The Structural Stability Analysis of a Container Crane According to the Boom Shape Using Wind Tunnel Test

2007 ◽  
Vol 347 ◽  
pp. 365-372 ◽  
Author(s):  
Seong Wook Lee ◽  
Tae Won Ahn ◽  
Dong Seop Han ◽  
Tae Hyung Kim ◽  
Geun Jo Han
Keyword(s):  
Wind Tunnel ◽  
Structural Stability ◽  
Wind Velocity ◽  
Wind Tunnel Test ◽  
Wind Load ◽  
Wind Resistance ◽  
Container Crane ◽  
Cross Section Area ◽  
Section Area ◽  
Overturning Moment

In this study we carried out to analyze the effect of wind load on the structural stability of a container crane according to the change of the boom shape using wind tunnel test and provided a container crane designer with data which can be used in a wind resistance design of a container crane assuming that a wind load at 75m/s wind velocity is applied on a container crane. Data acquisition conditions for this experiment were established in accordance with the similarity. The scale of a container crane dimension, wind velocity and time were chosen as 1/200, 1/13.3 and 1/15. And this experiment was implemented in an Eiffel type atmospheric boundary-layer wind tunnel with 11.52m2 cross-section area. Each directional drag and overturning moment coefficients were investigated.

The Structural Stability Analysis of an Articulation Type Container Crane Using Wind Tunnel Test

2006 ◽  
Vol 326-328 ◽  
pp. 1197-1200 ◽  
Author(s):  
Seong Wook Lee ◽  
Dong Seop Han ◽  
Geun Jo Han
Keyword(s):  
Wind Tunnel ◽  
Wind Tunnel Test ◽  
Wind Load ◽  
Wind Tunnel Testing ◽  
Velocity Data ◽  
Cross Sectional ◽  
Container Crane ◽  
Overturning Moment ◽  
The Stability ◽  
Uplift Forces

This study was carried out to analyze the effect of wind load on the stability of an articulation type container crane using wind tunnel testing. This was done in order to furnish designers with data that can be used in the design of an articulation type container crane that is wind resistant, assuming an applied wind load of 75m/s velocity. Data acquisition conditions for this experiment were established in accordance with similarity. The scale of the articulation type container crane model, wind speed and time were chosen as 1/200, 1/13.3 and 1/15 respectively and this experiment was conducted using an Eiffel type atmospheric boundary-layer wind tunnel with 11.52m2 cross-sectional area. All directional drag and overturning moment coefficients were investigated and uplift forces due to wind load at each supporting point were analyzed.

Simple and Efficient Methods to Perform the Optimum Matching Between a Reciprocating Piston Pump and a Wind Machine

2021 ◽  
Vol 15 ◽  
pp. 216-221
Author(s):  
Mahmoud Mohamed El-Ghobashy El-Hagar
Keyword(s):  
Wind Velocity ◽  
Theoretical Study ◽  
Piston Pump ◽  
High Wind ◽  
New Methods ◽  
Cross Section Area ◽  
Section Area ◽  
Static Head ◽  
Reciprocating Pump ◽  
Starting Torque

One of the major problems facing the use of the wind driven reciprocating lift pump is the problem of starting. The required starting torque of the pump is at least three times the average torque. This means that the pump will need a high wind velocity just to be started, after that it will continue to operate at a lower wind velocity because of the lower average torque, provided that there is enough inertia in the system. For this reason, the torque characteristics of the wind turbine – reciprocating pump combination are very important. Thus, there is a real need to develop new methods in order to reduce this starting performance of the reciprocating pump. This paper presents a theoretical study to reduce the starting torque of a non-conventional reciprocating piston pump using new methods, for example, changing the wind machine parameters, such as the aerodynamics configuration of the rotor and blade elements, or by studying the effect of wind speed velocity on the starting torque. Also by changing the cross-section area of the piston or by changing the static head of the piston pump or by controlling the flow rate of the piston pump.

scholarly journals Evaluation of Wind-Induced Response Bounds of High-Rise Buildings Based on a Nonrandom Interval Analysis Method

2018 ◽  
Vol 2018 ◽  
pp. 1-14
Author(s):  
Xianglei Wei ◽  
An Xu ◽  
Ruohong Zhao
Keyword(s):  
Wind Speed ◽  
Wind Tunnel ◽  
Wind Tunnel Test ◽  
Wind Load ◽  
Upper And Lower Bounds ◽  
Induced Response ◽  
Response Analysis ◽  
Analysis Method ◽  
High Rise ◽  
Interval Analysis Method

The traditional wind-induced response analysis of high-rise buildings conventionally considers the wind load as a stationary stochastic process. That is, for a certain wind direction angle, the reference wind speed (usually refers to the mean wind speed at the building height) is assumed to be a constant corresponding to a certain return period. Combined with the recorded data in wind tunnel test, the structural response can be computed using the random vibration theory. However, in the actual typhoon process, the average wind speed is usually time-variant. This paper combines the interval process model and the nonrandom vibration analysis method with the wind tunnel test and proposes a method for estimating the response boundary of the high-rise buildings under nonstationary wind loads. With the given upper and lower bounds of time-variant wind excitation, this method can provide an effective calculation tool for estimating wind-induced vibration bounds for high-rise buildings under nonstationary wind load. The Guangzhou East tower, which is 530 m high and the highest supertall building in Guangzhou, China, was taken as an example to show the effectiveness of the method. The obtained boundary response can help disaster prevention and control during the passage of typhoons.

Wind Load on Complex-Shape Building

2010 ◽  
Vol 163-167 ◽  
pp. 4389-4394
Author(s):  
Cheng Qi Wang ◽  
Zheng Liang Li ◽  
Zhi Tao Yan ◽  
Qi Ke Wei
Keyword(s):  
Numerical Simulation ◽  
Wind Tunnel ◽  
Negative Pressure ◽  
Complex Shape ◽  
Wind Tunnel Test ◽  
Wind Load ◽  
Negative Pressures ◽  
Windward Surface

Wind load on complex-shape building, the wind tunnel test and numerical simulation were carried out. The two technologies supplement each other and their results meet well. There are mainly positive pressures on the windward surface, negative pressures on the roof, the leeward surface and the side. Especially, negative pressure is higher in the leeward region of the building corner. Its effect induced by the shape of the complex-shape building is remarkable.

scholarly journals Effects of an Anti-wind Net on Wind Velocity Reduction by a Wind Tunnel Test and CFD

2011 ◽  
Vol 36 (5) ◽  
pp. 355-360 ◽  
Author(s):  
Sung-Hyun Yum ◽  
Seung-Hee Kang ◽  
Seoung-Hee Kim ◽  
Sang-Bong Lee ◽  
Min-Young Kim
Keyword(s):  
Wind Tunnel ◽  
Wind Velocity ◽  
Wind Tunnel Test ◽  
Velocity Reduction
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