| 摘要 |
A diffuser comprising an inlet passage, an outwardly diverging sidewall, and an outlet. The inlet, outwardly diverging sidewall and outlet each have an inside surface that defines an interior through which a gas or fluid passes in a flow direction from the inlet to the outlet. Wherein at least a region of the inside surface includes a plurality of individual surface features that are configured to reduce or eliminate unwanted boundary layer separation of gas or fluid that passes thereover.
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