Wilkins equation of state

P2) Pike Equation of State. See under Wilkins Equation of State and also in the paper by J.W.S. Allan B.D. Lamboum,... 

The PETN Detonation Pressure, P (also called the CJ Pressure), is shown as a function of packing density in Table 7 and in Fig 4. Note that the measured P values in Fig 4 lie quite close to the theoretical curve developed by Lee Homig (Ref 72), which is based on a Wilkin s type equation of state (see Vol 4, D294-L) with a Grueneisen ratio, r, for the detonation products, that is solely a function of specific volume. Shea et al obtained an effective T = 8.077 p-12.288 (Ref 74)... 

Detonation (and Explosion), Equations of State ]. Kury et al came to the conclusion that, on introducing an extra term into Wilkins equation, they can obtain a modification which is suitable for a range of pressures 1 to 500kbar and which gives results in fairly good agreement with exptl values. Their equation is described in item Z, under "Detonation, Equations of State in ... 

A L consider their equation as a modification of Wilkins equation, but it also incorporates the data of Fickett-Wood (Ref 15, p 53) and Pike (Ref 15, pp 53-4) equations of state... 

Accdg to Dunkle (Ref 17), this equation can serve for detonation pressures above 150-200kilobars, but at lower and higher pressures the equation proves to be inadequate. Modifications were proposed to adjust to the situation, among them that of M.L. Wilkins et al in the paper "The Equation of State of PBX 9404 and LX04-01 (Ref 14, p 769 78). Wilkins equation is ... 

N) C.L. Mader, "Detonation Properties of Condensed Explosives Using BeCker-Kistiakowsky-Wilson Equation of State , LASL Rept LA-2900(1963) O) M. Lutzky, "The Flow Field Behind a Spherical Detonation in TNT Using the Landau-Stanyukovich Equation of State for Detonation Products , USNavalOrdnanceLaboratory, White Oak, Md, NOLTR 64-40(1964) (The equation discussed in Rept is the one modified by Zel dovich Kompaneets and is referred to by Lutzky as "LSZK Equation of State ) Oi) M.L. Wilkins, Univ of Calif, LawrenceRadLab, Livermore, Calif, Rept UCRL-7797(1964) P) H. Hurwitz, "Calculation of the Detonation Parameters With... 

The Jones-Wilkins-Lee equation of state has been used to describe accurately the pressure-volume-energy behavior of the detonation products of expls in applications of metal acceleration. The parameters for TNT are available in comparison with other common expls (Ref 141)... 

Experimental method to measure the effectiveness of an explosive. The radial expansion on detonation of a metallic cylinder (usually copper) filled with a high explosive is observed. A streak camera or a laser method might be used. The detonation velocity is determined simultaneously, using for example time-of-arrival pins. The -> Equation of State (EOS) which is often the Jones-Wilkins-Lee (JWL) EOS of the detonation products is derived using Gurney theory. 

All reactive flow models require as a minimum two equations of state, one for the unreacted explosive and one for its reaction products a reaction rate law for the conversion of explosive to products and a mixture rule to calculate partially reacted states in which both explosive and products are present. The Ignition and Growth reactive flow model [60] uses two Jones-Wilkins-Lee (JWL) equations of state, one for the unreacted explosive and another one for the reaction products, in the temperature dependent form ... 

MAT HIGH EXPLOSIVE BURN as the key word is adopted in the code to describe explosive with Jones-Wilkins-Lee (JWL) equation of state to model the pressure generated by the expansion of the detonation product ... 

The JWL (Johns-Wilkins-Lee) equation of state (EOS), which is suited for hydrod5mamic of explosive detonation products, is employed as the EOS of TNT explosive in this study. The JWL EOS can be expressed as... 

Besides, on the basis of the cylinder test data, if the detonation parameters at the CJ point as the initial point of the products expansion are known, it is possible to deduce constants in the Jones-Wilkins-Lee equation (known as JWL equation of state) of the detonation products isentropic expansion. 

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