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Experimental Investigation of Homogeneous Anisotropic Turbulence
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| 자료유형 | 학위논문 |
|---|---|
| 서명/저자사항 | Experimental Investigation of Homogeneous Anisotropic Turbulence. |
| 개인저자 | Carter, Douglas William. |
| 단체저자명 | University of Minnesota. Aerospace Engineering and Mechanics. |
| 발행사항 | [S.l.]: University of Minnesota., 2019. |
| 발행사항 | Ann Arbor: ProQuest Dissertations & Theses, 2019. |
| 형태사항 | 140 p. |
| 기본자료 저록 | Dissertations Abstracts International 81-02B. Dissertation Abstract International |
| ISBN | 9781085764124 |
| 학위논문주기 | Thesis (Ph.D.)--University of Minnesota, 2019. |
| 일반주기 |
Source: Dissertations Abstracts International, Volume: 81-02, Section: B.
Advisor: Coletti, Filippo. |
| 이용제한사항 | This item must not be sold to any third party vendors. |
| 요약 | Motivated by the need to substantiate the existing literature on homogeneous turbulence with experimental data, a novel zero-mean homogeneous turbulence chamber is presented. Despite the anisotropy of the large scale velocity fluctuations, the experimental apparatus is found to well approximate homogeneous, shear-less turbulence over scales larger than the integral lengths of the flow for four separate cases at Reynolds numbers (based on the Taylor microscale) ranging between 154 and 412. This enables a detailed investigation of the turbulence statistics as obtained by 2D particle image velocimetry, which confirms the existence of inertial scaling ranges in both the second-order structure functions and energy spectra. It is found that the anisotropy of the flow persists down to the smallest scales, though its influence decreases with decreasing scale. The coherent structures, identified using a percolation analysis, are however isotropic in their geometry and generally collapse across cases using the Taylor microscale as a normalization length scale. Two types of scale interaction analyses are applied to the turbulent fields and indicate that there exists substantial coupling between scales small and large |
| 일반주제명 | Aerospace engineering. |
| 언어 | 영어 |
| 바로가기 | 
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