摘要:

The results of experimental and theoretical studies of streamline deflection in diffusion flames are presented for approximately streamwise flames stabilised on a Parker-Wolf hard burner. It is shown that both the displacement of the dividing streamline from the flame sheet and the phenomenon of streamline refraction through the flame sheet can be predicted at least qualitatively by a simple linearised model for the diffusion flame in Oseen flow, in which only the irrotational pressure, temperature and composition waves are considered. Although this treatment involves the description of flame properties in terms of disturbances from freestream values, essentially the same results are obtained by linearisation about flame sheet properties. The question is left open whether the present mechanism for streamline refraction is that which leads to transfer of fuel or oxidant across the base of the flame close to extinction, eventually leading to flame lift and complete extinction.

ISSN:0010-2202    

DOI:10.1080/00102207208952314

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

摘要:

The slow combustion ofn-pentane has been studied in a single pulse chemical shock tube. The yields of oxygenated products are similar in many respects to those found in static systems, and as the reactions in a shock tube are entirely homogeneous, these products, including ketones, are formed in the gas phase and not by reactions at the wall.

ISSN:0010-2202    

DOI:10.1080/00102207208952315

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

摘要:

The problem of opposed-jet diffusion flame is considered for general Lewis numbers. The solutions are obtained by using Modified Flame Surface Theory and Extinction—Ignition characteristics have been brought out. Analysis shows that the gases with high Lewis numbers are preferable for the purpose of flame stabilization.

ISSN:0010-2202    

DOI:10.1080/00102207208952316

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

摘要:

The results of an earlier paper on the behavior of the boundary layer at an axisymmetric stagnation with hydrogen injection into a hot external airstream are extended to span the entire range from essentially frozen to essentially equilibrium flow. This extension is made possible by the employment of finite difference methods; the accurate treatment of the boundary conditions at “infinity,” the differencing technique employed and the formulation resulting in block tri-diagonal matrices are slight variants in the present work.

ISSN:0010-2202    

DOI:10.1080/00102207208952317

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

摘要:

Gas temperature, carbon monoxide, and nitric oxide concentration profiles measured as a function of axial and radial position inside an Allison J-33 combustor with unheated inlet air are reported. In addition, the isolated effects of combustor pressure, overall equivalence ratio, and air flow rate on combustor exit plane emissions are investigated. A consistent model of the combustion process in this combustor is presented on the basis of the results.

ISSN:0010-2202    

DOI:10.1080/00102207208952318

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

摘要:

New measurements are reported in the region of the third explosion limit in the hydrogen-oxygen system. Detailed studies have been made of the effects of temperture, mixture composition and vessel diameter on the third limit pressure. These results have been interpreted in terms of the chemical processes occurring and of the Frank-Kamenetskii theory of thermal explosions.

ISSN:0010-2202    

DOI:10.1080/00102207208952319

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

ISSN:0010-2202    

DOI:10.1080/00102207208952320

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor