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Two Phase Flow Analysis Method

이상유동해석방법론

Graduate3 creditsElective major

A graduate course on what happens when water and steam flow together inside a small modular reactor, and on how to compute it. The first half lays the foundations of two-phase flow; in the second, teams take up a real problem arising in an SMR component and analyse it themselves.

How the course runs

01

First half

Foundations

  • Flow regimes and flow-regime maps
  • Conservation equations and the two-fluid model
  • Void-fraction models and two-phase pressure drop
  • Phase separation, flow instabilities, critical flow
  • Bubble nucleation and pool boiling
02

Second half

Team project (IC-PBL+)

  • Each team picks a two-phase-flow issue that actually arises in an SMR component or system
  • Frame it as an engineering problem and review the relevant literature and data
  • Select the governing equations and correlations that fit
  • Carry out quantitative analysis
  • Propose a suitable validation method

By the end of this course

  1. 01Apply two-phase-flow governing equations, flow-regime models, void-fraction models, and pressure-drop models to real SMR component conditions, and analyse the thermal-hydraulic behavior quantitatively.
  2. 02Formulate two-phase-flow issues in SMR design and operation as engineering problems, and set out the analysis strategy and procedure systematically: assumptions, governing equations, correlation selection, validation method.
  3. 03Investigate and analyse engineering problems using literature, data, and analysis tools, and arrive at evidence-based solutions.
  4. 04Synthesise results as a team, then present and document them convincingly.

Format

  • In-person lectures
  • IC-PBL+
  • Team project

Topics covered

  • Fundamentals and classification of two-phase flow
  • Flow regimes and flow-regime maps
  • Flooding and flow reversal
  • Conservation equations and the two-fluid model
  • Void-fraction modeling
  • Two-phase pressure-drop models
  • Steam and phase separation
  • Two-phase-flow instabilities
  • Critical and choked flow
  • Bubble nucleation and onset of nucleate boiling
  • Pool boiling and the boiling curve
  • Departure from nucleate boiling and dryout
  • Post-CHF heat transfer
  • Transient and lumped-parameter analyses
  • Loop and natural-circulation analyses
  • Subchannel analysis and uncertainty treatment
  • Application of two-phase-flow models to SMR components
  • Validation and assessment of engineering correlations

Course information

Course code
NUE9012
Credits
3 credits
Category
Elective major
As of
Fall 2026
Prerequisites
COE 351, 352, NUE2007, NUE3061, NUE4014, NUE8061, or permission of the instructor

Sustainable Development Goals

  • SDG 7Ensure access to affordable, reliable, sustainable and modern energy for all
  • SDG 10Reduce inequality within and among countries

Check the academic portal for sections, timetables and rooms.

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