THE EFFECTS OF DAMKOHLER NUMBER IN A TURBULENT SHEAR-LAYER

被引：35

作者：

MUNGAL, MG

FRIELER, CE

机构：

[1] California Inst of Technology,, Pasadena, CA, USA, California Inst of Technology, Pasadena, CA, USA

来源：

COMBUSTION AND FLAME | 1988年 / 71卷 / 01期

关键词：

FLOW OF FLUIDS - Turbulent - FLUID MECHANICS - FLUORINE - Concentration - HYDROGEN - Concentration - NITROGEN;

D O I：

10.1016/0010-2180(88)90102-2

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A chemical reaction for which the reaction rate can be varied is studied in a fully developed, two-dimensional, turbulent mixing layer. The layer is formed between two nitrogen streams, one carrying low concentrations of fluorine and the other hydrogen and nitric oxide. For fixed concentrations of fluorine and hydrogen and for nitric oxide concentrations that are small fractions of the fluorine concentration, the heat release is fixed but the overall reaction rate is controlled by the nitric oxide concentration. Therefore, for fixed flow conditions, the nitric oxide concentration determines the ratio of the reaction rate to the mixing rate and hence a Damkohler number. For large values of this ratio, the amount of product, at a given downstream location, measured by the mean temperature rise, is independent of the reaction rate, i. e. , the reaction is mixing limited.

引用

页码：23 / 34

页数：12

共 19 条

[1]

Baulch D.L., 1981, J PHYS CHEM REF D S1, V10

[2]

Betchov R., 1948, P K NED AKAD WETENSC, V51, P721

[3] STRUCTURE IN TURBULENT MIXING LAYERS AND WAKES USING A CHEMICAL-REACTION [J].