A numerical prediction is presented for an axisymmetric buoyant air jet discharge vertically downward into a room. An algebraic stress model was used to close the mean transport equations which were then solved using the finite-volume method. The numerical method tracked the initial development of the jet. The negative buoyancy leads to flow reversal; the resultant flow pattern resembles an inverted fountain. The recirculation associated with the fountain has significant implications for the level of thermal mixing achieved by the jet.
KEYWORDS: calculating, turbulent flow, buoyancy, air jets, vertical, rooms, recirculating, air movement, air flow, heat flow, warm air heating
Citation: Symposium, ASHRAE Trans. 1994, Vol.100, Part 2
Product Details
- Published:
- 1994
- File Size:
- 1 file , 780 KB
- Product Code(s):
- D-17522
