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Title

Improved Modeling of High-Temperature Gas-Cooled Reactor Coolant Laminarization Using RELAP5‑3D

Organization

Department: Nuclear Eng'g & Health Physics

University: Idaho State University College: Science & Engineering Department: Nuclear Eng'g & Health Physics 23

Document Attachments

Resource	Length	Width	Thickness
Paper	0	0	0

Specimen Elements

City

Pocatello

Coverage

Unknown to Unknown

Creator

Robert W. Steele II

Publisher

Idaho State University

Type

Dissertation

Is Complete

No

Date Published

2/5/2025

Archive

digital

City: Pocatello

Degree

Doctorate

Document Attachments

Abstracts

In an effort to improve RELAP5-3D modeling of single-phase gas flows, experimental data demonstrating deteriorated heat transfer due to laminarization effects were used to develop new heat transfer correlations. Correlations correcting for buoyancy-induced and acceleration- induced laminarization were developed and added to the source code of RELAP5-3D. Using statistical analysis and comparison of results from RELAP5-3D simulations, the accuracy of the correlations was verified. Keywords: ADTHT, BDTHT, laminarization, RELAP