The Effect of the Shape of Curved Ceilings on Sound Quality, Sunlight, and Heat Absorption in Lecture Halls

Architects' most essential design concern from the past to the present is the geometry of the ceiling form. By analyzing the geometry of various curved ceiling forms, one can find a suitable form in terms of heat absorption, sunlight, and sound quality. The geometry of the form is directly affected by the amount of volume, surface area (ratio of span ratio to height), and the equation of fit of its curve. This study examines the types of curved ceilings based on form geometry in terms of sound quality and sunlight. The main question is what effect does the geometry of the curved ceiling types have on sound quality, amount of sunlight, and heat absorption? The present study investigates Reverberation time, speech transfer index, speech clarity, amount of sunlight, and shading of the speech space in different arcs based on the equations of curve fitting and body shape. Each selected sample is drawn algorithmically in Grasshopper and using Odeon for acoustic simulation and Grasshopper to simulate the absorption of radiant energy of sunlight and the amount of shading and using the Energy Plus, Ladybug plugin. Descriptive analysis of forms with scatter matrix diagram and correlation coefficient analysis between architectural, acoustic, and sunlight variables were performed by Pearson method with SPSS۲۲. The analysis shows that by increasing the amount of area, volume and slope of the curve, it reduces the quality of reverberation time and the speech transmission index, and increases the amount of shade performance, sunlight and shade absorption.

Keywords:

Acoustic Quality , Solar Absorption , Curve Fitting , Form Geometry.