2025 Workshop on Flow Measurement Techniques in Extreme Environments

This two-day workshop will unite leaders in fluid, thermal, and solid mechanics to tackle the challenges of measuring and modeling complex phenomena under extreme conditions. Extreme conditions refer to fast transients happening at microscopic spatio-temporal scales, which lead to compressibility effects coupled with extreme pressure and temperature. Such environments are encountered in a variety of regimes. These include cavitation erosion, boiling, hypersonic boundary layers (with ablation and erosion effects), additive manufacturing processes, ice accretion, or high-energy-density physics. These communities have leveraged progress in hardware and software to advance their diagnostics. However, they typically operate in siloed environments, and it would be opportune to bring them together to discuss recent developments and identify synergy and collaboration opportunities.

To guide the development of next-generation instrumentation, select experimental, computational, and theoretical experts will present critical modeling gaps, highlighting where experimental data is most needed. The program will feature cutting-edge techniques, identify future trends, and foster collaboration across hydrodynamics, aerodynamics, multiphase flows, acoustics, thermal science, surface chemistry, advanced materials, and solid mechanics. Participants from NATO countries, including academia, government labs, industry, and key funding agencies, will shape a path toward a data-rich, integrated future in extreme fluid dynamics.

Agenda

Thursday August 21st
Day 1 
TimeTopicSpeaker
8:00-8:30Welcoming remarks, Structure, and Goals 
8:30-9:15Plenary: Cavitation Erosion - knowledge gaps and instrumentation needsThad Michaels
9:15-10:00Plenary: Diagnostics for fast transientsPaul Danehy
10:00-10:30

Break

 
10:30-12:00Round Robin Presentations - 1
10:30-10:45Cavitation Erosion: Experiments in the Navy’s William B. Morgan Large Cavitation ChannelJoel Hartenberger
10:45-11:00Soft interferometry sensor for wall stress measurements in high Re turbulent flows.Jian Sheng
11:00-11:153D Flow Measurements Within Turbomachines and Rough Wall Boundary LayersJoseph Katz
11:15-11:30Beyond velocity: Near-wall flow and scalar field diagnostics with advanced molecular tagging velocimetryCharles Fort
11:30-11:45Local Rheological Probes of Stress Heterogeneities in Flowing Complex FluidsDaniel Blair
11:45-12:00Advancing direct van der Waals simulation to FlowX conditionsHector Gomez
12:00-13:00

Lunch & Lab Tours

 
13:00-15:00Round Robin Presentations - 2
13:00-13:15Neural Data Assimilation from Particle Tracks for Turbulence, Buoyancy, and FSI Flow ReconstructionSam Grauer
13:15-13:30Embedded Imaging in Harsh EnvironmentsBrian Thurow
13:30-13:45Visual microphoneRobert Pless
13:45-14:00Photon Doppler Velocimetry Measurements of Shock Wave - Particle Curtain Experiments in the LANL Horizontal Shock TubeChris Noble
14:00-14:15Direct simulations of BoilingElias Balaras
14:15-14:30“Off the grid” modeling and simulationSteven Rodriguez
14:30-14:45Hypersonic Turbulent Quantities and Drop Aerobreakup/ImpactNick Parziale
14:45-15:00An Overview of Recent High-Speed Droplet Aerobreakup and Impingement Simulations and Modeling ChallengesChris Brehm
15:00-15:30

Break

 
15:30-17:30Breakout sessions - 1 
17:30-18:00Breakout summaries 
18:30social 

 

Friday August 22nd
Day 2
8:00-8:45Day 1 summary and Goals 
8:45-9:30Plenary: Diagnostics Capability Overview for dynamic measurementsMinta Akin
9:30-10:15Plenary: Analysis of Erosion in Aerospace Structures Using PeridynamicsIbrahim Guven
10:15-10:30

break

 
10:30-12:00Round Robin Presentations - 3
10:30-10:45Non-equilibrium measurementsArthur Dogariu
10:45-11:00Laser Diagnostics in High-Enthalpy Ground-Test FacilitiesSean Kerney
11:00-11:15High Velocity High Temperature Impact Experiments: Investigating Material Response Under Extreme ConditionsSuraj Ravindran
11:15-11:30Temperature and Pressure Sensitive Paints for high-speed flowsDaniel Reese
11:30-11:45Ballistic Imaging for Optically Thick Bubbly FlowsDaniel Hunter
11:45-12:00In-Lab X-ray Techniques for Multiphase FlowsSimo Makiharju
12:00-13:00

Working lunch - Panel Discussion: Funding Agencies Needs

ONR (Yin-Lu Young, Eric Marineau), NNSA (James Peltz) 

 
13:00-15:00Breakout sessions 
15:00-15:30

Break

 
15:30-16:00Breakout summaries 
16:00-17:30Workshop summary and action items 
18:00social