@article{cadf8afcfcb543c08cb2f8c54ff6498d,
title = "Mesh refinement influence and cardiac-cycle flow periodicity in aorta flow analysis with isogeometric discretization",
abstract = "We present detailed studies on mesh refinement influence and cardiac-cycle flow periodicity in aorta flow analysis with isogeometric discretization. Both factors play a key role in the reliability and practical value of aorta flow analysis. The core computational method is the space–time Variational Multiscale (ST-VMS) method. The other key method is the ST Isogeometric Analysis (ST-IGA). The ST framework, in a general context, provides higher-order accuracy. The VMS feature of the ST-VMS addresses the computational challenges associated with the multiscale nature of the unsteady flow in the aorta. The ST-IGA provides smoother representation of the aorta and increased accuracy in the flow solution. We conduct the studies for a patient-specific aorta geometry. We determine the level of mesh refinement needed and assess the nature of the flow periodicity reached.",
keywords = "Aorta, Flow periodicity, Higher-order functions, IGA, Isogeometric Analysis, Mesh refinement, ST-VMS, Space–Time Variational Multiscale method",
author = "Kenji Takizawa and Tezduyar, {Tayfun E.} and Hiroaki Uchikawa and Takuya Terahara and Takafumi Sasaki and Ayaka Yoshida",
note = "Funding Information: This work was supported in part by JST-CREST JPMJCR15D1; Grant-in-Aid for Challenging Exploratory Research 16K13779 from Japan Society for the Promotion of Science ; Grant-in-Aid for Scientific Research (S) 26220002 from the Ministry of Education, Culture, Sports, Science and Technology of Japan ( MEXT ); Grant-in-Aid for Scientific Research (A) 18H04100 from Japan Society for the Promotion of Science; and Rice–Waseda research agreement. This work was also supported in part by Grant-in-Aid for JSPS Research Fellow 17J11096 (fourth author) and 18J14680 (fifth author). The mathematical model and computational method parts of the work were also supported (second author) in part by ARO Grant W911NF-17-1-0046 . Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",
year = "2019",
month = jan,
day = "30",
doi = "10.1016/j.compfluid.2018.05.025",
language = "English",
volume = "179",
pages = "790--798",
journal = "Computers and Fluids",
issn = "0045-7930",
publisher = "Elsevier Limited",
}