UNH Boundary Layer Workshop, 2015

High Reynolds Number Boundary Layer Turbulence: 
Advancing Wall-Turbulence Model Development and Implementation 
University of New Hampshire, November 19-20, 2015

Over the past decade there has been increasing activity relating to the construction and implementation of more rigorously founded and thus higher fidelity models of wall turbulence. Toward furthering these exciting new developments, in 2013 the Integrated Applied Mathematics Program at the University of New Hampshire, in concert with the NSF CBET/Fluid Dynamics Program, hosted a workshop entitled: High Reynolds Number Boundary Layer Turbulence: Integrating Descriptions of Statistical Structure, Scaling and Dynamical Evolution. This workshop has helped to cultivate a community of applied mathematicians, computational scientists, and experimentalists who are working on a variety of inter-related modeling approaches.

Since then, however, it has become apparent that further advances can be accelerated by fostering among the members of this emerging community, a deeper understanding of the practical details of the various models under development. This is the aim of the UNH/IAM Workshop on Advancing Wall-Turbulence Model Development and Implementation. This workshop will be held on November 19-20, 2015 at the UNH Durham campus, i.e., just prior to the APS-DFD meeting November 22-24 in nearby Boston.

Even more so than previously, the aim is an authentic workshop, from which the participants develop a practically useful understanding of the relevant modeling and analysis methods. As such it will only have four sessions (two per day), each of which will focus on one of four primary modeling themes: Quasi-linearized Models,  Asymptotically Reduced PDE Models, Data Informed Sparse Representations, and Exact Coherent Structures .


Scientific Program

Session 1: Quasi-Linearized Models

Thursday 11/19 9am-noon. Moderator: Javier Jiménez, Universidad Politécnica de Madrid

  1. Tutorial: Quasi-lineariation of anisotropic & inhomogeneous flows, Brad Marston, Brown University
  2. A restricted nonlinear framework for studying wall turbulence, Dennice Gayme, Johns Hopkins.
  3. Structure and mechanism in second-order  statistical state dynamics models of wall-bounded shear-flow turbulence, Brian Farrell, Harvard

Session 2: Asymptotically Reduced PDE Models

Thursday 11/19 1:30-5:00pm. Moderator: Rich Kerswell, Bristol

  1. Tutorial: Keith Julien, UC Boulder
  2. Reduced description of exact coherent states in parallel shear flows, Edgar Knobloch, UC Berkeley
  3. Multiscale equations for strongly stratified turbulent shear flows, Greg Chini, U New Hampshire

Session 3: Data Informed Sparse Representations

Friday 11/20 9am-noon. Moderator: Beverly McKeon, Cal Tech

  1. Tutorial: Systems Perspectives in fluid dynamics, Maziar Hemati, U Minnesota
  2. A systems approach to turbulence: two applications, Ati Sharma, Southhampton
  3. A systems approach to fluid dynamics: input-output models, Simon Illingworth, Melbourne

Session 4: Exact coherent structures

Friday 11/20 1:30-5:00pm. Moderator: Bruno Eckhardt, Marburg

  1. Tutorial: Exact coherent structures in turbulence: framework, numerics, and questions, John Gibson, U New Hampshire
  2. Exact coherent structures in boundary layer turbulence, Tobias Kreilos, Lausanne Polytechnic
  3. Lennaert van Veen, Ontario Institute of Technology