Effect of a part-span variable inlet guide vane on the performance of a high-bypass turbofan engine

Bobula, George A.; Soeder, Ronald H.; Burkardt, Leo A.

doi:10.2514/6.1981-1362

Cited by 2 publications

(1 citation statement)

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“…3,10 VIGVs are also used widely in Jiangsu Province Key Laboratory of Aerospace Power Systems, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China fans of conventional turbo-engines for adjusting their working lines. 11,12 M Boehle et al 13 compared the flow fields of VIGVs with that of invariable inlet guide vanes (IIGVs) and determined that the VIGVs had a favorable pressure distribution on the vane surfaces in comparison with the IIGVs and that the flow losses of the VIGVs were lower than those of the IIGVs. C Celis et al 14 proposed correction factors that can be used to modify the compressor characteristics map as a function of the VIGV angles.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic design schemes of the inlet guide vane in a core-driven fan stage

Cao

Zhou

Zhang

2018

Advances in Mechanical Engineering

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A core-driven fan stage operates in both single bypass and double bypass modes. There are large differences in aerodynamic parameters between the two modes. To accommodate the differences, the inlet guide vanes must turn in a very large angle, which may cause significant flow losses. To reduce the flow losses, this article investigates three design schemes in detail using the flow field simulation method. The three schemes investigated include the inlet guide vanes adjusting entirely (Scheme 1), the rear part of the inlet guide vanes adjusting (Scheme 2), and both the front and rear part of the inlet guide vanes adjusting (Scheme 3). Comparisons of the three design schemes suggest that the flow losses in Scheme 1 are higher than those in the other two schemes and that the flow losses in Scheme 3 are not evidently lower than those in Scheme 2. The key geometrical parameters of Schemes 1 and 2 are determined for low flow losses and are used to design the inlet guide vanes. The inlet guide vanes are applied to a core-driven fan stage, and the flow fields are simulated by a three-dimensional flow simulation method to confirm the designs.

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