Radiation absorption by inertial particles in a turbulent square duct flow
Abstract/Contents
- Abstract
- Particle-based solar receivers pose an interesting engineering challenge because of the coupled interactions between particle motion in a turbulent flow, radiation transmission and absorption through a random media, and convective heat transfer between the gas and solid phases. In a particle solar receiver, the absorbing wall of a conventional receiver is replaced with a transparent window and small particles dispersed within the working fluid absorb the radiation. This can increase the surface area available for heat transfer to the fluid, reduce radiation losses, and improve system efficiency. However, nearly all studies on particle solar receivers ignore the effect of particle clustering on radiation absorption and the gas temperature rise. In this work, the radiation absorption by preferentially concentrated particles in a turbulent square duct flow was studied experimentally. The turbulent flow of air was laden with small Nickel particles and exposed to monochromatic, infrared radiation over a streamwise length of several duct widths. Measurements were made of the particle phase statistics, mean and fluctuating radiation transmission, and mean and fluctuating gas temperature rise. Simplified heat transfer and radiation transmission models were also developed to understand the basic physical principles and to provide comparisons to the experimental results.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2018 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Banko, Andrew James |
|---|---|
| Associated with | Stanford University, Department of Mechanical Engineering. |
| Primary advisor | Eaton, John K |
| Thesis advisor | Eaton, John K |
| Thesis advisor | Elkins, Christopher A |
| Thesis advisor | Iaccarino, Gianluca |
| Advisor | Elkins, Christopher A |
| Advisor | Iaccarino, Gianluca |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Andrew James Banko. |
|---|---|
| Note | Submitted to the Department of Mechanical Engineering. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2018. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2018 by Andrew James Banko
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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