Turbulent dispersion of passive scalar quantities has been extensively studied in wind tunnel settings, where the flow is carefully conditioned using flow straighteners and grids. Much less is known about turbulent dispersion in the "unconditioned" flows generated by fans that are ubiquitous in indoor environments, despite the importance of these flows to pathogen and contaminant transport. Her...

Observation of terrestrial mammals suggests that they can follow the wind (anemotaxis), but the sensory cues underlying this ability have not been studied. We identify a significant contribution to anemotaxis mediated by whiskers (vibrissae), a modality previously studied only in the context of direct tactile contact. Five rats trained on a five-alternative forced-choice airflow localization ta...

Amid concerns over airflow-induced transmission of the COVID-19 virus in buildings frequented by large numbers people, such as offices, necessity for radiant ceiling heating panels has increased. This is due to concern that airflows emitted from convection systems installed near or windows winter may be a major cause transmission. In this study, we aim evaluate thermal comfort under various ind...

The majority of cultural heritage is stored in archives, libraries and museum storage spaces. To reduce degradation risks, many archives adopt the use archival boxes, among other means, to provide necessary climate control comply with strict legislation requirements regarding temperature relative air humidity. A ambient indoor assumed adequate environmental conditions near objects. Guidelines f...

This study investigates the influence of side wind flowing directly from different indoor environments on airflow laboratory fume hood (LFH). When an LFH is used to discharge harmful laboratory, can affect LFH, which likely cause leakage fumes. In this study, incense was simulate fumes, sampling and analysis total suspended particulate concentrations were performed in under conditions with or w...

This paper studies the effect of natural ventilation on spread COVID-19 virus from a patient room to an adjacent with help airflow. The importance this study is since contamination can easily transfer airflow one next or corridor. aims determine spaces patients’ room.For evaluation, we have used mechanical modelling and CFD simulation evaluate transmission contaminated space clean space. During...

Infection containment in the post-pandemic scenario became a top priority for healthcare engineering control staffers, especially pneumology sectors, where treatment of airborne infectious diseases is frequent. In Brazil, COVID-19 left long record casualties, there lack information on influence filtration systems maintenance regulated operational conditions indoor comfort hospital environments....