A cut-cell method for adaptive high-order discretizations of conjugate heat transfer problems
Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2014.
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | eng |
| Published: |
Massachusetts Institute of Technology
2014
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/1721.1/90783 |
| _version_ | 1826201307638136832 |
|---|---|
| author | Ojeda, Steven Matthew |
| author2 | David Darmofal. |
| author_facet | David Darmofal. Ojeda, Steven Matthew |
| author_sort | Ojeda, Steven Matthew |
| collection | MIT |
| description | Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2014. |
| first_indexed | 2024-09-23T11:49:31Z |
| format | Thesis |
| id | mit-1721.1/90783 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T11:49:31Z |
| publishDate | 2014 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/907832019-04-11T11:06:53Z A cut-cell method for adaptive high-order discretizations of conjugate heat transfer problems Ojeda, Steven Matthew David Darmofal. Massachusetts Institute of Technology. Department of Aeronautics and Astronautics. Massachusetts Institute of Technology. Department of Aeronautics and Astronautics. Aeronautics and Astronautics. Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2014. Cataloged from PDF version of thesis. Includes bibliographical references (pages 143-151). Heat transfer between a conductive solid and an adjacent convective fluid is prevalent in many aerospace systems. The ability to achieve accurate predictions of the coupled heat interaction is critical in advancing thermodynamic designs. Despite their growing use, coupled fluid-solid analyses known as conjugate heat transfer (CHT) are hindered by the lack of automation and robustness. The mesh generation process is still highly dependent on user experience and resources, requiring time-consuming involvement in the analysis cycle. This thesis presents work toward developing a robust PDE solution framework for CHT simulations that autonomously provides reliable output predictions. More specifically, the framework is comprised of the following components: a simplex cut-cell technique that generates multi-regioned meshes decoupled from the design geometry, a high-order discontinuous Galerkin (DG) discretization, and an anisotropic output-based adaptation method that autonomously adapts the mesh to minimize the error in an output of interest. An existing cut-cell technique is first extended to generate fully-embedded meshes with multiple sub-domains. Then, a coupled framework that combines separate disciplines is developed, while ensuring compatibility between the cut-cell and mesh adaptation algorithms. Next, the framework is applied to high-order discretizations of the heat, Navier-Stokes, and Reynolds-Averaged Navier-Stokes (RANS) equations to analyze the heat flux interaction. Through a series of numerical studies, high-order accurate outputs solved on autonomously controlled cut-cell meshes are demonstrated. Finally, the conjugate solutions are analyzed to gain physical insight to the coupled interaction. by Steven Matthew Ojeda. S.M. 2014-10-08T15:28:53Z 2014-10-08T15:28:53Z 2014 2014 Thesis http://hdl.handle.net/1721.1/90783 891568991 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 151 pages application/pdf Massachusetts Institute of Technology |
| spellingShingle | Aeronautics and Astronautics. Ojeda, Steven Matthew A cut-cell method for adaptive high-order discretizations of conjugate heat transfer problems |
| title | A cut-cell method for adaptive high-order discretizations of conjugate heat transfer problems |
| title_full | A cut-cell method for adaptive high-order discretizations of conjugate heat transfer problems |
| title_fullStr | A cut-cell method for adaptive high-order discretizations of conjugate heat transfer problems |
| title_full_unstemmed | A cut-cell method for adaptive high-order discretizations of conjugate heat transfer problems |
| title_short | A cut-cell method for adaptive high-order discretizations of conjugate heat transfer problems |
| title_sort | cut cell method for adaptive high order discretizations of conjugate heat transfer problems |
| topic | Aeronautics and Astronautics. |
| url | http://hdl.handle.net/1721.1/90783 |
| work_keys_str_mv | AT ojedastevenmatthew acutcellmethodforadaptivehighorderdiscretizationsofconjugateheattransferproblems AT ojedastevenmatthew cutcellmethodforadaptivehighorderdiscretizationsofconjugateheattransferproblems |