Author/Authors :
Sivakumar, V Department of Mechanical Engineering - M.A.M College of Engineering, India , Visagavel, K Department of Mechanical Engineering - Knowledge institute of Technology, Salem, India , Selvakumar, A Department of Mechanical Engineering - Knowledge institute of Technology, Salem, India , Jayavel, C Department of Mechanical Engineering - Knowledge institute of Technology, Salem, India
Abstract :
Natural ventilation methods are far more efficient than the counter modern artificial methods and also it needs
no energy for the ventilation. In this proposed system, angle of air flow at the entry is changed and it results in
Air change per Hour (ACH) and the age of air changes. In accordance with the earlier studies, it has been
concluded that there is a significant impact due to geometrical configuration in the wind catcher. Density of
the air also supports this ventilation method, as cold air settles down due to high density and the hot air
escapes through the top of the opening due to its lighter density. During this work, wind catcher’s
openings is altered in several angles for the improvement in the distribution of air. The evaluation is based on
i) Downward air flow due to wind entry ii) Upward air flow due to temperature gradient. Geometry of the
testing room is 3.3m X3.3mX3.3m. The CFD results are validated based on upward air flow due to
temperature gradient using the simulation software ANSYS. In the inlet openings, aperture angles such as
30degree, 45degree, 60degree and 75degree are tested. Results are approached analytically and to support
analytical result simulation results are compared for better air velocity and uniform distribution.
