• Raghu P
• Mr R Senthil Kumaran
• Dr.K S Shashishekar

This paper provides a complete review of the experimental and numerical results demonstrating the aerodynamic performance of a turbine stator cascade. The experimental work involved linear cascade testing in the NAL Transonic Cascade Tunnel (TCT). Used pressure based Navier-Stokes solver of ANSYS CFX for Numerical simulations. The cascade model was tested with two different end wall configurations; straight and contoured converging end walls. By using straight and contoured converging end walls, two different Axial Velocity Density Ratios were simulated. Pitch-wise, wake traverses were carried out across several span locations to map the secondary flow. Experiments were carried out over 0.7 to 1.2 exit Mach numbers at three different angles of incidence including the design condition. Blade loading was measured at three different span locations. Reynolds number close to the actual engine values were simulated during the experiments. Aerodynamic performance parameters like profile loss, flow deflection, blade loading etc., were measured. Oil flow visualization studies were realized to characterize the flow pattern over the blade surfaces and the end walls. Both straight and contoured end wall configurations exhibit similar loss trends at mid span. However, contoured end wall configuration shows fractionally lower pressure loss.

AVDR, blade loading, boundary layer, cascade, flow deflection, profile loss, secondary flow, etc.,

"“AERODYNAMIC PERFORMANCE OF A HIGH-SPEED TURBINE CASCADE WITH AXIALLY CONTOURED ENDWALLS”", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 2, page no.423-432, February-2020, Available :http://www.jetir.org/papers/JETIR2002065.pdf

"“AERODYNAMIC PERFORMANCE OF A HIGH-SPEED TURBINE CASCADE WITH AXIALLY CONTOURED ENDWALLS”", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 2, page no. pp423-432, February-2020, Available at : http://www.jetir.org/papers/JETIR2002065.pdf