Numerical instability study of supercritical water flowing upward in two heated parallel channels

Simple item page
dc.contributor.authorLi, Sujuan
dc.contributor.examiningcommitteeBirouk, Madjid (Mechanical Engineering) Dow, Karen (Civil Engineering)en_US
dc.contributor.supervisorChatoorgoon, Vijay (Mechanical Engineering) Ormiston, Scott (Mechanical Engineering)en_US
dc.date.accessioned2017-01-04T19:50:32Z
dc.date.available2017-01-04T19:50:32Z
dc.date.issued2016en_US
dc.degree.disciplineMechanical Engineeringen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractA three dimensional numerical investigation of supercritical water flowing upward in two heated parallel channels was developed using a RANS model in the Computational Fluid Dynamics (CFD) code ANSYS CFX. The standard k- turbulence model with scalable wall functions was adopted throughout this numerical study. The effects of spatial and temporal grid sizes on flow instability were studied first. Then oscillatory instabilities of nine experimental cases were predicted using the CFX code. For comparison purposes, Chatoorgoon’s 1-D non-linear SPORTS code was also used to determine the instability boundary. These new numerical results were compared with the experimental data and previous numerical results by other investigators. Additionally, the effects of changing the outlet plenum volume, the turbulent Prandtl number, the turbulence inlet conditions, the outlet K factor, the maximum iterations per time step in the transient analysis and the order of the transient scheme on the instability thresholds were examined.en_US
dc.description.noteFebruary 2017en_US
dc.identifier.urihttp://hdl.handle.net/1993/31974
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsopen accessen_US
dc.subjectCFD, numerical simulation, supercritical water, flow instabilityen_US
dc.titleNumerical instability study of supercritical water flowing upward in two heated parallel channelsen_US
dc.typemaster thesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Li_Sujuan.pdf
Size:
2.47 MB
Format:
Adobe Portable Document Format
Description:
numerical simulation of supercritical water flow instability
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
2.2 KB
Format:
Item-specific license agreed to upon submission
Description:
Download
Collections
FGS - Electronic Theses and Practica