Study of Next-Generation CFD toward Petaflops Computers

针对 Petaflops 计算机的下一代 CFD 研究

• 批准号: 21226018
• 负责人: NAKAHASHI Kazuhiro
• 金额: $ 137.11万
• 依托单位: Japan Aerospace Exploration Agency (2012-2013)Tohoku University (2009-2011)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (S)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009-05-11 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21226018/
• 关键词: 流体工学; 航空宇宙工学; シミュレーション工学; 計算機システム; 流体騒音; 自動車工学; 超臨界流体; 数値流体力学; 航空工学; 空力最適化; 並列化; 流体

This study was conducted aimed at solving the problems of the current CFD in the use of the aerodynamic designs of aircrafts, such as the physical model dependence of the computational results and the increase of the work load for treating complex geometries. The Building-Cube Method was proposed bearing the further performance improvement of computers in mind, and the various algorithm studies for practical use were conducted.One of the achievements was demonstrated by the world-leading large scale flow computation around a car using the K-computer. It is significant that the proposed CFD approach can treat extremely complicated and incomplete CAD data directly for the simulation. This can be a game-changing technology for aerodynamic design process of aircrafts and automobiles.

针对目前CFD在飞行器气动设计中存在的计算结果对物理模型的依赖性以及处理复杂外形时工作量增加等问题，进行了研究。考虑到计算机性能的进一步提高，提出了Building-Cube方法，并进行了各种实用算法的研究，其中一项成果是利用K计算机进行了世界领先的大规模汽车绕流计算。该方法可以直接处理极其复杂和不完整的CAD数据进行仿真，这一点具有重要意义。这可能是飞机和汽车空气动力学设计过程中的一项改变游戏规则的技术。

项目成果

Multi-Objective Design Optimization for a Steam Turbine Stator Blade Using LES and GA

• DOI: 10.1299/jcst.5.134
• 发表时间: 2011
• 期刊: Journal of Computational Science and Technology
• 作者: K. Shimoyama;Shu Yoshimizu;Shinkyu Jeong;S. Obayashi;Y. Yokono

3DSFS+BCを用いた連続水熱合成反応器内流れの数値解析

使用 3DSFS+BC 对连续水热合成反应器内的流动进行数值分析

• 发表时间: 2013
• 作者: 牧野幸太郎;古澤卓;山本悟
• 通讯作者: 山本悟

Cartesian-based CFD Solver for Low-Reynolds Number Airfoils

基于笛卡尔的低雷诺数翼型件 CFD 求解器

• 发表时间: 2013
• 作者: Daisuke Sasaki;Yuya Kojima;Tatsuya Kuroda;Takeshi Akasaka;Masato Okamoto;Koji Shimoyama;Shigeru Obayashi
• 通讯作者: Shigeru Obayashi

Use of the Immersed Boundary Method within the Building Cube Method and its Application to Real Vehicle CAD Data

建筑立方体法中浸入边界法的使用及其在实车 CAD 数据中的应用

• 发表时间: 2013
• 作者: Keiji Onishi;Shigeru Obayashi;Kazuhiro Nakahashi;Makoto Tsubokura
• 通讯作者: Makoto Tsubokura

Numerical Investigation of Exhaust Diffuser Performances in a Low Pressure Turbine Casings

低压涡轮机壳排气扩压器性能的数值研究

• 发表时间: 2011
• 期刊: Proc.ASME Turbo Expo 2011
• 作者: Tadashi Tanuma;Yasuhiro Sasao;Satoru Yamamoto;Shinji Takada;他3名
• 通讯作者: 他3名