Improvements to the Cheng-Todreas wire-wrapped rod bundle friction factor correlation in response to pin number and in the transition flow region
Thesis: S.B., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2016.
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | eng |
| Published: |
Massachusetts Institute of Technology
2017
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/1721.1/106697 |
| _version_ | 1811085026813542400 |
|---|---|
| author | Kindfuller, Vincent John |
| author2 | Neil Todreas. |
| author_facet | Neil Todreas. Kindfuller, Vincent John |
| author_sort | Kindfuller, Vincent John |
| collection | MIT |
| description | Thesis: S.B., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2016. |
| first_indexed | 2024-09-23T13:01:46Z |
| format | Thesis |
| id | mit-1721.1/106697 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T13:01:46Z |
| publishDate | 2017 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/1066972019-04-11T08:11:16Z Improvements to the Cheng-Todreas wire-wrapped rod bundle friction factor correlation in response to pin number and in the transition flow region Cheng-Todreas Detailed Pressure Drop Correlation CTD Kindfuller, Vincent John Neil Todreas. Massachusetts Institute of Technology. Department of Nuclear Science and Engineering. Massachusetts Institute of Technology. Department of Nuclear Science and Engineering. Nuclear Science and Engineering. Thesis: S.B., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2016. This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections. Cataloged from student-submitted PDF version of thesis. Includes bibliographical references (pages 51-52). The Cheng-Todreas Detailed (CTD) Pressure Drop Correlation (1986) is the most accurate correlation for measuring the pressure drop of sodium coolant through a Sodium-Cooled Fast Reactor (SFR). Although CTD is the most accurate correlation, there is room for improvement with new data and modern ways to visualize data and check the accuracy of changes easily. This thesis attempts to offer a method for altering the CTD correlation to better account for changing pin numbers in SFR assemblies, and a better fit for the correlation to the data in the transition flow region between turbulent and laminar flow. Although CTD is more accurate than other correlations, it shows an inverse response to changing pin number in some geometries of bundle assemblies. In this thesis, a method is laid out to attempt to correct for that inverse response. Although no successful conclusion was reached, the thesis also offers a method for future attempts at improvement. In addition, a set of Matlab codes are offered that allow changes to be easily attempted and checked for validity. In addition, examining the data points of bundles in the transition flow regime shows possibilities for improving the accuracy of the correlation in that flow region. Two changes are implemented in this thesis: a change to the equation for the boundary between laminar and transition flow, and a change to the transition region friction factor equation. Both changes, when implemented, offer slight improvements to the overall accuracy and precision of the Cheng-Todreas Pressure Drop Correlation.. by Vincent John Kindfuller. S.B. 2017-01-30T18:51:06Z 2017-01-30T18:51:06Z 2016 2016 Thesis http://hdl.handle.net/1721.1/106697 969899656 eng MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission. http://dspace.mit.edu/handle/1721.1/7582 102 pages application/pdf Massachusetts Institute of Technology |
| spellingShingle | Nuclear Science and Engineering. Kindfuller, Vincent John Improvements to the Cheng-Todreas wire-wrapped rod bundle friction factor correlation in response to pin number and in the transition flow region |
| title | Improvements to the Cheng-Todreas wire-wrapped rod bundle friction factor correlation in response to pin number and in the transition flow region |
| title_full | Improvements to the Cheng-Todreas wire-wrapped rod bundle friction factor correlation in response to pin number and in the transition flow region |
| title_fullStr | Improvements to the Cheng-Todreas wire-wrapped rod bundle friction factor correlation in response to pin number and in the transition flow region |
| title_full_unstemmed | Improvements to the Cheng-Todreas wire-wrapped rod bundle friction factor correlation in response to pin number and in the transition flow region |
| title_short | Improvements to the Cheng-Todreas wire-wrapped rod bundle friction factor correlation in response to pin number and in the transition flow region |
| title_sort | improvements to the cheng todreas wire wrapped rod bundle friction factor correlation in response to pin number and in the transition flow region |
| topic | Nuclear Science and Engineering. |
| url | http://hdl.handle.net/1721.1/106697 |
| work_keys_str_mv | AT kindfullervincentjohn improvementstothechengtodreaswirewrappedrodbundlefrictionfactorcorrelationinresponsetopinnumberandinthetransitionflowregion AT kindfullervincentjohn chengtodreasdetailedpressuredropcorrelation AT kindfullervincentjohn ctd |