Posteriori error determination and grid adaptation for AMR and ALE computational fluid dynamics

Conference · Tue Jan 01 00:00:00 EST 2002

DOI:https://doi.org/10.1007/978-3-642-59334-5_68· OSTI ID:976232

Lapenta, G M ^[1]

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1. Giovanni M.

We discuss grid adaptation for application to AMR and ALE codes. Two new contributions are presented. First, a new method to locate the regions where the truncation error is being created due to an insufficient accuracy: the operator recovery error origin (OREO) detector. The OREO detector is automatic, reliable, easy to implement and extremely inexpensive. Second, a new grid motion technique is presented for application to ALE codes. The method is based on the Brackbill-Saltzman approach but it is directly linked to the OREO detector and moves the grid automatically to minimize the error.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• OSTI ID: 976232
• Report Number(s): LA-UR-02-4512; TRN: US201009%%399
• Resource Relation: Conference: Submitted to: Computational Fluid Dynamics, Sydney, 15-19 July 2002
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICAL METHODS AND COMPUTING
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ACCURACY
COMPUTERIZED SIMULATION
FLUID MECHANICS
COORDINATES
ERRORS
MITIGATION