基于CAD的WGOTHIC几何建模方法研究和软件研发
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摘要
在使用WGOTHIC程序进行反应堆安全壳压力响应分析时,需要基于其输入格式建立几何模型。目前建立过程通常是依据工程设计的二维图纸,通过人为空间想象和人工数学计算,手动进行建模。这种建模方法一方面非常繁琐、耗时耗力,另一方面存在大量保守的近似与简化。研究提出了一种基于计算机辅助设计(CAD)的WGOTHIC几何建模方法。该方法利用现有用于工程设计的三维CAD几何模型,采用计算机图形学原理和实体几何造型技术,建立工程CAD几何模型到WGOTHIC几何模型的转换方法,自动构造WGOTHIC计算所需几何模型。然后在此基础上研发了辅助建模软件,并采用CAP1000模型对方法和软件进行了验证。结果表明,该方法能够有效提高WGOTHIC几何建模的效率。
It is necessary to model the geometry of WGOTHIC when using it to analyze the pressure response of the reactor containment.The present manually modeling method is based on the two-dimensional engineering design drawings,through the human space imagination and manual mathematical operations.This method is tedious,time-consuming and adopts some conservative approximation and simplification.A new modeling method for the WGOTHIC geometry based on Computer Aided Design(CAD)technology is proposed in this paper.The present three-dimensional CAD geometry model for engineering construction is utilized and a conversion method between engineering CAD geometry and WGOTHIC geometry is developed.This method is implemented as auxiliary modeling software.The verification results with CAP1000 model show that the method could improve the efficiency of WGOTHIC geometry modeling.
It is necessary to model the geometry of WGOTHIC when using it to analyze the pressure response of the reactor containment.The present manually modeling method is based on the two-dimensional engineering design drawings,through the human space imagination and manual mathematical operations.This method is tedious,time-consuming and adopts some conservative approximation and simplification.A new modeling method for the WGOTHIC geometry based on Computer Aided Design(CAD)technology is proposed in this paper.The present three-dimensional CAD geometry model for engineering construction is utilized and a conversion method between engineering CAD geometry and WGOTHIC geometry is developed.This method is implemented as auxiliary modeling software.The verification results with CAP1000 model show that the method could improve the efficiency of WGOTHIC geometry modeling.
引文
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[2]韦胜杰.WGOTHIC安全壳评价模型输入数据[R].CAP-SAR06-GSC-0207,1版,上海核工程研究设计院,2013,3.WEI Shengjie.Input data of Containment Evaluation model of WGOTHIC code[R].CAP-SAR06-GSC-0207,Rev.1,Shanghai Nuclear Engineering Research&Design Institute,2013,3.
[3]Wilson P P P,Feder R,Fischer U,et al.State-of-theart 3-D radiation transport methods for fusion energy systems[J].Fusion Engineering and Design,2008,83(7-9):824-833.
[4]Tsige-Tamirat H,Fischer U.CAD based geometry generation for Monte Carlo particle transport codes[J].Trans.Am.Nucl.Soc.,2004,91:179-80.
[5]Noha Shaaban,Wael El Gammal,Hesham Nasif,et al.Automatic modelling of complex geometries for MCNP simulation using GEOMIT code[J].International Journal of Engineering Systems Modelling and Simulation,2015,7(3):158-165.
[6]Wu Yican.CAD-based interface programs for fusion neutron transport simulation[J].Fusion Engineering and Design,2009,84(7-11):1987-1992.
[7]吴宜灿,李莹,卢磊,等.蒙特卡罗粒子输运计算自动建模程序系统的研究与发展[J].核科学与工程,2006(1):20-27.WU Yican,LI Ying,LU Lei,et al.Research and development of the automatic modeling system for Monte Carlo particle transport simulation[J].Chinese Journal of Nuclear Science and Engineering,2006(1):20-27.
[8]王国忠,党同强,熊健,等.MCAM4.8在ITER建筑大厅中子学建模中的应用[J].核科学与工程,2011(4):351-355.WANG Guozhong,DANG Tongqiang,XIONG Jian,et al.Application of MCAM4.8in Creating Neutronics Model for ITER Building[J].Chinese Journal of Nuclear Science and Engineering,2011(4):351-355.
[9]王国忠,程梦云,龙鹏程,等.基于相似性评价的辐射输运计算建模方法研究[J].核科学与工程,2015(3):458-463.WANG Guozhong,CHENG Mengyun,LONG Pengcheng,et al.Similarity Estimation Based Improvement of Radiation Transport Simulation Modeling[J].Chinese Journal of Nuclear Science and Engineering,2015(3):458-463.
[10]Null Rosemary.LUCIFER2Calculations for AP1000IMP Data[R].LOCA-SES-AP-IMP-0.04,Rev.0,Westinghouse Electric Company LLC,2012,10.