The document discusses various methods of air movement in buildings, including the effects of wind, turbulence, ventilation needs, and different techniques like cross-ventilation, the venturi effect, stack effect, solar chimneys, fans, and courtyards. Air movement in buildings is caused by wind pressure, the stack effect, and combustion/ventilation, and pairing a large outlet with a small inlet can increase incoming wind speed. Building structures can redirect winds to enable cross-ventilation, while fans, courtyards, and effects like the stack effect and solar chimneys also facilitate air flow. Ventilation is important for removing odors and providing fresh air as well as heating and cooling buildings.

1. AIR MOVEMENT
PROF. VIJESH KUMAR V,
Asst. Professor
Mc GAN’s School of Architecture

2. The Wind
• What?
• How?
• Why?

6. Why we require Ventilation?
• Removal of bad odours
• Fresh air
• Heating / Cooling

8. TURBULANCE
Roughness creates mechanical turbulence, while surface
heating causes thermal turbulence in the airflow.

28. Air movement through the building is
due to;
• Wind Pressure
• Stack effect
• Combustion and Ventilation

35. Pairing a large outlet with a small inlet increases incoming wind speed.

36. Building structures can redirect prevailing winds to cross-ventilation

39. Venturi Effect

42. Stack Effect / Chimney Effect

45. Solar Chimney

48. FANS…

49. Why Fan?

51. COURTYARD…