摘要:

The kinetic equation governing the probability density function of the fluid elements in velocity space and describing a multi‐length scale turbulence field is employed to analyze an initially uniform and homogeneous turbulence which is characterized by two different significant length scales. The mixing and decay of this turbulence field have been analyzed and the generation and the subsequent behavior of the apparent length scale have been also investigated.

ISSN:0253-3839    

DOI:10.1080/02533839.1978.9676608

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

Combustion flame temperature profiles can be obtained from a single‐line‐of‐sight multi‐frequency set of radiance measurements. Nonlinear inversion techniques, developed mostly for satellite meterology, are used and compared in this highly nonlinear application. It is found that accuracy and rapid convergence depend critically on the availability of transmittance kernels featuring sharp and well spaced maxima. A systematic use of pivotal techniques is also necessary. Several typical flame configurations are tested, including the practical case where the unknown concentration profile is also to be retrieved.

ISSN:0253-3839    

DOI:10.1080/02533839.1978.9676609

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

For batchwise thermally‐initiated bulk polymerization of styrene, the maximum principle is applied to search for an optimal temperature policy, by which the reaction time is minimal, for the system having predetermined average molecular weight and monomer conversion at end time and upper temperature limit. A set of simple equations for calculating the optimal temperature policy is obtained. Some numerical calculations are also presented.

ISSN:0253-3839    

DOI:10.1080/02533839.1978.9676610

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

In this experiment the effects of silica content, sintering time, and sintering temperature on the microstructure and magnetic properties of a ferrite, Ni032Zn068Fe2O4, were studied.

ISSN:0253-3839    

DOI:10.1080/02533839.1978.9676611

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

The purpose of this article is to present three matrix theoremes pertaining to the analysis of electrical multiconductor transmission lines. In principle, the formulations are also applicable to coupled mechanical systems.

ISSN:0253-3839    

DOI:10.1080/02533839.1978.9676612

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

General methods are developed for the analysis of linear and non‐linear networks by the use of the block pulse functions, which are related to the Walsh functions by a linear transformation. For both cases, piecewise‐constant solutions are obtained. For the time‐varying systems, the piecewise‐constant solutions are obtained by the solution of a set of recurrence linear algebraic equations. For the nonlinear systems, a set of recurrence nonlinear algebraic equations has to be computed successively. Illustrative examples are accompanied by the exact or numerical solutions for comparison.

ISSN:0253-3839    

DOI:10.1080/02533839.1978.9676613

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

An analytical model for supersonic air ejector and the basic theory of ejector have been reviewed and used to obtain the performance characteristics of nozzles with different area ratios. The complete performance curve has been established. The entrainment ratio equation has been varified by experiments. In conjunction with an experimentally‐determined compression efficiency correlation, it is able to provide a simple and rapid way for designing.

ISSN:0253-3839    

DOI:10.1080/02533839.1978.9676614

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

This work considers the application of Wilson and NRTL equations in the multicomponent VLE prediction. We emphasize the critical comparison of partially miscible solution treatment by these two equations. Results revealed NRTL equation performed slightly better than the Wilson equation in data credibility so far as the systems examined are concerned. Estimation of optimum NRTL parameters requires further exploration. Optimization methods of pattern search, gradient search and golden section were employed in this study. All of the computations were performed on an IBM 1130 digital computer.

ISSN:0253-3839    

DOI:10.1080/02533839.1978.9676615

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

摘要:

Silver electrodes were made by the sintering method and by the chemically prepared method. Their charging and discharging performances were compared.

ISSN:0253-3839    

DOI:10.1080/02533839.1978.9676616

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor

ISSN:0253-3839    

DOI:10.1080/02533839.1978.9676617

出版商:Taylor & Francis Group    

年代:1978

数据来源: Taylor