Augmented proper orthogonal decompositional for problems with moving discontinuities
Journal Article
·
· Powder Technology
A method is proposed to augment the proper orthogonaldecomposition basis functionswith discontinuitymodes 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.
- Research Organization:
- National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). In-house Research; National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- Sponsoring Organization:
- USDOE Assistant Secretary for Fossil Energy (FE)
- OSTI ID:
- 1013102
- Report Number(s):
- NETL-TPR-3636; TRN: US201110%%464
- Journal Information:
- Powder Technology, Vol. 203, Issue 1; ISSN 0032-5910
- Publisher:
- Elsevier B.V.
- Country of Publication:
- United States
- Language:
- English
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