... compressor computations, this paper maps efficiency as a function of mean-line aerodynamics, and determines the governing loss mechanisms. An open-source turbomachinery design code creates annulus and blade geometry, then runs a Reynolds-averaged Navier–Stokes simulation for compressors sampled from the mean...

... , X. , 2013 , “ Experimental Study of Surge Precursors in a High-Speed Multistage Compressor ,” ASME J. Turbomach. , 135 ( 6 ), p. 061018 . 10.1115/1.4023462 [3] Vo , H. D. , Tan , C. S. , and Greitzer , E. M. , 2008 , “ Criteria for Spike Initiated Rotating Stall ,” ASME...

... compressor and turbine aerodynamic design fluid dynamics and heat transfer phenomena in compressor and turbine components of gas turbine engines References [1] Liepmann , H. W. , 1946 , “ The Interaction Between Boundary Layer and Shock Waves in Transonic Flow ,” J. Aeronaut. Sci...

...Jichao Li; Yang Liu; Feng Peng; Hongwu Zhang Adaptive stability control is experimentally implemented in a single-stage axial flow compressor subjected to rotating inlet distortion. Stall margin variations are examined as a function of the distorted area and rotational speed. A critical minimum...

.... 10.1115/GT2020-15479 [5] Mårtensson , H. , 2021 , “ Harmonic Forcing From Distortion in a Boundary Layer Ingesting Fan ,” Aerospace , 8 ( 3 ), p. 58 . 10.3390/aerospace8030058 [6] Tyler , J. M. , and Sofrin , T. G. , 1962 , “ Axial Flow Compressor Noise Studies ”, SAE...

...Laura McLaughlin; Stephen Spence; Daniel Rusch; Charles Stuart; Marco Geron; Kwok Kai So; Magnus Fischer Often, an improvement in performance at one operating point in a compressor/turbine operating map will lead to a reduction in performance at another area. For example, improving the efficiency...

... of secondary flow phenomena. This article experimentally investigates the secondary flow effects in the 3D-optimized shrouded stator of the TUDa-GLR-OpenStage, representative of a transonic high-pressure compressor front stage, and its susceptibility to typical hub leakage flows. The impact of stator hub...

...Helmut Sauer; Martin Lange A group of unsteady flow phenomena in turbomachinery is often referred to as “rotating instabilities.” They occur at flow conditions with very asymmetric velocity profiles, as found downstream of blade rows in axial compressors with large rotor tip clearance in stable...

... data on axial compressor rotor test objects in a controlled manner. The test facility is built as a closed loop and thus enables operation at variable pressure levels ranging from near-vacuum to overpressure and with different operating media. Overall damping test data are acquired at controlled...

... by a turbine vane frame (TVF), an S-shaped duct with turning struts and splitters, and a shrouded counter-rotating LP rotor. The inlet temperature of the rig can be adjusted between 40 °C and 185 °C by cooling the air from the compressor station. The air enters the rig through the mixing chamber and passes...

... region close to the tip, known as belly, as an effective method of extending the operating range of low-speed axial compressor rotors. In the literature, circumferential grooves are another well-described technique for improving the stable working range of a compressor rotor. No research has been...

... of the 38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit , Indianapolis, IN , July 5–10 p. 3790 . [3] Cumpsty , N. A. , 2004 , Compressor Aerodynamics , Krieger , Malabar, FL . [4] Denton , J. D. , 1993 , “ IGTI Scholar Lecture: Loss Mechanisms in Turbomachines...

...Giuliano Agati; Paolo Venturini; Serena Gabriele; Franco Rispoli; Domenico Borello One of the main reasons for gas turbines’ performance losses is the deposition of dirt on the compressor blades. Dirt deposit has to be periodically removed to keep the engine performance as high as possible...

... Turbine Institute (IGTI) of ASME for publication in the J ournal of T urbomachinery . 23 08 2023 06 11 2023 06 11 2023 16 01 2024 boundary layer development computational fluid dynamics (CFD) fan compressor turbine aerodynamic design To transform global air...

... low-pressure turbine low-speed linear cascade test profile loss wake interaction loss control volume analysis boundary layer development fan compressor and turbine aerodynamic design turbine blade and measurement advancements For low-pressure turbines of a high bypass ratio turbofan...

...James V. Taylor; Anthony M. J. Dickens; Harry Simpson The over tip leakage flow in an unshrouded compressor blade row is highly three dimensional, yet in order for aerodynamicists to analyze and improve designs, they must be able to simplify the problem down to a limited number of mechanisms...

... (CFD) fan squirrel-cage fan compressor turbine aerodynamic design turbomachinery blading design China Postdoctoral Science Foundation 10.13039/501100002858 2022M721238 Squirrel-cage fans (SCFs) are unique centrifugal fans characterized by a large diameter ratio, a large...

...Xiawen Zhang; Yaping Ju; Zhen Li; Feng Liu; Chuhua Zhang High efficiency and wide stability at variable speeds are equally important to the design and operation of multistage axial flow compressors. However, published research works on three-dimensional design optimization of compressors are so far...

... component interactions, which compromise aerodynamic performance. In this paper, a fully annular, low-speed test facility incorporating a 1½ stage axial compressor is used to examine the flow in the last stage of a low-pressure compressor and the downstream transition duct. The transition duct incorporated...

...Weibo Zhong; Yangwei Liu; Yumeng Tang Corner separation is an inherently unsteady flow feature in an axial compressor cascade, and it significantly affects the aerodynamic performance of compressors. The flow field of a highly loaded compressor cascade at the Mach number of 0.59 under the moderate...