NDLI: Sub-grid Technique for Numerical Simulation of Sound Wave Propagation Combining Constrained Interpolation Profile Schemes CIP

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Sub-grid Technique for Numerical Simulation of Sound Wave Propagation Combining Constrained Interpolation Profile Schemes CIP

Content Provider	Semantic Scholar
Author	Ara, Yuta Okubo, Kan Tagawa, Norio Tsuchiya, Takao Ishizuka, Takashi
Copyright Year	2012
Abstract	To date, numerical analysis for sound wave propagation in time domain has been investigated widely as a result of computer development. Now, the development of accurate numerical schemes is an important technical issue[1]. The constrained interpolation profile (CIP) method, a novel low-dispersive numerical scheme is a type of method of characteristics (MOC) [2-4]. However, new grid systems are required for CIP simulations of complicated heterogeneous media or large-scale simulations of wave propagation. To overcome this problem, sub-grid techniques[5] are proposed for other simulation methods of wave propagation. In the previous study, we have introduced this technique for the type-C and type-M CIP methods, and evaluated the setting of the boundary interface between the course grid and sub grid[6]. The type-M CIP method is a simple technique with smaller memory use and less calculation time required than the type-C CIP method in exchange for accuracy. Therefore, from the point of reduction in the calculation cost, a sub-grid technique for the type-M CIP method is also important. Subgrids are defined as those smaller than the surrounding grids: we can use suitable multisize grids in an analysis domain according to a sub-grid technique for the CIP-MOC simulation of sound wave propagation. In this study, we improved on the sub-grid techniques[6] for CIP analysis using generalized CIP (GCIP) schemes[7] and reported the comparison of accuracy and calculation cost.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.use-jp.org/proceedings/USE12/pdf/1P6-2.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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