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授業科目名
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担当教員
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乱流輸送工学特論
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角田 博之／山本 義暢
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| PTV702 | 2 | (未登録) | 1 | 後期 | 金 | I | ||||||||||||
| ［概要と目標］ | ||||||||||||||||||
| [Turbulent Transport Engineering] Many of practical flows appearing in the field of mechanical engineering are turbulent of high Reynolds numbers. Turbulent flow is known to have remarkably effective transport ability in comparison with laminar flow. In order to understand physical features of the turbulent flow, students will study the fluid-mechanical difference between laminar and turbulent flows, flow instability problems related with the turbulence transition and the statistical properties of turbulence. Then, the fundamental ideas how the turbulent flow is statistically described are discussed in the case of isotropic turbulence for which theoretical approaches have been completed as being most elementary and simplest turbulent flow. These statistical techniques for the isotropic turbulence can be applied to the analysis of more practical anisotropic turbulent shear flows such as pipe flow, boundary-layer flow or free shear flows. By investigating the momentum and thermal transport equations, students will learn experimental and numerical analysis methods for these flows. 機械工学で問題となる多くの実用上の流れは，レイノルズ数の高い乱流として現れる．乱流は層流に比べて著しく大きな輸送特性をもつことが知られている．この乱流の物理的な特質を理解するために，まず，層流と乱流の流体工学的な違いや乱流への遷移に関する安定性の問題，そして乱流の統計的な特性について学ぶ．次いで，理論的扱いが完成され，最も基本的且つ単純な乱流場である等方性乱流を対象として，乱流を統計的に扱うための基礎概念を学ぶ．等方性乱流理論で学んだ統計的解析手法を発展させ，より実用的な非等方の乱流せん断流の解析に応用する．そして，管内流，境界層流，自由せん断流などの各種の実際的な流れを対象として，運動量や熱の輸送方程式の性質を調べ，数値解析法や計測法までを含めてそれらの扱いを修得する． |
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In the design and the development of various machines or apparatuses, there are many practical problems related with fluid engineering. This course aims to educate engineers who can manage these problems and moreover who have an ability to apply their knowledge to the creation of new technology. For this objective, students are expected to complete the following goals: 1. to understand the fundamental idea of turbulence 2. to understand the statistical methods for analyzing turbulent flows and to apply them to practical flows 3. to discuss turbulent flows based on the governing equations 各種機械・機器の設計や開発において流体工学が関わる問題は多い．本講義では，これらの問題に対応でき，さらに新技術の創出に向けての応用力を備えた技術者養成を目指して，以下の到達目標を設ける． １．乱流の基礎的概念を理解していること． ２．乱流の統計手法を理解し，実際の流れに応用できること． ３．乱流の基礎式に基づき，流れの説明ができること． |
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| ［必要知識・準備］ | ||||||||||||||||||
| Overall knowledge on fluid engineering and fluid dynamics studied in the under-graduate and graduate courses, fundamental and applied knowledge on calculus, fundamental knowledge on vector calculus 学部及び大学院前期で学ぶ流体工学ならびに流体力学に関する知識全般，微分積分学の基礎・応用知識，ベクトル解析の基礎知識 |
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| (未登録) | ||||||||||||||||||
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| ［講義項目］ | ||||||||||||||||||
| (1) Introduction (2) Laminar and turbulent flows #1 (3) Laminar and turbulent flows #2 (4) Flux and turbulent transport (5) Isotropic turbulence #1 (6) Isotropic turbulence #2 (7) Reynolds equations (8) Turbulent shear flows (9) Turbulent flow in pipe (10) Boundary layer (11) Free shear flows (12) Several turbulence models and DNS (13) Measurement techniques of turbulent flows #1 (14) Measurement techniques of turbulent flows #2 (15) Summary (1) 序論 (2) 層流と乱流－その１ (3) 層流と乱流ーその２ (4) 流束と乱流輸送 (5) 等方性乱流－その１ (6) 等方性乱流ーその２ (7) レイノルズ方程式 (8) 乱流剪断流一般 (9) 管内乱流 (10) 境界層流 (11) 自由剪断流 (12) 各種の乱流モデルとＤＮＳ (13) 乱流の計測法ーその１ (14) 乱流の計測法ーその２ (15) 総括評価とまとめ |
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| ［前年度授業に対する改善要望等への対応］ | ||||||||||||||||||
| アンケート結果確認中 | ||||||||||||||||||