Direct measurement of eddy viscosity and analysis of non-boussinesq effects in wall-bounded turbulent flows
Abstract/Contents
- Abstract
- This work presents studies of momentum mixing by turbulence in a channel flow, a separated boundary layer flow, and a separated boundary layer with sweep using direct numerical simulation (DNS) and the macroscopic forcing method (MFM, Mani and Park, Physical Review Fluids, 2021, p.054607) to quantify the non-Boussinesq effects of momentum mixing from turbulent eddies. The key goal of our investigation is to develop a quantitative understanding of the anisotropy and nonlocality of the eddy viscosity operator in wall-bounded turbulent flows. These studies provide important perspectives on the macroscopic behavior of turbulence in diverse flow setups, and they supply valuable data for enhancing turbulence closure models. Furthermore, they encourage a reevaluation of previous works in turbulence modeling and provide a foundation for enhancing the effectiveness of current RANS models.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2023; ©2023 |
| Publication date | 2023; 2023 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Park, Danah |
|---|---|
| Degree supervisor | Mani, Ali, (Professor of mechanical engineering) |
| Thesis advisor | Mani, Ali, (Professor of mechanical engineering) |
| Thesis advisor | Alonso, Juan José, 1968- |
| Thesis advisor | McKeon, Beverley J, 1974- |
| Degree committee member | Alonso, Juan José, 1968- |
| Degree committee member | McKeon, Beverley J, 1974- |
| Associated with | Stanford University, School of Engineering |
| Associated with | Stanford University, Department of Mechanical Engineering |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Danah Park. |
|---|---|
| Note | Submitted to the Department of Mechanical Engineering. |
| Thesis | Thesis Ph.D. Stanford University 2023. |
| Location | https://purl.stanford.edu/zt378xc9012 |
Access conditions
- Copyright
- © 2023 by Danah Park
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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