Isogeometric Phase-field Simulation of Boiling

Abstract

In this work we consider the Navier-Stokes-Korteweg equations, a diffuse interface model describing liquid-vapor phase transitions. A numerical scheme for this model is constructed based on functional entropy variables and a new time integration concept. The fully discrete scheme is unconditionally stable in entropy and second-order time-accurate. Isogeometric analysis is utilized for spatial discretization. The boiling problem is numerically investigated by making proper assumptions on transport parameters and boundary conditions. Compared with traditional multiphase solvers, the dependence on empirical data is significantly reduced, and this modeling approach provides a unified predictive tool for both nucleate and film boiling. Both two- and three-dimensional simulation results are provided.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2015
Accession Number
AD1000131

Entities

People

  • Ju Liu
  • Thomas J.R. Hughes

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boiling
  • Boundaries
  • Bubbles
  • Contracts
  • Energy
  • Energy Transfer
  • Engineering
  • Equations
  • Film Boiling
  • Heat Energy
  • Nucleate Boiling
  • Phase Transformations
  • Three Dimensional
  • Time Intervals
  • Transitions
  • Two Dimensional
  • Vapor Phases

Readers

  • Combustion and Flow Dynamics.
  • Computational Fluid Dynamics (CFD)
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)