CFD Computer Simulation Consultant

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Center for Computational Fluid Dynamics

CFD Computer Simulation Consultant

Dena Hendriana, Sc.D
dena.hendriana@sgu.ac.id
dhendria@gmail.com
HP: +(62) 812 1371 5844
(WA message or Call)
www.CenterForCFD.com

Address:
Alam Sutera
Tangerang 15143
Banten - Indonesia

Need Help on Analyzing and Optimizing Your Products Or Industrial Processes?......

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The purpose of Air Circulation Analysis for a building :

• To minimize air recirculation inside the building.
• To have enough fresh air entering the building.
• To minimize heat traps inside the building.
• To predict air temperature and velocity distribution inside the building which is related to the comfort of the occupants inside the building.

Optimizing air circulation in a building will improve comfort for the occupants. Heat traps in a building will increase air temperature inside the building. In a large building such as a factory, heat from machineries and people inside the building needs to be removed by air circulation. If the airflow inside the building is recirculating, the heat will stay inside the building and air temperature will increase. The solution for this is to have a clean and nice one uniform direction flow with good airflow entering and leaving the building. With this situation, fresh air will reach all the areas inside the building.

Unorganized internal fans with non-uniform airflow directions tends to create air recirculations and heat traps, see above image. Two of internal fans can make complete air recirculating unintentionally and the heat from the machineries will go around covering large area in the building. Fresh air will not enter the building nicely due to conflicting fan directions. The solution to fix the situation is to reorient all the internal fans into one-direction flow.

Natural convection can help to reduce air temperature and increase fresh air circulation in a house. Design to encourage natural convection with opening on the lower-end and upper-end to cool heated roof can improve comfort inside the house. This is called chimney effect. With enough roof angle, natural convection will be established with inlet flow coming from lower-end opening and outlet flow at the upper-end opening.

Higher ceiling position will also help to reduce the heat effect from the roof. It has been analized that triangle shaped house will provide better comfort to the occupants inside the house than regular shaped house. This triangle shaped house will have nice natural convection under the roof and with high ceiling position.

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