Title: A metamodelling implementation of a two-way coupled mesoscale-microscale flow model for urban area simulations

Authors: G. Tsegas; Ph. Barmpas; I. Douros; N. Moussiopoulos

Addresses: Department of Mechanical Engineering, Laboratory of Heat Transfer and Environmental Engineering, Aristotle University, Box 483, 54124 Thessaloniki, Greece ' Department of Mechanical Engineering, Laboratory of Heat Transfer and Environmental Engineering, Aristotle University, Box 483, 54124 Thessaloniki, Greece ' Department of Mechanical Engineering, Laboratory of Heat Transfer and Environmental Engineering, Aristotle University, Box 483, 54124 Thessaloniki, Greece ' Department of Mechanical Engineering, Laboratory of Heat Transfer and Environmental Engineering, Aristotle University, Box 483, 54124 Thessaloniki, Greece

Abstract: Systems of coupled prognostic mesoscale and microscale models have been suggested as a tool to accurately simulate flows around artificial structures and over densely built urban areas. Implementations of such two-way coupling are burdened by scale mismatches as well as the formidable computational cost of online microscale calculations. A simplifying approach is proposed, where microscale feedbacks are spatially and temporally upscaled and assimilated into the mesoscale calculation. A two-way coupled model system is developed, consisting of the mesoscale model MEMO and the microscale model MIMO, employing interpolating metamodels. As an illustrative application, multi-day simulations for Athens, Greece are presented.

Keywords: metamodelling; urbanisation; mesoscale models; microscale models; two-way coupling; urban simulation; flow modelling; dispersion modelling; air pollution; air quality; Greece; Athens.

DOI: 10.1504/IJEP.2011.047342

International Journal of Environment and Pollution, 2011 Vol.47 No.1/2/3/4, pp.278 - 289

Received: 08 May 2021
Accepted: 12 May 2021

Published online: 11 Jun 2012 *

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