A study on fast post-processing massive data of casting numerical simulation on personal computers

• Main Authors: Chen Tao, Liao Dunming, Pang Shenyong
• Format: Article
• Language: English
• Published: Foundry Journal Agency 2013-09-01
• Series: China Foundry
• Subjects: casting numerical simulation; massive data; fast post-processing
• Online Access: http://www.foundryworld.com/uploadfile/2013101756726821.pdf

When castings become complicated and the demands for precision of numerical simulation become higher, the numerical data of casting numerical simulation become more massive. On a general personal computer, these massive numerical data may probably exceed the capacity of available memory, resulting in failure of rendering. Based on the out-of-core technique, this paper proposes a method to effectively utilize external storage and reduce memory usage dramatically, so as to solve the problem of insufficient memory for massive data rendering on general personal computers. Based on this method, a new post-processor is developed. It is capable to illustrate filling and solidification processes of casting, as well as thermal stess. The new post-processor also provides fast interaction to simulation results. Theoretical analysis as well as several practical examples prove that the memory usage and loading time of the post-processor are independent of the size of the relevant files, but the proportion of the number of cells on surface. Meanwhile, the speed of rendering and fetching of value from the mouse is appreciable, and the demands of real-time and interaction are satisfied.