Transient Modeling of Two-Phase Steam in a Piping System

Abstract

The characteristics of two-phase steam flows in piping systems under transient conditions are a critical area of research for the Department of the Navy. Simulating these cases is necessary to improve future reactor designs' safety, efficiency, and performance. Current steam piping systems are designed to prevent moisture accumulation. Such designs are often unnecessarily conservative, increasing complexity and cost while lowering efficiency. This project aimed to build on previous steady-state simulations, using TRAC/RELAP Advanced Computational Engine (TRACE) to predict the moisture distribution in transient two-phase high quality steam flows. The transient conditions modeled reflected the fluctuations in pressure and moisture content that result from changes in steam plant operation. The performance of TRACE was evaluated for these scenarios and compared with open literature data. These simulations will serve as baseline models for further research concerning transient conditions in steam piping systems.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2023
Accession Number
AD1213648

Entities

People

  • Damien A. Stonhill

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Annular Flow
  • Case Studies
  • Coefficients
  • Computational Fluid Dynamics
  • Fluid Dynamics
  • Fluid Flow
  • Geometry
  • Heat Energy
  • Heat Transfer
  • Heat Transfer Coefficients
  • Latent Heat
  • Mechanical Engineering
  • Mechanical Properties
  • Payload
  • Propulsion Systems
  • Reynolds Number
  • Temperature Gradients
  • Thermal Conductivity
  • Thermodynamic Properties
  • Thermodynamics
  • Three Dimensional
  • United States
  • United States Naval Academy

Readers

  • Agricultural Chemistry/Soil Science
  • Combustion and Flow Dynamics.
  • Systems Analysis and Design