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翅の弾性変形の影響による推進力の予測に関する研究
https://doi.org/10.18997/00003738
https://doi.org/10.18997/00003738ca96167e-2afb-41fb-b2e4-eced25e701ad
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
D-168_jou_k_269.pdf (5.4 MB)
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| Item type | 学位論文 = Thesis or Dissertation(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2013-10-31 | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
| 資源タイプ | doctoral thesis | |||||||
| タイトル | ||||||||
| タイトル | Study on Prediction of Thrust Force on Wing with Elastic Deformation Effects | |||||||
| 言語 | en | |||||||
| タイトル | ||||||||
| タイトル | 翅の弾性変形の影響による推進力の予測に関する研究 | |||||||
| 言語 | ja | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 著者 |
Junchangpood, Aphaiwong
× Junchangpood, Aphaiwong
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | In this thesis, the simple predicting method of thrust-production on the wing’s elastic deformation effects has been proposed, which is named DRR’s principle. And then, the development of DRR’s principle for the flexible wing is described. Particularly, emphasis has been based on the explanations the reasons of why DRR has been different in phase and amplitude with thrust coefficients. The thesis consists of five chapters covering the background history, problem formulation, solution approach and discussion of the results and conclusions. CHAPTER I deals with a detailed background history of the deformation effects to aerodynamic forces, problem associated with elastic deformation, its importance in practical applications in flying robot. And also, the research purposes are specified. CAPTER II describes method of solution, development of a numerical algorithm, grid system, finite volume and finite element discretization of the governing equations, and the calculation of the physical amounts in fluid dynamic analysis. CHAPERT III contends with the mathematical model of evaluating the deformation effects. Also, the previous works are described. The results of the effects of the vortex structures in the wake behind both the flapping rigid and elastic wings, and the varying the wing’s flexibilities due to some ribs attached with the main spare of the wing structures is investigated. In addition, the characteristic effects of elastic deformation using FEM simulation are examined. CHAPTER IV explains the relationships between DRR variable and thrust coefficient. And also, the vortex flow structure results obtained by FSI simulation are illustrated. In particular, the newly developed DRR’s principle for the prediction of a dynamic thrust is explained and their mathematical results are discussed. CHAPTER V in this final chapter, a conclusion is drawn regarding the robustness of the newly developed mathematic model in predicting simply the dynamic thrust based on the elastic deformation effects. Especially, to verify DRR’s principle, the reasons of their amplitude and phase difference have been found, as these are follows: First, for amplitude difference, due to highest DRR has been proportional to both the maximum trailing-edge deformation and deformational area, which at this point occurs zero deformational velocity (V_<deform> =0). On the other hand, the maximum dynamic thrust has been dependant on both high amplitude of dynamic pressure difference and the trailing projection area. Otherwise, both DRR and C_T have coupled only with the maximum trailing deformation. Second, for phase difference, due to the effects of constructive interference between pressure difference, ⊿p(t), and projection area, A_<TE,deform>(t), with the same frequency but different amplitude have occurred, thus the resulting wave of thrust force has been equal to the sum of these two waves. However, the resulting wave of DRR has not only been affected by local ⊿p(t), but also 3-D deformation of wing. Especially, it can also be explained by that K_<DRR> and C_<DRR>, where KDRR indicates the potential energy caused by the surface pressure and total wing’s deformation and the leading-edge deformation is indicated by C_<DRR>. As results, for newly model of thrust coefficient based on DRR’s principle, an error of between 8% and 18 % have occurred for high thrust and small thrust force region, respectively. Finally, suggestion for future work has been highlighted. | |||||||
| 目次 | ||||||||
| 内容記述タイプ | TableOfContents | |||||||
| 内容記述 | 1. CHAPTER I Introduction||2. CHAPTER II Theory and Methodology||3. CHAPTER III Deformational Displacement||4. CHAPTER IV Modification of DRR||5. CHAPTER V Conclusion | |||||||
| 備考 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 九州工業大学博士学位論文 学位記番号:情工博甲第269号 学位授与年月日:平成24年9月30日 | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Flapping wing | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Elastic deformation | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Thrust force | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Fluid Structure Interaction | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | DRR’s principle | |||||||
| アドバイザー | ||||||||
| 田中, 和博 | ||||||||
| 学位授与番号 | ||||||||
| 学位授与番号 | 甲第269号 | |||||||
| 学位名 | ||||||||
| 学位名 | 博士（情報工学） | |||||||
| 学位授与年月日 | ||||||||
| 学位授与年月日 | 2012-09-30 | |||||||
| 学位授与機関 | ||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||
| 学位授与機関識別子 | 17104 | |||||||
| 学位授与機関名 | 九州工業大学 | |||||||
| 学位授与年度 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 平成24年度 | |||||||
| 出版タイプ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| ID登録 | ||||||||
| ID登録 | 10.18997/00003738 | |||||||
| ID登録タイプ | JaLC | |||||||
