GEOMIT is a CAD/MCNP conversion interface code. It is developed to automatically generate Monte Carlo geometrical data from CAD data due to the difference in the representation scheme. GEOMIT is capable of importing different CAD format as well as exporting different CAD format. GEOMIT has a capability to produce solid cells as well as void cells without using complement operator. While loading the CAD shapes (Solids), each shape is assigning material number and density according to its color on the original CAD data. Shape fixing process has been applied to cure the errors in the CAD data. Vertices location correctness is evaluated first, and then a removal of free edges and removal of small faces processes. Binary Space Portioning (BSP) tree technique is used to automatically split complicated solids into simpler cells to avoid excessive complicated cells for MCNP to run faster. MCNP surfaces are subjected to an automatic reduction before creating the model.
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2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference
July 30–August 3, 2012
Anaheim, California, USA
Conference Sponsors:
- Nuclear Engineering Division
- Power Division
ISBN:
978-0-7918-4495-3
PROCEEDINGS PAPER
Development of CAD-MCNP Interface Program “GEOMIT”
Hesham Nasif,
Hesham Nasif
MHI Nuclear Engineering Co. Ltd., Tokyo, Japan
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Takashi Sato,
Takashi Sato
MHI Nuclear Engineering Co. Ltd., Tokyo, Japan
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Hidetsugu Morota,
Hidetsugu Morota
MHI Nuclear Engineering Co. Ltd., Tokyo, Japan
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Akihiro Masui,
Akihiro Masui
MHI Nuclear Engineering Co. Ltd., Tokyo, Japan
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Hideo Kitagawa
Hideo Kitagawa
MHI Nuclear Engineering Co. Ltd., Tokyo, Japan
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Hesham Nasif
MHI Nuclear Engineering Co. Ltd., Tokyo, Japan
Takashi Sato
MHI Nuclear Engineering Co. Ltd., Tokyo, Japan
Hidetsugu Morota
MHI Nuclear Engineering Co. Ltd., Tokyo, Japan
Akihiro Masui
MHI Nuclear Engineering Co. Ltd., Tokyo, Japan
Hideo Kitagawa
MHI Nuclear Engineering Co. Ltd., Tokyo, Japan
Paper No:
ICONE20-POWER2012-54948, pp. 781-786; 6 pages
Published Online:
October 30, 2013
Citation
Nasif, H, Sato, T, Morota, H, Masui, A, & Kitagawa, H. "Development of CAD-MCNP Interface Program “GEOMIT”." Proceedings of the 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference. Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle, and Balance of Plant; Component Reliability and Materials Issues; Steam Generator Technology Applications and Innovations; Advanced Reactors and Near-Term Deployment; Reactor Physics, Neutronics, and Transport Theory; Nuclear Education, Human Resources, and Public Acceptance. Anaheim, California, USA. July 30–August 3, 2012. pp. 781-786. ASME. https://doi.org/10.1115/ICONE20-POWER2012-54948
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