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[多场耦合] FSI Analysis of a Hydroelectric Power Plant

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发表于 2011-10-26 09:53:29 | 显示全部楼层 |阅读模式 来自 湖北武汉
   
   Displacement (magnified)

FSI Analysis of a Hydroelectric Power Plant Hydroelectric power plants are used for economic and environmentally friendly electric power generation all around the world. One of the technical challenges in the design of such structures is to consider the fluid-structure interaction effects. For example, when the water pressure fluctuates as it passes through the fluid passage and the hydraulic turbine, it creates a pulsatile loading that causes vibration of the powerhouse structure. In this Brief, we present some results of a study dealing with the vibrations of a powerhouse structure due to the fluid-structure interaction, obtained using ADINA. Figure 1 depicts a schematic of the powerhouse structure, the fluid passage and the turbine. Figure 2 shows the finite element model of the coupled system. The nonlinear transient response of the coupled system was solved using 3000 implicit integration time steps, with a time step of 0.002 seconds (see Ref). The fluid was modeled as a Navier-Stokes fluid. The turbulent behavior of the fluid was modeled using the shear stress transport (SST) model. The sliding mesh boundary condition was used to incorporate the large rotations of the turbine blades.



Figure 1  Schematic of the powerhouse





Figure 2  Finite element mesh of the (a) powerhouse structure (b) turbine (c) fluid




Figure 3  Velocity vector plots (left) and nodal pressure contour plots (right) in the fluid at t = 4.80 s


Figure 3 shows velocity vector and pressure contour plots in the fluid model at the time = 4.80 s. The movies at the top show the z-displacement contour plot of the powerhouse structure, and its time-dependent deformed shape due to the pressure loading from the fluid. The movie below shows the contour plot of the pressure in the fluid.

This case study shows some of the powerful capabilities of ADINA for solving practical fluid-structure interaction problems. For an overview of the fluid-structure interaction analysis capabilities, please visit the following page: Fluid-structure interaction Also, some other applications of ADINA in the turbomachinery industry are presented in the following case studies:
Reference
  • S. Wei, L. Zhang, "Vibration analysis of hydropower house based on fluid-structure coupling numerical method"”, Water Science and Engineering, 3(1): 75-84, 2010
发表于 2011-10-26 15:12:32 | 显示全部楼层 来自 江苏南京
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哇 我师兄做的~~好自豪啊~竟然被adina公司采用了~~~高兴~
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发表于 2011-10-26 16:22:10 来自手机 | 显示全部楼层 来自 北京
这模型挺复杂的,在网格上一定花了不少时间,前处理只用的adina吗?
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发表于 2011-10-26 22:01:35 | 显示全部楼层 来自 江苏南京
本帖最后由 LS_Terminator 于 2011-10-26 22:02 编辑
wild_field 发表于 2011-10-26 16:22
这模型挺复杂的,在网格上一定花了不少时间,前处理只用的adina吗?

这个我知道,就这个模型 师兄暑假都没回家啊~~~好犀利的~~我还有他的模型呢~只是不能上传
完全是adina本身前处理搞定的。。。
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发表于 2011-10-31 22:06:31 | 显示全部楼层 来自 湖北武汉
好牛啊!
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发表于 2012-5-4 18:27:17 | 显示全部楼层 来自 江苏南京
神人啊。。。
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发表于 2012-5-10 18:08:18 | 显示全部楼层 来自 江苏南京
真乃神人也!
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发表于 2012-5-10 19:56:48 | 显示全部楼层 来自 重庆沙坪坝区
太牛了··
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发表于 2013-12-2 21:17:50 | 显示全部楼层 来自 湖北武汉

很牛啊 没看懂
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