Results 21 to 30 of about 55,977 (241)

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

Journal 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

International 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

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

Shiyou 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, Feng Yongcun, Deng Jingen, Yan Wei, Li Xiaorong, Zhao Yingxiao   +5 more
doaj  

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

International 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

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

Fluids, 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 ‎

Journal 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  

Communication and Language Profiles of Children Treated for Posterior Fossa Brain Tumors

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Cognitive and language deficits are frequently reported sequelae of posterior fossa brain tumors (PFBT). Typically, delayed onset impedes prompt assessment and early intervention. This has devastating implications for quality of life.
Zara Sved, Meghan Hesse, Jennie Cusiter, Annabel Webb, Kimberley Docking   +4 more
wiley   +1 more source

imulation of the flow in the fan stage of a turbofan engine with annular grooves casing treatment

Авіаційно-космічна техніка та технологія
The subject of this study is the working process of the axial fan under the annular groove casing treatment of the turbofan engine. The object of the present study is to investigate the fan impeller of a turbofan engine subjected to an annular groove ...
Andrii Duliepov, Anton Balalaiev
doaj   +1 more source

The HIT Network for Children and Adolescents With CNS Tumors Facilitates Improvements of Diagnostic Assessments, Multimodal Treatments, Individual Counseling, and Research in Germany, Austria, and Switzerland

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background The HIT network was established in 2000 to create a population‐based structure aiming to improve survival rates and reduce late effects for children with central nervous system (CNS) tumors by conducting comprehensive clinical trials.
Stefan Rutkowski, Michael C. Frühwald, Gudrun Fleischhack, Stephan Tippelt, Pablo Hernáiz‐Driever, Olaf Witt, Astrid Gnekow, Christof Kramm, Matthias Eyrich, Johannes E. A. Wolf, Hermann Müller, Carsten Friedrich, Uwe R. Kordes, Denise Obrecht‐Sturm, Petra Ketteler, Barbara von Zezschwitz, Pascal Johann, Dominik Sturm, Karoline Nemes, Stefan Schönberger, Till Milde, Brigitte Bison, Monika Warmuth‐Metz, Torsten Pietsch, Ulrich Schüller, Arend Koch, David Capper, Martin Hasselblatt, Christian Thomas, Christian Hagel, Stefan M. Pfister, Felix Sahm, David T. W. Jones, Martin U. Schuhmann, Jürgen Krauss, Pedram Emami, Ahmed El Damaty, Rolf D. Kortmann, Rudolf Schwarz, Jürgen Debus, Mechthild Krause, Fabian Pohl, Holger Ottensmeier, Lisa Bußenius, Katja Baust, Andreas Faldum, Cecile Ronckers, Desiree Grabow, Martin Benesch, Thomas Perwein, Karin Dieckmann, Irene Slavc, Johannes Gojo, Nicolas U. Gerber, André O. von Bueren, Katrin Scheinemann, Gabriele Calaminus, Beate Timmermann, Ulrich‐Wilhelm Thomale, Martin Mynarek   +59 more
wiley   +1 more source

Stressful Events Reported by Childhood Cancer Survivors and Community Controls From the St. Jude Lifetime (SJLIFE) Cohort: A Mixed Method Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Characterizing stressful events reported by childhood cancer survivors experienced throughout the lifespan may help improve trauma‐informed care relevant to the survivor experience. Methods Participants included 2552 survivors (54% female; 34 years of age) and 469 community controls (62% female; 33 years of age) from the St.
Megan E. Ware, Colter K. Clayton, Fang Wang, Sedigheh Mirzaei, Kyla Shelton, Tara M. Brinkman, Victoria Willard, Katianne M. Howard Sharp, Kevin Krull, Lindsay F. Schwartz, Melissa M. Hudson, Gregory T. Armstrong, Kirsten K. Ness, Rachel T. Webster   +13 more
wiley   +1 more source