2-s2.0-85088402105

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[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2019 and published by the Architectural Science Association (ANZAScA).In this study, the genetic algorithm method is adopted to optimise the ellipsoid parameters of faceted reflector; i.e. solid angles of θ and ϕ, semi-latus rectum (d), and eccentricity (e). There are two types of reflector which designed in this study, those are divergent and convergent. Both designs are verified through simulation with the target of illuminance (Eav) and uniformity (Ul) values, which conform to the national standard for highway lighting. The approach of one-to-one mapping is used in optimisation, thus one facet illuminates one target point precisely. From the optimisation stage, it is yielded the ranges of θ angles from 0° to 36° (for divergent type) and 0° to 43° (for convergent). Meanwhile for ϕ angles, it gave the ranges of 0° to 58° (divergent) and 0° to 85° (convergent). The d values are ranged between 0.52 m to 0.66 m (for divergent type) and 0.53 m to 0.65 m (for convergent), while the eccentricities have ranges from 0.95 to 0.98 (divergent) and 0.95 to 0.99 (convergent). From final simulation, the values of Eav are varied from 22.2 lx to 70.3 lx with Ul = 0.4; which fulfilled the standard requirements of minimal 20 lx and Ul = 0.2.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Eccentricity,Faceted reflector,Semi-latus rectum,Solid angles[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]This research was supported by the Ministry of Research, Technology, and Higher Education of the Republic of Indonesia, through the Fundamental Research Program 2019; and by the Institute of Research and Community Services of Institut Teknologi Bandung (LPPM ITB), through the ITB Multidisciplinary Research Program 2019.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]