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Comparison of the IFDM building downwash model predictions with field data

Investigating the accuracy of IFDM building downwash model predictions through field data validation. Results show promising potential for various applications.

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Comparison of the IFDM building downwash model predictions with field data

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  1. Comparison of the IFDM building downwash model predictionswith field data W. Lefebvre, G. Cosemans, J. Kegels

  2. Table of contents • Introduction • Model description • Field data • Validation • Conclusions

  3. Introduction • Olesen et al. (2009): • Limitations of current building downwash models, especially close to the buildings. • Interesting dataset byThompson, notfullyexploited • Development of new building downwash routine (Cosemans et al., 2012) Sourcephoto: Scorer, 2002

  4. Cosemans et al., 2012 Model description

  5. Cosemans et al., 2012 Model description

  6. Cosemans et al., 2012 Model description

  7. Cosemans et al., 2012 Model description

  8. Cosemans et al., 2012 Model description • Itreproduces the Thompson dataset • Butalsoreality?

  9. Field data Dailymeasurements at fourlocations close to the sources During 2 years (2010-2011) Two zones withemissions • Simulations: • With building downwash • Without building downwash

  10. Lefebvre et al., 2013 Validation

  11. Lefebvre et al., 2013 Validation

  12. Lefebvre et al., 2013 Validation

  13. Lefebvre et al., 2013 Validation

  14. Lefebvre et al., 2013 Validation: Q-Q plots

  15. Lefebvre et al., 2013 Validation

  16. Conclusions • New building downwash model • Applicationon field data • Goodvalidation • Model canbeusedfor: regulatorypurposes, exposureestimates, scenario analysis • References: • Cosemans G., Lefebvre W., Mensink C., 2012. Calculationschemefor a Gaussianparameterization of the Thompson 1991 wind tunnel building downwash dataset, Atm. Env., 59, 355-365, doi: 10.1016/j.atmosenv.2012.05.17 • Lefebvre W., Cosemans G., Kegels J., 2013. Comparison of the IFDM building downwash model predictionswith field data, Atm. Env., published online, doi:10.1016/j.atmosenv.2013.04.022

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