intake air pre-rotation in this case.