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Title: Integrated rheology model: Explosive Composition B-3

Composition B-3 (Comp B-3) is a high explosive formulation composed of 60/40wt% RDX (1,3,5-trinitroperhydro-1,3,5-triazine) /TNT (2,4,6 trinitrotoluene). Above approximately 78°C this formulation partially melts to form a multiphase system with solid RDX particles in a molten TNT matrix. This multiphase system presents a number of phenomena that influence its apparent viscosity. In an earlier study explosive Composition B-3 (Comp B-3, 60/40wt% RDX/TNT) was examined for evidence of yield stress using a non-isothermal falling ball viscometer and a yield stress model was proposed in this paper. An integrated viscosity model suitable for use in computational fluid dynamics (CFD) simulations is developed to capture the transition from a heterogeneous solid to a Bingham viscoplastic fluid. This viscosity model is used to simulate the motion of imbedded spheres falling through molten Comp B-3. Finally, comparison of the simulations to physical tests show agreement between the positions predicted by the model and the measured locations of the spheres as a function of temperature between 90C and 165C.
Authors:
ORCiD logo [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
LA-UR-17-31436
Journal ID: ISSN 0737-0652
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Journal of Energetic Materials
Additional Journal Information:
Journal Name: Journal of Energetic Materials; Journal ID: ISSN 0737-0652
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Bingham plastic; molten; multiphase flow; viscosity; yield stress
OSTI Identifier:
1441324

Davis, Stephen M., Zerkle, David K., Smilowitz, Laura B., Henson, Brian F., Suvorova, Natalya A., and Remelius, Dennis K.. Integrated rheology model: Explosive Composition B-3. United States: N. p., Web. doi:10.1080/07370652.2018.1451573.
Davis, Stephen M., Zerkle, David K., Smilowitz, Laura B., Henson, Brian F., Suvorova, Natalya A., & Remelius, Dennis K.. Integrated rheology model: Explosive Composition B-3. United States. doi:10.1080/07370652.2018.1451573.
Davis, Stephen M., Zerkle, David K., Smilowitz, Laura B., Henson, Brian F., Suvorova, Natalya A., and Remelius, Dennis K.. 2018. "Integrated rheology model: Explosive Composition B-3". United States. doi:10.1080/07370652.2018.1451573.
@article{osti_1441324,
title = {Integrated rheology model: Explosive Composition B-3},
author = {Davis, Stephen M. and Zerkle, David K. and Smilowitz, Laura B. and Henson, Brian F. and Suvorova, Natalya A. and Remelius, Dennis K.},
abstractNote = {Composition B-3 (Comp B-3) is a high explosive formulation composed of 60/40wt% RDX (1,3,5-trinitroperhydro-1,3,5-triazine) /TNT (2,4,6 trinitrotoluene). Above approximately 78°C this formulation partially melts to form a multiphase system with solid RDX particles in a molten TNT matrix. This multiphase system presents a number of phenomena that influence its apparent viscosity. In an earlier study explosive Composition B-3 (Comp B-3, 60/40wt% RDX/TNT) was examined for evidence of yield stress using a non-isothermal falling ball viscometer and a yield stress model was proposed in this paper. An integrated viscosity model suitable for use in computational fluid dynamics (CFD) simulations is developed to capture the transition from a heterogeneous solid to a Bingham viscoplastic fluid. This viscosity model is used to simulate the motion of imbedded spheres falling through molten Comp B-3. Finally, comparison of the simulations to physical tests show agreement between the positions predicted by the model and the measured locations of the spheres as a function of temperature between 90C and 165C.},
doi = {10.1080/07370652.2018.1451573},
journal = {Journal of Energetic Materials},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {3}
}