Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session X17: Convection and Buoyancy-Driven Flows: General III
8:00 AM–10:36 AM,
Tuesday, November 21, 2023
Room: 145B
Chair: Andrew Wynn, Imperial College London
Abstract: X17.00002 : Fast MILES solver: validation of a new scalable tool to study and optimize indoor ventilation
8:13 AM–8:26 AM
Presenter:
Niklaus Leuenberger
(Stanford University)
Authors:
Niklaus Leuenberger
(Stanford University)
R. Yang
(University of Twente)
L. Münzel
(ETH Zurich)
R. Verzicco
(Univ of Roma Tor Vergata)
D. Lohse
(University of Twente)
L. Bourouiba
(Massachusetts Institute of Technology MIT)
P. Jenny
(ETH Zurich)
The most accurate Direct Numerical Simulation (DNS) of displacement ventilation flows is very expensive and impractical for large geometries. We demonstrate how a Monotonically Integrated Large Eddy Simulation (MILES) could be used as a cheaper alternative for the simulation of such flows.
We compare the results from MILES to gold-standard DNS simulations, discuss the validity and limitations of the MILES approach to address questions of indoor airflow patterns in larger indoor spaces, and illustrate the approach by simulating air flow patterns in a large auditorium. Although further validation is required before the tool can be used for risk assessment, it has the potential to bridge the gap between prohibitively expensive flow simulations preventing case comparisons at scale, and overly simplistic models relying on perfectly-mixed conditions, which are known to lead to erroneous indoor risk assessments.
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