Tsuji flame

Tsuji, Ft. and Yamaoka, 1., Structure and extinction of near-limit flames in a stagnation flow, Proc. Combust. Inst., 19,1533,1982. 

Nagayama J, Takasuga T, Tsuji H. 2001. Contamination levels of brominated flame retardants, dioxins and organochlorine compounds in the blood of Japanese adults. BFR 113-116. 

Beginning with the innovative work of Tsuji and Yamaoka [409,411], various counter-flow diffusion flames have been used experimentally both to determine extinction limits and flame structure [409]. In the Tsuji burner (see Fig. 17.5) fuel issues from a porous cylinder into an oncoming air stream. Along the stagnation streamline the flow may be modeled as a one-dimensional boundary-value problem with the strain rate specified as a parameter [104], In this formulation complex chemistry and transport is easily incorporated into the model. The chemistry largely takes place within a thin flame zone around the location of the stoichiometric mixture, within the boundary layer that forms around the cylinder. 

In 1967 Tsuji and Yamaoka introduced the notion of using stagnation flow as an ideal way to study the structure of nonpremixed (diffusion) flames [410,411], The essential features of their experiment are illustrated in Fig. 17.5. Gaseous fuel issued radially outward from... 

Fig. 17.5 Illustration of the Tsuji and Yamaoka diffusion flame in the forward stagnation region of a porous cylinder [410,411].

A number of investigators have modeled the Tsuji and Yamaoka data [104]. In these investigations the flame was modeled as a semi-infinite stagnation flow, with the outer potential flow characterized by the velocity-gradient parameter a (see Section 6.3.1). For the cylindrical geometry, this characterization is correct in the neighborhood of the center stagnation-flow streamline. 

An alternative to the Tsuji and Yamaoka configuration is the planar opposed-flow configuration. In 1981 Hahn and Wendt [161,162] used parallel porous-metal plates to create an opposed-jet diffusion flame of methane and air in which they studied NO formation. They also developed a computational model that included complex chemical kinetics. The model used outer potential flows to characterize the strain field. 

H. Tsuji. Counterflow Diffusion Flames. Prog. Energy Combust. Sci., 8 93-119, 1982. 

H. Tsuji and I. Yamaoka. The Structure of Counterflow Diffusion Flames in the Forward Stagnation Region of a Porous Cylinder. Proc. Combust. Inst., 12 997-1005,1969. 

H. Tsuji and I. Yamaoka, An Experimental Study of Extinction of Near-Limit Flames in a Stagnation Flow, Colloque International Berthe lot-Vieille-Mallard-le Chatelier, First Specialists Meeting International) of The Combustion Institute, Pittsburgh The Combustion Institute, 1981, 111-116. 

Yamaoka, I., and H. Tsuji. 1991. The effect of back diffusion of intermediate hydrogen on methane-air and propane-air flames diluted with nitrogen in a stagnating flow. Combustion Flame 86 135-46. 

Tsuji T, Korematsu M (1975) Highly flame-retardant shaped articles and method for preparing the same. In Google Patents... 

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