@inproceedings{oai:jaxa.repo.nii.ac.jp:00004388,
 author = {福島, 裕馬 and 佐々木, 大輔 and 中橋, 和博 and Fukushima, Yuma and Sasaki, Daisuke and Nakahashi, Kazuhiro},
 book = {宇宙航空研究開発機構特別資料: 第43回流体力学講演会: 航空宇宙数値シミュレーション技術シンポジウム2011論文集, JAXA Special Publication: Proceedings of 43rd Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2011},
 month = {Mar},
 note = {第43回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2011 (2011年7月7日-8日. 早稲田大学国際会議場) 東京, 43rd Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2011 (July 7-8,  2011. Waseda University, International Conference Center), Tokyo Japan, Recently, noise of airplane has been lowered due to the improvement of each component. However, regulations of airport noise are just the same getting stringent, and thus the attention is currently focused on noise analyses for the further noise reduction. Among them, this study focuses the acousic analysis using the Linearized Euler Equation (LEE). LEE is often calculated on multi-block structued or unstructued mesh. However, mesh generation around complicated geometries takes time on structured mesh and cost of high order calculation gets larger on unstructured mesh. In this study, a LEE code for aeroacoustic analysis is developed on block structured Cartesian mesh of Building-Cube Method (BCM). BCM has several advantages over structred or unstructured mesh: quick mesh generation for complicated geometries, easy application of high order scheme, high efficiency in calcuation, and easy parallelization of proccess. To make an accurate calculation, the Immersed Boundary Method is implemented for wall boundary, treatment and high order Lagrange interpolation is implemented at the Cube boundary for data exchange. At outer boundary, buffer zone boundary condition is implemented. This code is validated through acoustics scattering problems around cylinders and the Root Mean Square Error (RMSE) and Maximum error of calculations are compared. In results, presented method shows high accuracy even if the objects are complicated triple cylinders and the efectivity was verified., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA0065207016, レポート番号: JAXA-SP-11-015},
 pages = {95--100},
 publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)},
 title = {ブロック構造型直交格子とIB法を用いたLEEコード構築},
 volume = {JAXA-SP-11-015},
 year = {2012}
}