This presentation, titled „Applied CFD in an Indoor Environment,” was delivered by Professor Sasan Sadrizadeh from the KTH Royal Institute of Technology. It serves as a comprehensive introduction to Computational Fluid Dynamics (CFD), specifically within the context of healthcare facilities and indoor air quality. The lecture outlines key learning objectives, including the ability to explain CFD equations, describe simulation workflows, and critically assess indoor airflow studies. Professor Sadrizadeh details the mechanics of CFD simulations, breaking them down into essential steps: pre-processing, solving, and post-processing. The content emphasizes why CFD is a potent alternative to experimental investigation, particularly for visualizing air movement and pollutant distribution in complex spaces like hospital wards and operating rooms. Additionally, the presentation explores various ventilation types, such as piston, mixing, and hybrid flow, and their impact on contaminant removal.Finally, it addresses the critical factors of thermal comfort—including humidity and air speed—and how digital modeling can enhance the well-being of occupants

