نتایج جستجو برای: blade geometry

تعداد نتایج: 155053  

2017
Jingjing Liu Zhihui Zhang Zhenglei Yu Yunhong Liang Xiujuan Li Luquan Ren

The Typha leaf has a structure of lightweight cantilever beam, exhibiting excellent mechanical properties with low density. Especially, the leaf blade evolved high strength and low density with high porosity. In this paper, the structure of Typha leaf was characterized by microcomputed tomography (Micro-CT) and scanning electron microscopy (SEM), and the relationship with flexural properties wa...

2017
Hendrik Eismann Lion Sieg Nicola Etti Lars Friedrich Christian Schröter Philipp Mommsen Christian Krettek Christian Zeckey

BACKGROUND Videolaryngoscopy has been proven to be a safe procedure managing difficult airways in the hands of airway specialists. Information about the success rates in unexperienced users of videolaryngoscopy compared to conventional laryngoscopy is sparse. Therefore, we aimed to evaluate if there might be more success in securing an airway if the unexperienced provider is using a videolaryng...

2002
J. H. Yoon R. F. Martinez-Botas

An experimental investigation of the local film cooling effectiveness and heat transfer coefficient downstream of a row of elongated holes in a simulated axial turbine blade tip is presented. Film cooling is needed to protect the turbine blade tip region from high heat transfer rates, especially when cooling by convection is insufficient to keep the temperature distribution of the blade within ...

Journal: :Energies 2021

This article presents the analysis of performance a flexible wind turbine blade. The simulation is based on 3 m span blade prototype. has surface and cam mechanism that modifies aerodynamic profile adapts to different configurations. was built with fiberglass composite, internal consists structure actuated an eccentric cam. deforms five sections blade, airfoil geometry for each section measured...

2001
Brian Hollon Jamey Jacob

Measurements of the flow field around a low pressure turbine blade are presented. The purpose of the experimental study is to investigate the detailed transition and separation characteristics on low pressure turbine blades. The present study focuses on the effect of Reynolds number on the formation of separation bubbles on the turbine blade surface. Specific attention is paid to the flow withi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1390

in current study, 63 samples of bat populations collected from differ regions were used for evaluating the geographic variations. twenty cranial and dental characters for traditional morphometric and landmarks method on the ventral, dorsal skull and mandible for geometry morphometric studies were used. statistical analyses of traditional morphometric and geometry morphometric data indicated low...

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