Behavior of obstructed square buoyant vertical jets in static ambient (I)—verification of mathematical model and numerical method
- Resource Type
- Original Paper
- Authors
- Huai Wen-xin / 槐文信; Fang Shen-guang / 65B9;神光; Dai Hui-chao / 戴会超
- Source
- Applied Mathematics and Mechanics. May 2006 27(5):645-652
- Subject
- buoyant jets
square orifice
obstructed jet
three-dimensional model
dilution
O358
76D25
- Language
- English
- ISSN
- 0253-4827
1573-2754
Some experiments were made for the buoyant jet from a square orifice with a square disc placed on it in static ambient and concentration along the axis in self-similar area behind disc was measured. And at the same time a three-dimensional mathematical model was established to simulate the whole flowing under different conditions. All the results predicted by the numerical calculation were substantiated by the experiments. The results were compared with experiential formula for obstructed round buoyant vertical jets in static ambient and it was found that the two concentration distributions had good accordance. Star shape of temperature isolines on cross-sections in the near areas from the disc was found and it was a very special figure for obstructed square buoyant vertical jets with a square disc. The shape will transform to concentric circles gradually alike to the round buoyant vertical jet in self-similar area with increasing of the distance from the disc.