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Optimal ratio of bend channel in centrifugal compressor

WEN Suping, HU Xiaowen, LI Tingbin, ZHANG Yong, WANG Jun

Frontiers in Energy 2008, Volume 2, Issue 4, Pages 381-385 doi: 10.1007/s11708-008-0084-4

Abstract: A numerical investigation on the flow in a bend channel by coupling the impeller with the vaneless diffuserin a centrifugal compressor with different ratios (bend radius to bend channel width ) is presentedThe jet-wake effect of the impeller outlet is considered and flow pattern in the bend channel and theThe change in ratio significantly affects the flow angle of the bend channel outlet.The prime reason for the total pressure loss in the bend channel is the wall friction in the bend channel

Keywords： specific compressor different centrifugal compressor pressure impeller

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Inner strain determination of three-dimensional braided preforms with co-braided optical fiber sensors

LI Xianghua, LIU Xiaohui, YUAN Shenfang

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4, Pages 416-420 doi: 10.1007/s11465-008-0062-x

Abstract: Experiments using Michelson interferometers, FBG sensors, and micro-bend sensors are performed to verify

Keywords： different experimental characterization three-dimensional composite micro-bend

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The Regularity of Time of Arrival in 90° Bend Tunnel for Shock Wave due to Explosions From High Explosive

Shen Jun,Li Yongchi,Pang Weibin

Strategic Study of CAE 2006, Volume 8, Issue 3, Pages 53-57

Abstract:

The propagating regularity and its influencing matter of shock wave in a 90° bend tunnel weredata gained from 4 experiments, a formula was proposed which can compute time of arrival in a 90° bendThis formula can also be used to compute velocity of shock in the 90° bend tunnel.

Keywords： internal explosion shock wave time of arrival