The overall development of DAYSIM has been coordinated by Christoph Reinhart since 1998. The global illumination calculation in DAYSIM is based on the RADIANCE backward raytracer. Past and ongoing development work for DAYSIM has been conducted at
Individual simulation modules within DAYSIM were developed as follows:
2012 Multiple independent Shading and Lighting groups were implemented at MIT into the Daysim ds_electric_lighting program to support the modeling of complex dynamic facade systems and multiple zone lighting control systems.
2010 A new DAYSIM subprogram called gen_dgp_profile was developed at the Fraunhofer ISE to conduct annual glare simulations within DAYSIM based on the daylight glare probability concept.
2009 Daysim and 3dsMax simulation results were validated at Harvard University against measurements of five facade systems collected at the NRC Canada.
2006 Daysim simulations of a translucent glazing system were validated based on measurements conducted at MIT and the NRC Canada.
2004 The Lightswitch occupant behavior model was developed and implemented into the Daysim ds_electric_lighting subprogram at the National Research Council Canada based on field study data collected at the Fraunhofer ISE.
2003 A modified version of the RADIANCE program rtrace that calculates a set of daylight coefficients using either the traditional RADIANCE approach or PhotonMap forward raytraing was programmed at the Fraunhofer ISE.
2003 An early version of DAYSIM's JAVA graphical user interface was programmed at the NRC Canada.
2001: The DAYSIM subprogram to model the short-time step dynamics on indoor illuminance was developed and implemented at the Fraunhofer ISE.
2001: DAYSIM's dynamic daylight simulation module to simulate annual illuminance profiles was developed and implemented at the Fraunhofer ISE.
DAYSIM Subprograms
Header File Keywords
ab
ad
AdaptiveZoneApplies
ar
as
bin_directory
daylight_autonomy
daylight_savings_time
dgp_image_x_size
dgp_image_y_size
direct_sunlight_file
dj
dp
dr
ds
electric_lighting
electric_lighting_system
geometry_file
latitude
longitude
lower_diffuse_threshold
lower_direct_threshold
lr
lw
material_file
minimum_illuminance_level
occupancy
output_units
place
project_directory
project_name
radiance_source_files
sensor_file
sensor_file_info
sensor_file_unit
shading
site_elevation
sj
st
Template_File
thermal_simulation
time_step
time_zone
tmp_directory
user_profile
viewpoint_file
wea_data_short_file
wea_data_short_file_units
DAYSIM File Formats
© 2019 Created by Christoph Reinhart.
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