CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

authors Nikiforiadis, Faidon and Pitts, Adrian
year 2002
title A Study of the Accuracy of Daylighting Simulation of Heavily Obstructed Buildings in the Urban Canyons of Athens
source Connecting the Real and the Virtual - design e-ducation [20th eCAADe Conference Proceedings / ISBN 0-9541183-0-8] Warsaw (Poland) 18-20 September 2002, pp. 456-463
summary This paper deals with the use and evaluation of daylighting simulation tools in relation to a complex urban environment. The environment concerned is one commonly found in city centre areas where the proximity of buildings leads to the creation of ‘urban canyons’; the result of this is that assessment and simulation of daylight requires a more sophisticated approach than for other situations. In urban areas building layout is the most important factor effecting daylight, sunlight and solar heat gain reaching a building. It also affects sunlight in open spaces, ventilation, shelter and the dispersal of pollutants. In order to produce a more realistic understanding of the dynamic effects of daylight, there is a need not only for the research and development of advanced CAD and lighting simulation tools, but also of the study of possible alternative methods in their application. In the work reported in this paper, an attempt has been made to move the focus of lighting and daylighting simulation from the scale of a room to that of a whole building; the building itself being surrounded by its specific urban environment (including its microclimate). The study evaluates if there is sufficient evidence that it is possible with such complexity to reach reliable computation results after executing the simulation. The case study presented uses a 4D model of an urban canyon to investigate the sensitivity of such a complex simulation system. It can also be used to find ways to analyse and predict how daylight is reflected, refracted, scattered, diffused, polarised, diffracted and absorbed as it traverses an urban environment.
series eCAADe
email arp99fn@sheffield.ac.uk
full text file.pdf (355,094 bytes)
references Content-type: text/plain
details citation check to select
100%; open Alvarez, S., Coronel, J.F., Dupagne, A., Hall, D., Littlefair, P.J., Papanikoloaou, N., Santamouris, M. and Teller, J. (2000) Find in CUMINCAD Environmental site layout planning: solar access, microclimate and passive cooling in urban areas , Building Research Establishment, London
100%; open Ashdown, I. (1994) Find in CUMINCAD Radiosity: A programmer’s perspective , Wiley, New York
100%; open Asimakopoulos, D., Santamouris, M., Tsangrassoulis, A. and Tregenza, P.R. (1999) Find in CUMINCAD A method for the estimation of illuminances on surfaces of urban canyons with balconies in sunlit areas , Lighting Research and Technology 31(1) pp. 5-12
100%; open Littlefair, P.J. (1998) Find in CUMINCAD Site layout planning for daylight and sunlight , A guide to good practice BRE Report 209 Garston: Building Research Establishment
100%; open Mardaljevic, J. (2000) Find in CUMINCAD Simulation of annual daylighting profiles for internal illuminance , Lighting Research and Technology, 32(3) pp. 111-118
100%; open Mardaljevic, J. (2000) Find in CUMINCAD Daylight simulation: validation, sky models and daylight coefficients , PhD Thesis De Montfort University, Leicester, UK
100%; open Shakespeare, R. and Ward, G. (1998) Find in CUMINCAD Rendering with Radiance : The Art and Science of Lighting Visualisation , Morgan Kaufmannn, San Francisco
100%; open Tregenza, P.R. (1989) Find in CUMINCAD Modification of the split-flux formulae for mean daylight factor and internal reflected component with large external obstructions , Lighting Research and Technology 21 (3) pp 125-128
100%; open Tregenza, P.R. (1995) Find in CUMINCAD Mean Daylight Illuminance in Rooms Facing Sunlit Streets , Building and Environment 30 (1) pp. 83-89

last changed 2002/09/09 17:19
HOMELOGIN (you are user _anon_646301 from group guest) Works Powered by SciX Open Publishing Services 1.002