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This contribution is dedicated to the modeling of the end-wall flows in a throughflow model for turbomachineryapplications.The throughflow model is based on the Euler or Navier-Stokes equations solved by a Finite-Volumetechnique.Two approaches are presented for the end-wall modeling.The first one is based on an inviscid formu-lation with dedicated 3-D distributions of loss coefficient and deviation in the end-wall regions.The second ap-proach is directly based on a viscous formulation with no-slip boundary condition along the annular end-wallsand blade force modification in the region close to the end-walls.The throughflow results are compared to a se-ries of 3-D Navier-Stokes calculations averaged in the circumferential direction.These 3-D calculations wereperformed on the three rotors of a low pressure axial compressor,for a series of tip clearance values.
This contribution is dedicated to the modeling of the end-wall flows in a throughflow model for turbomachinery applications. The throughflow model is based on the Euler or Navier-Stokes equations solved by a Finite-Volume technique. Two approaches are presented for the end-wall modeling The first one is based on an inviscid formu-lation with dedicated 3-D distributions of loss coefficient and deviation in the end-wall regions. The second ap-proach is directly based on a viscous formulation with no-slip boundary condition along the annular end-walls and blade force modification in the region close to the end-walls. The throughflow results are compared to a se-ries of 3-D Navier-Stokes calculations averaged in the circumferential direction. these 3-D calculations were performed on the three rotors of a low pressure axial compressor, for a series of tip clearance values.