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- W1413234987 abstract "Installing the variable-camber inlet guide vanes (VIGV) on aero-engine can both adjust inlet flow of next bladerow and change the pre-spin. In this paper, flow field is numerically predicted at different curvatures of the VIGV. The rotational speed set at 63% of design rotational speed, turbulence model is Spalart - Allmaras, and central difference scheme is chosen as the discrete scheme. Nonlinear harmonic method is adopted to analyzing how the unsteady flow and wake affect next blade row at different time step when curvatures of VIGV set to be 0° and −5°. The effect of wake on relative velocity and outlet flow angle at 0.25T, 0.5T, 0.75T and 1T from 10% to 90% height were analyzed. The results show that wake of rotor affects flow above 50% height, but it has less effect on flow near the hub. The wakes of VIGV have less effect on rotor, but the wake of rotors has more effect on next bladerow. Wake affects less flow of next bladerow when VIGV is adjusted to 0°. Overall, the velocity of −5° VIGV is higher than that of 0° VIGV in rotor passage, and total pressure ratio of −5° VIGV is higher than that of 0° VIGV. The scale of 0° VIGV vortex is bigger than that of −5° VIGV in first stators when the compressor operates near the surge line. Stability range of −5° VIGV is wider than that of 0° VIGV. The performance of the −5° VIGV is better than that of 0° VIGV when operating condition is close to surge line. On the whole, by installing VIGV the performance of aero-engine can be improved, which provides guidance for compressor designers." @default.
- W1413234987 created "2016-06-24" @default.
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- W1413234987 date "2015-06-15" @default.
- W1413234987 modified "2023-09-22" @default.
- W1413234987 title "Flow Analysis of 1.5 Stage Compressor With Variable-Camber Inlet Guide Vanes" @default.
- W1413234987 doi "https://doi.org/10.1115/gt2015-42123" @default.
- W1413234987 hasPublicationYear "2015" @default.
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