摘要:

A recent experimental measurement of the Chapman‐Jouguet isentrope of the solid explosive Composition B, together with the experimental detonation velocityvsinitial density curve, give considerable information about the equation of state of the detonation products. With the aid of some thermodynamic assumptions, a simple explicit form is obtained for the energy as a function of pressure and volume.

ISSN:0031-9171    

DOI:10.1063/1.1724377

出版商:AIP    

年代:1958

数据来源: AIP

摘要:

At the high pressures induced by explosive attack, metals are assumed to behave like nonviscous, non‐heat‐conducting fluids. Within these assumptions, intensity and duration of explosively induced nonuniform oblique shocks are calculated by the method of characteristics for aluminum and copper in those cases involving supersonic flow both in the metal and in the explosive gas. Flow in both metal and explosive product gas is assumed to be isentropic even in the presence of shock waves. When a three‐parameter equation of state is used for the gas, an arbitrary assumption must be made concerning the magnitude of one of these parameters, since pressure, density, and sound speed are known only for the Chapman‐Jouguet point for the explosive gas. Reasonableness of this assumption is tested by comparing the results of the calculation with experiment. Results for oblique shocks confirm the results obtained previously for plane shocks in regard to the equation of state of the gas.

ISSN:0031-9171    

DOI:10.1063/1.1724378

出版商:AIP    

年代:1958

数据来源: AIP

摘要:

A statistical formalism for describing the behavior of sprays is presented, which includes the effects of droplet growth, the formation of new droplets, collisions, and aerodynamic forces. Criteria for the efficiency of impinging jet atomization are developed. It is shown that if the incident jets have a size distribution of a generalized Rosin‐Rammler type, then the resulting spray belongs to the same class of distributions. The size history of evaporating sprays is also obtained from the theory. A spray combustion analysis given by Probert is extended to include more general size distributions and the effects of droplet interactions and the relative motion of the droplets and the fluid. It is shown that the over‐all spray evaporation rate is largest for uniform sprays.

ISSN:0031-9171    

DOI:10.1063/1.1724379

出版商:AIP    

年代:1958

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.1724381

出版商:AIP    

年代:1958

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.1724382

出版商:AIP    

年代:1958

数据来源: AIP

ISSN:0031-9171    

DOI:10.1063/1.1724383

出版商:AIP    

年代:1958

数据来源: AIP