Results 21 to 30 of about 6,153 (264)

Stall Margin Improvement in a Centrifugal Compressor through Inducer Casing Treatment

open access: yesInternational Journal of Rotating Machinery, 2016
The increasing trend of high stage pressure ratio with increased aerodynamic loading has led to reduction in stable operating range of centrifugal compressors with stall and surge initiating at relatively higher mass flow rates.
V. V. N. K. Satish Koyyalamudi   +1 more
doaj   +1 more source

The influence of a coupled casing on the performance of a multistage compressor under inlet distortion conditions

open access: yesAIP Advances, 2023
In order to increase the stalling margin of a compressor under different inlet conditions, especially under inlet distortion conditions, a new coupled casing processing structure is proposed in this paper.
Hong Xie   +3 more
doaj   +1 more source

Method of Improving Stability of a Highly-Loaded Axial Compressor Stage by Coupling Different Casing Treatments [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
Casing treatment is a powerful method for improving the stability of aircraft compressors. An optimized slot-type casing treatment was tested on the first rotor of a highly-loaded two-stage compressor, and the results showed that the casing treatment ...
Y. Chen, A. Lin, H. Zhang, W. Chu
doaj   +1 more source

A Review of New Experimental Technologies for the Development of Advanced Fans with High Bypass Ratio

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2018
The paper reviews new experimental technologies for the development of advanced fans with high bypass ratios. Most of those developments are carried out in a highly specialized acoustic test facility available at the Central Institute of Aviation Motors (
Victor Mileshin
doaj   +1 more source

Effect of a Recirculating Type Casing Treatment on a Highly Loaded Axial Compressor Rotor

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2019
The tip leakage flow over the blades of an axial compressor rotor adversely affects the axial rotor efficiency and can determine the onset of tip leakage stall.
Motoyuki Kawase, Aldo Rona
doaj   +1 more source

Experimental Investigation and Numerical Simulation of the Casing-Cement Sheath Interface Debonding During Multi-Stage Fracturing

open access: yesShiyou jixie, 2023
The existing research methods are inadequate to accurately characterize the actual casing-cement sheath failure.By combining numerical simulation with laboratory experiment,a test device was developed to measure the casing-cement sheath interface bond ...
Wang Yangang   +5 more
doaj  

Numerical Optimization of a Stall Margin Enhancing Recirculation Channel for an Axial Compressor

open access: yesFluids, 2019
A proof of concept is provided by computational fluid dynamic simulations of a new recirculating type casing treatment. This treatment aims at extending the stable operating range of highly loaded axial compressors, so to improve the safety of sorties of
Motoyuki Kawase, Aldo Rona
doaj   +1 more source

Mechanism of Stability Enhancement with Shallow ‎Reversed Slot-Type Casing Treatment in a Transonic ‎Compressor ‎

open access: yesJournal of Applied Fluid Mechanics, 2021
In this paper, the influence of a shallow reversed slot-type casing treatment on the performance of a tip-critical transonic compressor has been numerically investigated. Firstly, the complex flow fields in the rotor tip region are studied in details. It
Z. D. Chi, W. L. Chu, H. G. Zhang
doaj  

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

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