Augmented proper orthogonal decomposition for problems with moving discontinuities Academic Article

abstract

• A method is proposed to augment the proper orthogonal decomposition basis functions with discontinuity modes to better capture moving discontinuities in reduced-order models. Moving discontinuities can be shocks in unsteady gas flows or bubbles in multiphase flow. The method is shown to work for a simple test problem using the first-order wave equation. A method for detecting discontinuities numerically is developed using mathematical morphology. This method is shown to properly identify the edges of bubbles in multiphase flow. 2010 Elsevier B.V.

authors

• Cizmas, Paul

published proceedings

• Powder Technology

author list (cited authors)

• Brenner, T. A., Fontenot, R. L., Cizmas, P., O'Brien, T. J., & Breault, R. W.

complete list of authors

• Brenner, Thomas A||Fontenot, Raymond L||Cizmas, Paul GA||O'Brien, Thomas J||Breault, Ronald W

publisher

• Elsevier  Publisher

published in

• Powder Technology  Journal

keywords

• 40 Engineering
• 4012 Fluid Mechanics And Thermal Engineering

Digital Object Identifier (DOI)

• 10.1016/j.powtec.2010.03.032

start page

• 78

end page

• 85

volume

• 203

issue

• 1