MODELING OF NITROGEN AND OXYGEN RECOMBINATION ON PARTIAL CATALYTIC SURFACES

被引:48
作者
DEUTSCHMANN, O
RIEDEL, U
WARNATZ, J
机构
[1] Institut für Technische Verbrennung, Universität Stuttgart, Stuttgart
来源
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME | 1995年 / 117卷 / 02期
关键词
HIGH-TEMPERATURE PHENOMENA; REACTING FLOWS; SPACE POWER SYSTEMS;
D O I
10.1115/1.2822549
中图分类号
O414.1 [热力学];
学科分类号
摘要
In connection with recombination coefficients derived from experimental data described in the literature, a reaction scheme including detailed rate expressions for O and N atom recombination on the surface of re-entry vehicles. is established, consisting of elementary reaction steps. To validate the reaction mechanism derived, surface chemistry and fluid mechanical processes are coupled assuming a one-dimensional stagnation flow field. A quantitative agreement is achieved between recombination coefficients resulting from the numerical computations and those calculated from experiments. The temperature dependence of the recombination coefficient is explained by elementary reaction steps. Furthermore,the reaction scheme established is implemented in a two-dimensional Navier-Stokes code computing the re-entry flow around a simple geometry to show the importance of a detailed modeling of sufrace reactions.
引用
收藏
页码:495 / 501
页数:7
相关论文
共 37 条
[1]  
[Anonymous], 1976, US STANDARD ATMOSPHE
[2]  
BREEN J, 1973, NASA CR134124 CONTR
[3]  
CHRISTMANN K, 1991, INTRO SURFACE PHYSIC
[4]  
Coltrin M. E., 1991, SAND918003 SAND NAT SAND918003 SAND NAT
[5]  
COLTRIN ME, 1991, SAND908003B SAND NAT
[6]   ONE-STEP AND EXTRAPOLATION METHODS FOR DIFFERENTIAL-ALGEBRAIC SYSTEMS [J].
DEUFLHARD, P ;
HAIRER, E ;
ZUGCK, J .
NUMERISCHE MATHEMATIK, 1987, 51 (05) :501-516
[7]   A NUMERICAL-MODEL OF THE FLOW AND HEAT-TRANSFER IN A ROTATING-DISK CHEMICAL VAPOR-DEPOSITION REACTOR [J].
EVANS, G ;
GREIF, R .
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1987, 109 (04) :928-935
[8]  
Fletcher C. A., 1988, COMPUTATIONAL TECHNI, V2
[9]  
Grady DE, 1991, SAND911474C
[10]  
GRCAR JF, 1986, 21 S INT COMB COMB I, P1773