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Zhengliang Li, Zhisong Wang, Jiahong Li and Siyuan Liu
With the extensive construction of ultra-high voltage (UHV) transmission lines, the fatigue damage of steel tube members caused by vortex-induced vibration (VIV) in tubular towers has received growing attention. Although some progress has been made in th...
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Mingchang Fang, Yanrong Wang, Xianghua Jiang and Peng Tan
The tubed vortex reducer in the axial compressor can destroy the vortex in the disk cavity, by a thin-walled tube, to reduce the total pressure loss. The tube may suffer from vibration problems, such as flutter and forced vibration, which are closely rel...
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Seol Yeon Park, Sang Hee Yoon, Sang Seok Yu and Byoung Jae Kim
A vortex tube is a simple device that separates incoming gas into cold and hot gases. Several theories have been proposed to explain the principle of energy separation in the vortex tube. Existing theories have advantages and defects. Recently, various s...
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Alin Ilie Bosioc, Raul-Alexandru Szakal, Adrian Stuparu and Romeo Susan-Resiga
The current requirements of industrialized countries require the use of as much renewable energy as possible. One significant problem with renewable energy is that the produced power fluctuates. Currently, the only method available for energy compensatio...
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Younes Menni, Ali J. Chamkha, Houari Ameur, Mustafa Inc
Pág. 212 - 223
Improving the hydrodynamic characteristics of STHECs (Shell-and-Tube Heat Exchanger Channels) by using BVGs (Baffle-type Vortex Generators) is among the common passive methods due to their proved efficiency. In this computational investigation, the ...
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Rubén Borrajo Pérez,Jurandir Itizo Yanagihara,Juan José González Bayón
Pág. 165 - 175
In the recent years some papers have dealt with heat exchangers with non-circular tube geometry and vortex generators. Parametric studies with vortex generators applied on heat exchangers models are necessary. The present work consists of an experimental...
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Zunce Wang, Yimin Wang, Jinglong Zhang, Sen Li and Yan Xu
The processing of dimple on the outer wall of tube will produce corresponding protrusion dimple on the inner wall. The turbulent flow and heat transfer performance of a tubular heat exchanger containing a dimpled inner tube is studied numerically. The re...
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Alessia Ruggeri and Carla Faraci
Ripple formation and evolution as well as vortex separation along the bedform profile strongly influence surface waves and sediment transport. These features were investigated in a U-Tube at the Hydraulics Laboratory of the University of Messina. During ...
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Xijie Song, Chao Liu and Zhengwei Wang
The vortex in a pump sump is a negative problem for the pump unit, which can lead to the decline of pump performance. Focusing on the internal pressure characteristics of the floor-attached vortex (FAV) and its influence on the pump unit, the FAV was ana...
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Yaping Zhao, Yanrong Li, Jianjun Feng, Mengfan Dang, Yajing Ren and Xingqi Luo
Tubular turbines are widely used in low water head and tidal power development due to their straight flow path, simple structure, and wide efficient area. However, the severe vibration during actual operation greatly affects the safe operation of the tub...
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Karim Abu Salem, Giuseppe Palaia, Mario R. Chiarelli and Mario Bianchi
The development of novel aircraft concepts and propulsion technologies requires up-to-date physics-based methods and tools for conceptual aircraft design. In this context, a simulation model for the take-off manoeuvre is proposed in this article, to be e...
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Peter F. Pelz, Paul Taubert and Ferdinand-J. Cloos
This paper models the kinematics of the vortex system of an encased axial turbomachine at part load and overload applying analytical methods. Thus far, the influence of the casing and the tip clearance on the kinematics have been solved separately. The v...
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