1997
DOI: 10.1115/1.2841003
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Performance Assessment of an Annular S-Shaped Duct

Abstract: An experimental investigation has been carried out to determine the aerodynamic performance of an annular S-Shaped duct representative of that used to connect the compressor spools of aircraft gas turbine engines. For inlet conditions in which boundary layers are developed along an upstream entry length, the static pressure, shear stress and velocity distributions are presented. The data show that as a result of flow curvature, significant streamwise pressure gradients exist within the duct, with this curvatur… Show more

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Cited by 49 publications
(29 citation statements)
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“…Numerical results in Figure 12 also validate that the flow loss approximately linear increases with the inlet pre-swirl angle 1 for the CID example. Therefore, it is deduced that the uncambered struts are very weak to resist the CID inflow with circumferential deflection and will further deteriorate the effect of pre-swirl angle.…”
Section: Inlet Pre-swirl Anglesupporting
confidence: 79%
“…Numerical results in Figure 12 also validate that the flow loss approximately linear increases with the inlet pre-swirl angle 1 for the CID example. Therefore, it is deduced that the uncambered struts are very weak to resist the CID inflow with circumferential deflection and will further deteriorate the effect of pre-swirl angle.…”
Section: Inlet Pre-swirl Anglesupporting
confidence: 79%
“…Bailey et al 1 investigated the aerodynamic performance of a compressor S-shaped duct with a single strut (the thickness-chord ratio is 0.12). The blockage of strut was found to have a significant effect on the pressure field of the duct, which has a direct influence on the turbulent flow field.…”
Section: Introductionmentioning
confidence: 99%
“…For maintaining uniform flow and reducing the flow separation struts are placed inside the duct which is limited to max 10 struts [4]. The 2D surface of the S-shape duct revolved into 360°, for the development of 3D geometry of an annular S-shaped transition duct.…”
Section: Parameters Valuementioning
confidence: 99%
“…To reduce the computational time, symmetric planes are created. To analyze flow within 3D duct with struts, NACA '6' series is chosen as they belong to the low drag family [4]. 3D duct with 4 struts, 6 struts and 8 struts are selected for analysis.…”
Section: Parameters Valuementioning
confidence: 99%
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