Parallel Multi-Scale Algorithms and Applications to Combustion and Turbulence.

Abstract

In this Project, the main objective was to develop multiresolution wavelet algorithm to study the flame acceleration and to understand the mechanism of the transition of deflagration to detonation. In the first half year of the project. The author completed the study of two dimensional detonation waves based on hybrid high order methods (a combination of high order Essentially Non-oscillatory (ENO) methods and spectral methods and Shock Tracking methods). The result on the detonation waves was published in the AIAA Journal. In the remaining time of the two years, first, the author completed the theoretical and algorithmic studies of the adaptive wavelet method, which could handle nonperodic boundary conditions and nonlinear time dependent PDE's. Secondly, the author implemented the adaptive wavelet methods for the solution of one-dimensional flame propagation; thirdly, the author developed a Fortran code WL2D (more than 13,000 lines) for the two dimensional multi-scale wavelet algorithms with an efficient data structure and implemented a second order implicit factorized scheme for the adaptive wavelet methods.

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Document Details

Document Type
Technical Report
Publication Date
Oct 24, 1996
Accession Number
ADA317593

Entities

People

  • Wei Cai

Organizations

  • University of North Carolina at Charlotte

Tags

DTIC Thesaurus Topics

  • Algorithms
  • Boundaries
  • Classification
  • Combustion
  • Deflagration
  • Detonation Waves
  • Detonations
  • Euler Equations
  • Fires
  • Flame Propagation
  • Flames
  • Interpolation
  • Mathematics
  • Numerical Analysis
  • Two Dimensional
  • Wavelet Transforms
  • Waves

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Image Processing and Computer Vision.
  • Technical Research and Report Writing.