Characterization of Premixed Flames Using High Energy X-Ray Absorption
Abstract/Contents
- Abstract
- Experimental and numerical studies have shown that porous media burners (PMBs) can reduce many of the adverse effects of combustion. However, studying the porous microstructure of PMBs and the flames that stabilize within can be a difficult task. Recent advances in X-ray computed tomography (XCT) offer a non-invasive, high resolution technique that enables the investigation of three-dimensional (3D) fields such as temperature and density, which can be used to quantify the complex processes that occur within PMBs. The objective of this thesis work is to calibrate X-ray diagnostics and quantify uncertainties using well-characterized, stable flames, where temperature, gas concentrations, and flow velocities can be predictably controlled. A laboratory burner was designed and operated with a premixed methane/air/krypton flame. Flame characteristics for different setups and a range of equivalence ratios were studied using a tabletop X-ray system in the Stanford Medical School. The results obtained in this study demonstrate the usefulness of XCT in obtaining both quantitative and qualitative information about combustion experiments. Although this study focuses on simple systems that are optically accessible, the diagnostics developed can also be applied to other systems of interest that are optically inaccessible. This work furthers the recent development of XCT as a novel combustion diagnostic tool, capable of yielding non-intrusive 3D datasets in optically inaccessible environments.
Description
| Type of resource | text |
|---|---|
| Date created | May 15, 2018 |
Creators/Contributors
| Author | Muhunthan, Priyanka |
|---|---|
| Advisor | Ihme, Matthias |
| Degree granting institution | Stanford University, Department of Mechanical Engineering |
Subjects
| Subject | X-ray computed tomography |
|---|---|
| Subject | XCT |
| Subject | Pourous media burners |
| Subject | PMBs |
| Subject | combustion |
| Genre | Thesis |
Bibliographic information
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- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
Preferred citation
- Preferred Citation
- Muhunthan, Priyanka. (2018). Characterization of Premixed Flames Using High Energy X-Ray Absorption. Stanford Digital Repository. Available at: https://purl.stanford.edu/dj682sg1417
Collection
Undergraduate Theses, School of Engineering
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- pmuhun@stanford.edu
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