摘要:

An expression is developed for the relaxation time for the approach to equilibrium for the dissociation of a diatomic gas behind a shock wave. This expression shows the importance of the variation of temperature behind a shock on the rate of approach to equilibrium. Numerical calculations of the shock wave profile in 02for two different dissociation mechanisms show that the relaxation time analysis is only appropriate for the description of the dissociation within a few percent of equilibrium. The calculations also show that ozone is not an effective intermediate for the shock dissociation of 02and that it is impossible to define a relaxation time for the over‐all dissociation process which is inversely proportional to pressure or density.

ISSN:0031-9171    

DOI:10.1063/1.1724348

出版商:AIP    

年代:1958

数据来源: AIP

摘要:

The first‐order nodal expansion of potentials of average force and distribution functions, obtained in a previous publication, is summed over again and converted into a second‐order expansion. The method is generalized, and recursion formulas are given fornth order expansions of potentials of average force in terms of ``sheaf potentials.'' These latter are seen to conform exactly to the Kirkwood superposition principle. The feasibility of actual calculations is briefly discussed. Possible applicability to quantum‐mechanical problems (Feynman diagrams) is noted.

ISSN:0031-9171    

DOI:10.1063/1.1724349

出版商:AIP    

年代:1958

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.1724350

出版商:AIP    

年代:1958

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.1724351

出版商:AIP    

年代:1958

数据来源: AIP