Chengzhi Peng, Amr Elwan



Urban dwellers in cities located in hot-arid or hothumid regions have greater needs to live in between outdoor and indoor environments. The sustainability of urban building design in these regions cannot be fully assessed by indoor environmental simulation not taking into account the microclimatic factors of the surrounding urban neighbourhood. We find that the current suites of outdoor and indoor simulation software do not connect with each other to give us a holistic understanding of both outdoor and indoor simulation results. This paper reports on our current development of a methodological framework for bridging the current gap between outdoor and indoor environmental simulation. Our objective is that assessment of sustainability at an urban neighbourhood level can be carried out more holistically, and hence achieving more valid environmental simulations from an urban  dwelling point of view. The outdoor-indoor coupling methodology is currently modelled on a digital work flow among three key software platforms: (1) ENVImet for urban neighbourhood outdoor simulation, (2) Ecotect for building indoor simulation, (3) uCampus for combined outdoor-indoor 3D visualisation modelling of an entire urban neighbourhood including its individual buildings. A case study of a new neighbourhood development proposed for New Cairo is presented to demonstrate how indoor environmental simulation can be grounded on outdoor environmental simulation of the urban neighbourhood. Graphical outputs from this outdoorindoor coupling approach to neighbourhood simulation can be further brought together onto a Web-based 3D virtual reality modelling platform to enable wider accessibility. 


Urban neighbourhood design, outdoor-indoor coupled environmental simulation, Web3D visualisation, ENVI-met; ecotect, uCampus

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Ali-Toudert, F., Djenane, M., Bensalem, R., Mayer, H. (2005). Outdoor thermal comfort in the old desert city of Beni-Isguen, Algeria, Climate Research, 28(3), 243-256.

Ali-Toudert, F. and Mayer, H. (2007). Effects of asymmetry, galleries, overhanging fac¸ades and vegetation on thermal comfort in urban street canyons. Solar Energy, 81(6): p. 742–754.

Bruse, M. and ENVI-met Team(2011). ENVI-met Version 3.1 BETA V (incl. LEONARDO 3.75) Latest Build: 04-Oct- 2010,

Chalfoun, N. V. (2003). Sustainable Urban Design in Arid Regions; Integrating Energy and Comfort, Collaborative Symposium: Urban Design in Arid Regions, The University of Arizona and The Pontificia Universidad Catolica De Chile, May 2003.

Chen, Q. and Srebric, J. (2000). Application of CFD tools for indoor and outdoor environment design, International Journal on Architectural Science, 1(1), 14-29.

Crawley, D. B., Hand, J. W., Kummert, M. and Griffith, B. T. (2008). Contrasting the capabilities of building energy performance simulation programs, Building and Environment 43, 661–673.

Eliasson, I. (2000). The use of climate knowledge in urban planning. Landscape and Urban Planning, 48(1-2): p. 31-44.

ENVI-met 3.1 Manual (2011).

Fahmy, M. and Sharples, S. (2008). Passive design for urban thermal comfort: a comparison between different urban forms in Cairo, Egypt, PLEA 2008 – 25th Conference on Passive and Low Energy Architecture, Dublin, 22nd to 24th October 2008.

Fahmy, M. and Sharples, S. (2009). On the development of an urban passive thermal comfort system in Cairo, Egypt, Building and Environment, 44, 1907–1916.

Fahmy, M., Trabolsi, A. and Sharples, S. (2009). Dual stage simulations to study microclimate thermal effect on comfort levels in a multi-family residential building, in the 11th International Building Performance Simulation Association Conference, University of Strathclyde, Glasgow, 27-30 July.

Fahmy, M. (2010). Interactive urban form design of local climate scale in hot semi-arid zone, Unpublished PhD Thesis, University of Sheffield, UK.

Fahmy, M., Hathway, A., Pattacini, L. and Elwan, A. (2011). Environmental thermal impact assessment of regenerated urban form: A case study in Sheffield, World Renewable Energy Congress 2011, 8-13 May 2011, Linkoping, Sweden.

Oke, T. R. (1984). Towards a prescription for the greater use of climatic principles in settlement planning. Energy and Buildings, 7(1): p. 1-10.

Ozkeresteci, I., Crewe, K., Brazel, A. J. and Bruse, M. (2003). Use and evaluation of the ENVI-met model for environmental design and planning: an experiment on linear parks, Proceedings of the 21st International Cartographic Conference (ICC), Durban, South Africa, 10-16 August 2003.

Parsons, A. J. and Abrahams, A. D. (Editors, 2009). Geomorphology of Desert Environments, Springer.

Peng, C., Roberts. D., Patlakas, P. and Basu, P. (2010). Developing a Web-Based 3D Visualisation Modelling Platform to Support Innovative Planning and Design of Learning Spaces: A Case Study of the University of Sheffield Campus, in Proceedings of the 10th International Conference on Design and Decision Support Systems in Architecture and Urban Planning, Eindhoven, July 19 – 22 2010.

Peng, C. (2011). uCampus: Can an open source 3D interactive virtual campus modelling platform support institutional learning and innovation?,

International Journal of Architectural Computing, 9(3), 303-324.

Ratti, C., Raydan, D. and K. Steemers (2003). Building form and environmental performance: archetypes, analysis and an arid climate, Energy and Buildings, 35(1), 49-59.

Spangenberg, J. (2004). Improvement of Urban Climate in Tropical Metropolis - a Case Study, Master Thesis, Institute for Technologies in the Tropics, University of Applied Sciences Cologne.

Tanimoto, J., Hagishima, A., and Chimklai, P. (2004). An approach for coupled simulation of building thermal effects and urban climatology, Energy and Buildings, 36(8), 781–793. US Department of Energy. EneryPlus Energy Simulation Software: Weather Data, http://apps1.

Vangimalla, P. R. Olbina, S. J. Issa, R. R. Hinze, J. (2011). Validation of Autodesk Ecotect Accuracy for

Thermal and Daylighting Simulations, in Proceedings of the IEEE 2011 Winter Simulation Conference (S. Jain, R.R. Creasey, J. Himmelspach, K.P. White, and M. Fu, eds.).

Yahia. M. W. and Johansson, E. (2012). Influence of urban planning regulations on the microclimate in a hot dry climate: The example of Damascus, Syria, Journal of Housing and the Built Environment, Online

First™, 23 March 2012.

Zhou, J., Zhang, G., Lin, Y. and Li, Y. (2007). Coupling of thermal mass and natural ventilation in buildings, Energy and Buildings, 40(6), 979–986.


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