An improved continuum mixture model for wave propagation in fibrous composites

1998 ◽  
Vol 104 (2) ◽  
pp. 867-873 ◽  
Author(s):  
Adnan H. Nayfeh ◽  
Wael G. Abdelrahman
Keyword(s):  
Wave Propagation ◽  
Mixture Model ◽  
Fibrous Composites ◽  
Continuum Mixture Model

scholarly journals Ultrasonic wave propagation in multilayered fibrous composites

1987 ◽  
Vol 82 (S1) ◽  
pp. S20-S20
Author(s):  
Adnan H. Nayfeh ◽  
Dale E. Chimenti
Keyword(s):  
Wave Propagation ◽  
Ultrasonic Wave ◽  
Fibrous Composites ◽  
Ultrasonic Wave Propagation

Experimental Validation of Continuum Mixture Model for Binary Alloy Solidification

1997 ◽  
Vol 119 (4) ◽  
pp. 783-791 ◽  
Author(s):  
M. J. M. Krane ◽  
F. P. Incropera
Keyword(s):  
Mixture Model ◽  
Solidification Process ◽  
Scaling Analysis ◽  
Permeability Model ◽  
Alloy Solidification ◽  
Permeability Constant ◽  
Dendritic Array ◽  
Continuum Mixture Model ◽  
Composition Profiles ◽  
Alloy Microstructure

Experiments were performed with binary metal alloys to validate a continuum mixture model for alloy solidification. Ingots of two compositions, Pb-20%Sn and Pb-40%Sn, were cast in a permanent mold, and the solidification process was simulated. Temperature histories were measured during casting, and composition profiles were found in the solidified ingot. Dendritic arm spacings were found from optical micrographs of the alloy microstructure and used to determine a constant in the Blake-Kozeny submodel for the mushy zone permeability in the liquid-solid interaction term of the momentum equations. Scaling analysis from a previous work and a large uncertainty in the permeability constant suggested that predictions of the composition are extremely sensitive to the choice of a permeability model. Three simulations of each casting were performed using the permeability constant as a parameter, and measured temperatures and compositions were compared with predictions based on different model constants. In the region of the liquidus interface, where all of the significant advection of solute takes place, the results suggest that the Blake-Kozeny model based on measured dendritic arm spacings significantly underpredicts the resistance of the dendritic array to fluid flow.

A continuum mixture model of ice stream thermomechanics in the Laurentide Ice Sheet 1. Theory

1997 ◽  
Vol 102 (B9) ◽  
pp. 20599-20613 ◽  
Author(s):  
Shawn J. Marshall ◽  
Garry K. C. Clarke
Keyword(s):  
Mixture Model ◽  
Ice Sheet ◽  
Laurentide Ice Sheet ◽  
Ice Stream ◽  
Continuum Mixture Model

Approximate model for wave propagation in piezoelectric materials. II. Fibrous composites

1999 ◽  
Vol 85 (4) ◽  
pp. 2347-2354 ◽  
Author(s):  
Adnan H. Nayfeh ◽  
Jennifer J. Dong ◽  
Waseem Faidi
Keyword(s):  
Wave Propagation ◽  
Piezoelectric Materials ◽  
Approximate Model ◽  
Fibrous Composites

scholarly journals Shock structure for the seven-equation, two-phase continuum-mixture model

2021 ◽  
pp. 1-32
Author(s):  
John Bohdan Bdzil ◽  
Ashwani Kumar Kapila ◽  
Michael Patrick Hennessey
Keyword(s):  
Mixture Model ◽  
Shock Structure ◽  
Two Phase ◽  
Continuum Mixture Model
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