A metamodelling implementation of a two-way coupled mesoscale-microscale flow model for urban area simulations
by G. Tsegas; Ph. Barmpas; I. Douros; N. Moussiopoulos
International Journal of Environment and Pollution (IJEP), Vol. 47, No. 1/2/3/4, 2011

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.

Online publication date: Thu, 30-Apr-2015

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