Control of Tip Leakage in a High Pressure Turbine Cascade Using Tip Blowing [PDF]
Journal of Turbomachinery, 2016 Blowing from the tip of a turbine blade was studied experimentally to determine if total pressure loss could be reduced. Experiments were done with a linear cascade in a low-speed wind tunnel. Total pressure drop through the blade row and secondary velocity fields in the passage between two blades were measured.
Ralph J Volino, Volino Ralph J
exaly +2 more sources
International Journal of Turbomachinery, Propulsion and Power, 2023 The tip gap region of an axial compressor rotor is a source of complex flows, inducing losses and stability issues. Recent works have proven the ability of blowing high-speed jets in the tip region to improve the surge margin of an axial compressor stage
Clémence Rannou +3 more
doaj +1 more source
A Numerical Study on the Flap Side-Edge Noise Reduction Using Passive Blowing Air Concept
Aerospace, 2023 The flap side-edge is a vital contributor to airframe noise. In this study, we propose a novel flap side-edge noise reduction method based on the concept of active blowing air.
Yingzhe Zhang +3 more
doaj +1 more source
Dusting Hole Film Cooling Heat Transfer on a Transonic Turbine Blade Tip
International Journal of Rotating Machinery, 2022 Investigated is a transonic turbine blade tip with a squealer rim and a squealer recess, with a single dusting film cooling hole contained within the leading edge region of the squealer recess.
Ward Manneschmidt +6 more
doaj +1 more source
Stall Margin Improvement in an Axial Compressor by Continuous and Pulsed Tip Injection
International Journal of Turbomachinery, Propulsion and Power, 2022 Stall and surge are strong limitations in the operating range of compressors and thus one of the major limits of jet engine performance. A promising way to push the stability limit of compression machines is to inject a small amount of flow at the blade ...
Joseph Moubogha Moubogha +4 more
doaj +1 more source
Experimental Investigation on the Combined Blowing Control of a Hybrid Wing Body Aircraft
Actuators, 2023 Combined blowing was performed on a Hybrid Wing Body (HWB) aircraft through wind tunnel testing at a Reynolds number of 1.75 × 106. The full cycle of separation and reattachment under the control of combined blowing was implemented using Computational ...
Jiaxin Pan +5 more
doaj +1 more source
Enhancement of Wind Turbine Performance Using Air- Blowing Technique by Modified Strong Implicit Procedure (MSIP) Optimization Solver Method [PDF]
Engineering and Technology Journal, 2014 A powerful intensifier of friction in air flows affects the lift and drag coefficients, the flow separation plays a vital part in aerodynamic characteristics for technical applications.
Abdulhadi Mohammed Jawad +3 more
doaj +1 more source
Numerical Study Of Heat Transfer In Cooling Passages Of Turbine Blade
Journal of Engineering, 2023 As the temperature of combustion gases is higher than the melting temperature of the turbine materials, cooling of turbine parts in a gas turbine engine is necessary for safe operation.
Ahmed F. Khudheyer, Hussein T. Dhaiban
doaj +1 more source
Shoulder pain syndrome after gynecological laparoscopic surgery: Mechanisms and methods of prevention: A review study [PDF]
Majallah-i Zanān, Māmā̓ī va Nāzā̓ī-i Īrān, 2023 Introduction: A better understanding of the mechanism and / or pathophysiology of shoulder pain syndrome after laparoscopic gynecological surgery leads to an increase in the number of clinical trials to prevent this complication.
Jamshid Ordoni Avval +6 more
doaj +1 more source
Helicopter performance enhancement by alleviating retreating blade stall using active flow control
Scientific African, 2023 In this study, a model was created numerically to study the effect of active flow control on helicopter blade to improve the retreating blade stall. Active flow control is applied to helicopter blades to improve retreating blade stall along with the ...
Tarek Mokhtar Tawfik Soltan +1 more
doaj +1 more source