COST 732 in practice: the MUST model evaluation exercise

Sabatino, Silvana Di; Buccolieri, Riccardo; Olesen, Henrik; Ketzel, Matthias; Berkowicz, Ruwim; Joerg, Franke; Schatzmann, Michael; Schlünzen, K. Heinke; Leitl, Bernd; Britter, Rex; Borrego, Carlos; Costa, Ana Margarida; Castelli, Silvia; Reisin, Tamir; Hellsten, Antti; Saloranta, Jarkko; Moussiopoulos, Ν.; Barmpas, Fotios; Brzozowski, Krzysztof; Goricsán, István; Bálczó, Marton; Bartzis, John G.; Efthimiou, George C.; Santiago, José Luis; Martilli, Alberto; Piringer, Martin; Baumann‐Stanzer, Kathrin; Hirtl, Marcus; Baklanov, Alexander; Nuterman, Roman; Starchenko, Alexander V.

doi:10.1504/ijep.2011.038442

Cited by 74 publications

(35 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second, fourth and sixth locations along the y-axis correspond to the locations of the spanwise lines c03, c05 and c07 A large number of statistical performance measures have been proposed and used to evaluate dispersion models, see for example Chang and Hanna (2004). In the present case, the comparison will be performed using the metrics factor of two (Fa2), mean relative bias (MRB), fractional bias (FB), mean relative square error (MRSE), and normalized mean square error (NMSE), in line with the recommendations from the SMEDIS project (Carissimo et al 2001) and the more recent COST 732 action (Schatzmann et al 2010;Di Sabatino et al 2011).…”

Section: Discussionmentioning

confidence: 99%

On the Use of Computational Fluid Dynamics to Investigate Aerosol Dispersion in an Industrial Environment: A Case Study

Fossum

Reif

Tutkun

et al. 2012

Boundary-Layer Meteorol

View full text Add to dashboard Cite

Aerosol dispersion in the area surrounding an existing biological treatment facility is investigated using large-eddy simulation, with the objective to investigate the applicability of computational fluid dynamics to complex real-life problems. The aerosol sources consist of two large aeration ponds that slowly diffuse aerosols into the atmosphere. These sources are modelled as dilute concentrations of a non-buoyant non-reacting pollutant diffusing from two horizontal surfaces. The time frame of the aerosol release is restricted to the order of minutes, justifying a statistically steady inlet boundary condition. The numerical results are compared to wind-tunnel experiments for validation. The wind-tunnel flow characteristics resemble neutral atmospheric conditions with a Reynolds number, based on the boundary-layer thickness, of Re δ ≈ 2 × 10 5 . The numerical inflow conditions are based upon the wind-tunnel flow field. The predicted decay of both the mean and root-mean-square concentrations are in good agreement with experimental data; at 3 m from the ground, the plume mean concentration 200 m downwind of the source is approximately 2% of the source strength. The numerical data in the near-surface layer (0-50 m from the ground) correspond particularly well with the wind-tunnel data. Tentative deposition simulations suggest that there seems to be little difference in the deposition rates of large (1.8 × 10 −5 m) and small (3 × 10 −6 m) particles in the near-field under the flow conditions considered.

show abstract

Section: Discussionmentioning

confidence: 99%

On the Use of Computational Fluid Dynamics to Investigate Aerosol Dispersion in an Industrial Environment: A Case Study

Fossum

Reif

Tutkun

et al. 2012

Boundary-Layer Meteorol

View full text Add to dashboard Cite

show abstract

“…The requirements set out in three recent guidelines [32][33][34] were followed in the present work. The governing Eqs.…”

Section: Environ Fluid Mechmentioning

confidence: 99%

Application of CFD modelling to air quality in Kuwait City

2016

View full text Add to dashboard Cite

High-resolution computational fluid dynamics (CFD) simulations have been performed to assess the dispersion of air pollutants (CO 2 ) emanating from traffic in a busy street and in the vicinity of a complex configuration of buildings located in Salmiya, Kuwait City. New buildings are planned for this area, and the work here includes predictions for the dispersion of pollutants after the buildings' completion. The CFD simulations are based on calculated CO 2 concentration levels for traffic counts taken on location in Salmiya with the existing configuration of buildings. As the computer code used in this work has been evaluated previously, it will be applied here to predict with confidence any potential air pollution problem areas on the addition of the new buildings. It was found for very light wind, that the proposed new buildings help reduce pollution in the vicinity of residential buildings within the configuration of buildings, but as the wind becomes moderate to strong, there was a tendency for the pollutant to get trapped in the residential area. Results are given for both exceptionally high ambient temperatures and very light wind, which are not often reported in studies found in the literature.

show abstract

“…The results of the exercise were compiled (e.g. Olesen et al, 2008;Schatzmann et al, 2009;Di Sabatino et al, 2011). They concluded that flow and concentration model results compare relatively well with the measurements and the prediction for the streamwise velocity component is better than for the vertical velocity component.…”

Section: Introductionmentioning

confidence: 99%

Cross Comparisons of CFD Results of Wind and Dispersion Fields for MUST Experiment: Evaluation Exercises by AIJ

Tominaga

Iizuka

Imano³

et al. 2013

Journal of Asian Architecture and Building Engineering

View full text Add to dashboard Cite

In order to apply Computational Fluid Dynamics (CFD) techniques to estimate pollutant dispersion in urban areas, it is important to assess the performance of numerical models used to estimate these phenomena. Recently, the MUST (Mock Urban Setting Test) has often been adopted as a test case for evaluating numerical models for micro-scale urban meteorology. This paper presents the results of model evaluation exercises carried out using MUST based on the Architectural Institute of Japan (AIJ) experience. The results of model evaluation exercises conducted by AIJ are broadly consistent with the results obtained by the COST group. However, the variety of results by each computation can be minimized by setting standard computational conditions. All computations including both RANS and LES show good agreement with wind experiment data. In general, LES cases show comparable accuracy to RANS in predicting U and W. However, LES shows better agreement than RANS in TKE and concentration.

show abstract

COST 732 in practice: the MUST model evaluation exercise

Cited by 74 publications

References 3 publications

On the Use of Computational Fluid Dynamics to Investigate Aerosol Dispersion in an Industrial Environment: A Case Study

On the Use of Computational Fluid Dynamics to Investigate Aerosol Dispersion in an Industrial Environment: A Case Study

Application of CFD modelling to air quality in Kuwait City

Cross Comparisons of CFD Results of Wind and Dispersion Fields for MUST Experiment: Evaluation Exercises by AIJ

Contact Info

Product

Resources

About