Abstract
This experimental study presents the results obtained from open-return wind tunnel tests to investigate turbulent flows in a street canyon model. The inlet was conditioned using spires and roughness in order to simulate atmospheric boundary layer characteristics. Test were performed with a street canyon model, which consisted of two 50 mm tall blocks separated by a distance of 45.7 mm, at a fan speed of 46 Hz. Particle image velocimetry (PIV) was used to determine the local ensemble-averaged velocity vector fields at the mid-plane of the street canyon model. Proper orthogonal decomposition was used to identify the dominant modes of turbulent motions, which demonstrated a vortex core between the street canyon walls, as well strong sweep/ejection events. The PIV data provide detailed information about the fluid–structure interactions, which is the inertia force on particle trajectory, and can lead to entrainment and/or ejection of particles within the modelled street canyon.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Al-Nehari HA et al (2010) Design and construction of a wind tunnel for environment flow studies. J Eng Sci 38(1):177–193
Arya S (1991) Air Pollution Meteorology and Dispersion, Oxford University Press, 1999
Cermak JE (1984) Physical modelling of flow and dispersion over complex terrain. Bound-Layer Meteorol 30:261–292
Chino M et al (2011) Preliminary estimation of release amounts of 131I and 137Cs accidentally discharged from the Fukushima Daiichi nuclear power plant into the atmosphere. J Nucl Sci Technol 48(7):1129–1134
Counihan J (1973) Simulation of an adiabatic urban boundary layer in a wind tunnel. J Atmos Env 7:673–689
Dantec Dynamics (2018) Dynamic studio user’s guide, No. 904U1866, Slovlunde, Denmark
Hummel DW et al (2020) Radiation dose consequences of postulated limiting accidents in small modular reactors to inform emergency planning zone requirements. Ann Nucl Energy 137(107062):1–15
IAEA (2015) The Fukushima Daiichi Accident: Technical Volume 1: description and context of the accident. International Atomic Energy Agency publication STI/PUB/1710, Vienna
Jorgersen FE (2002) How to measure turbulence with hot-wire anemometers—a practical guide. Dantec Dynamics
Katata G et al (2012) Atmospheric discharge and dispersion of radionuclides during the Fukushima Dai-ichi Nuclear power plant accident. Part I: source term estimation and local-scale atmospheric dispersion in early phase of the accident. J Env Radio 109:103–113
Katata G et al (2015) Detailed source term estimation of the atmospheric release for the Fukushima Daiichi Nuclear Power Station accident by coupling simulations of an atmospheric dispersion model with an improved deposition scheme and oceanic dispersion model. Atm Chem Phy 15(2):1029–1070
Kellnerová R et al (2012) PIV measurement of turbulent flow within a street canyon: detection of coherent motion. J Wind Eng Ind Aero 104–106:302–313
Morsi SA, Alexander AJ (1972) An investigation of particle trajectories in two-phase flow systems. J Fluid Mech 55:193–208
Pöllänen R et al. (1995) Transport of large particles released in a nuclear accident. Finnish Centre Rad Nucl Safety, Helsinki, Finland
Suetake M et al (2019) Dissolution of radioactive, cesium-rich microparticles released from the Fukushimi Daiichi Nuclear power plant in simulated lung fluid, pure-water, and seawater. Chemosphere 233:633–644
Vervecken L et al (2015) Stable reduced-order models for pollutant dispersion in the built environment. Build Env 92:360–367
Acknowledgements
This study was funded by Atomic Energy of Canada Limited, under the auspices of the Federal Nuclear Science and Technology Program.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2023 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Cottingham, K., Bowden, R.C., Yang, SK. (2023). Experiments with a Street Canyon Wind Tunnel Model Using PIV: Preliminary Results and Future Directions. In: Wang, L.L., et al. Proceedings of the 5th International Conference on Building Energy and Environment. COBEE 2022. Environmental Science and Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-19-9822-5_32
Download citation
DOI: https://doi.org/10.1007/978-981-19-9822-5_32
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-19-9821-8
Online ISBN: 978-981-19-9822-5
eBook Packages: EngineeringEngineering (R0)