Feng Lin

TL;DR: In this paper, a numerical investigation on the self-induced unsteadiness in tip leakage flow is presented for a transonic fan rotor, and the originating mechanism of the unslottedness is clarified through time-dependent internal flow patterns in the rotor tip region.

TL;DR: In this article, a model of three-dimensional flow structures of tip leakage flow is proposed accordingly, and the unsteady features of the tip leakage flows, which emerge at the operating points close to stall, are presented and validated with experiment observations.

TL;DR: In this paper, the authors present a numerical study with a novel scheme for a low-speed axial-How compressor by incorporating rotating inlet distortion, which can be observed without advocating the computational difficulty of simulating a fully stalled compressor.

TL;DR: In this paper, a numerical and experimental study was conducted to investigate the tip clearance flow and its relationship to stall in a transonic axial compressor, and the authors found that the existence of an interface between incoming axial flow and the reverse tip-clearing flow was identified as a line of zero axial shear stress at the casing.

TL;DR: In this article, a stall precursor-suppressed (SPS) casing treatment was proposed to improve stall margin without significant efficiency loss in low-speed axial flow compressors and a transonic compressor rotor, and the experimental results showed that the SPS casing treatment can achieve 3.5-9.3% of the SMI at 95% design rotational speed.