ISSN:0253-3839    

DOI:10.1080/02533839.1984.9676776

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

ISSN:0253-3839    

DOI:10.1080/02533839.1984.9676777

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

In this paper, referring to the experimental observation of Thomas and Pellon, the authors consider the possible features of the development of the inter‐ and intra‐molecular forces of polymer and monomer molecules in the reaction mixture. Then, a critical chain length is proposed to be a criterion for the loci of polymerization for the polymer molecules. The polymer molecules formed initially exist and react in the solution phase. As soon as they attain a chain length longer than the critical chain length, they will separate from the solution phase, and continue their reaction in the precipitation phase by the diffusion‐controlled process. The chain transfer to monomer reaction is suggested as the deactivation reaction for the precipitated polymer radicals. In the kinetic treatment, the unsteady‐state condition is applied for the precipitation phase, while the steady‐state assumption is used for the solution phase.

ISSN:0253-3839    

DOI:10.1080/02533839.1984.9676778

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

ISSN:0253-3839    

DOI:10.1080/02533839.1984.9676779

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

ISSN:0253-3839    

DOI:10.1080/02533839.1984.9676780

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

ISSN:0253-3839    

DOI:10.1080/02533839.1984.9676781

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

ISSN:0253-3839    

DOI:10.1080/02533839.1984.9676782

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

The objective of this work is to develop an approximate analytical solution for the transient ablation problem in a finite medium. The medium is subjected to time‐dependent boundary heat flux, i. e.,q0=atP, and with this refined integral technique, the complicated nonlinear problem is reduced to an initial value problem, which is then solved by the Runge‐Kutta method. Results are more accurate than with the classical heat balance integral method and also indicate that the dependence of the solution on the assumed temperature profile is much weaker than is the case with the classical integral method.

ISSN:0253-3839    

DOI:10.1080/02533839.1984.9676783

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

This article intends to present a general expression for Doppler effect and to show its influence on low‐altitude altimeters.

ISSN:0253-3839    

DOI:10.1080/02533839.1984.9676784

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

ISSN:0253-3839    

DOI:10.1080/02533839.1984.9676775

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor