تعامل جریان دنباله (Wake flow) با پره توربین

ecent Publication | Wake–Blade Interaction(⚔) and Clocking(🕘!) Effects in Low-Pressure Turbines

Axial turbines, as integral components of air-breathing propulsion systems(✈️), operate under highly unsteady flow conditions. Among the various sources of unsteadiness, wake–blade interaction is one of the most complex and influential phenomena, particularly in low-pressure turbine stages.

Wake flows, generated by flow separation and/or the velocity deficit between the pressure and suction sides near the blade trailing edge, are convected downstream and interact with subsequent blade rows. Their unsteady kinematics can significantly influence blade loading, surface velocity distributions, and the overall aerodynamic performance of the turbine.

In our recent comprehensive numerical investigation, we focused(🔎) on:

✅ Identifying and characterizing major flow structures, including blade wakes, tip-side horseshoe vortices and other vortical structures.

✅ Investigating the transient kinematics and evolution of wake flows as they propagate through downstream blade rows.

✅ Evaluating the steady and unsteady effects of wake interactions on overall aerodynamic performance, blade loading, and surface velocity distributions under different blade-row indexing (clocking) positions.

For more details, please see our recent article: “Effects of Blades Rows Clocking on Aerodynamics of a Gas Turbine Low Pressure Axial Turbine” (2026)
published in the Journal of Applied Fluid Mechanics.

10.47176/jafm.19.10.4317
I would be pleased to hear your thoughts and discussions on wake dynamics, blade-row clocking, and unsteady aerodynamic interactions in low-pressure turbines.

#GasTurbine #AxialTurbine #LowPressureTurbine #Turbomachinery #Aerodynamics #CFD #UnsteadyFlow #WakeInteraction #BladeClocking #TurbineAerodynamics