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基于ANSYS CFX的安全阀开启过程的数值模拟 被引量:1
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作者 闵加丰 朱海清 《轻工机械》 CAS 2014年第6期40-43,共4页
以A42Y型弹簧式安全阀为研究对象,利用ANSYS CFX软件对安全阀开启过程进行数值模拟,得到了安全阀从开始开启到稳定排放阶段介质对阀瓣作用力随时间的变化曲线,以及特定时刻的压力场分布。并且根据安全阀稳定排放时的介质作用力计算得到... 以A42Y型弹簧式安全阀为研究对象,利用ANSYS CFX软件对安全阀开启过程进行数值模拟,得到了安全阀从开始开启到稳定排放阶段介质对阀瓣作用力随时间的变化曲线,以及特定时刻的压力场分布。并且根据安全阀稳定排放时的介质作用力计算得到流道等效半径,对安全阀开启过程动态特性研究以及安全阀在线校验中流道有效面积计算提供了一定的指导和依据。 展开更多
关键词 压力容器 安全阀 数值模拟 ANSYS CFX软件 介质作用力 压力场
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Interaction due to various sources in saturated porous media with incompressible fluid
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作者 Rajneesh Kumar Ibrahim A.Abbas 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第5期1232-1242,共11页
The disturbance due to mechanical and thermal sources in saturated porous media with incompressible fluid for two-dimensional axi-symmetric problem is investigated.The Laplace and Hankel transforms techniques are used... The disturbance due to mechanical and thermal sources in saturated porous media with incompressible fluid for two-dimensional axi-symmetric problem is investigated.The Laplace and Hankel transforms techniques are used to investigate the problem.The concentrated source and source over circular region have been taken to show the utility of the approach.The transformed components of displacement,stress and pore pressure are obtained.Numerical inversion techniques are used to obtain the resulting quantities in the physical domain and the effect of porosity is shown on the resulting quantities.All the field quantities are found to be sensitive towards the porosity parameters.It is observed that porosity parameters have both increasing and decreasing effect on the numerical values of the physical quantities.Also the values of the physical quantities are affected by the different boundaries.A special case of interest is also deduced. 展开更多
关键词 axi-symmetry incompressible porous medium pore pressure Laplace transform Hankel transform concentrated source and source over circular region
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