Accession Number:

AD1104540

Title:

LES Modeling of Non local effects using Statistical Coarse graining

Descriptive Note:

Technical Report,01 Sep 2016,31 Aug 2019

Corporate Author:

REGENTS OF THE UNIVERSITY OF MICHIGAN ANN ARBOR United States

Personal Author(s):

Report Date:

2019-12-12

Pagination or Media Count:

22.0

Abstract:

The development of coarse-grained and reduced-complexity simulation models continues to be a pacing research challenge in computational physics. For instance, state-of-the-art techniques such as Large Eddy Simulation models are still not effective in many flows -- such as turbulent combustion -- in which sub-filter scales have a significant impact on transport processes. The major obstacle is to effectively reconcile the loss of information in the coarse-graining process and numerical discretization. The broad goal of our work is to approach multiscalemulti-physics modeling with 1. Minimal heuristics and phenomenology 2. Consideration of numerical implementation 3. lgorithmic efficiency 4. Provable non-linear stability 5. Scalable implementation 6. Applicability to complex discretizations 7. Applicable to arbitrarily complex physicsPDEs We pursue several lines of attack towards this end,

Subject Categories:

  • Computer Programming and Software
  • Operations Research
  • Numerical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE