scholarly journals Theoretical and numerical studies of a vortex-airfoil interaction problem

1986 ◽  
Author(s):  
T.-M. HSU ◽  
J. WU
Keyword(s):  
Numerical Studies ◽  
Interaction Problem

Experimental, theoretical, and numerical studies on the response of square plates subjected to blast loading

2011 ◽  
Vol 46 (8) ◽  
pp. 805-816 ◽  
Author(s):  
K H Safari ◽  
J Zamani ◽  
S M R Khalili ◽  
S Jalili
Keyword(s):  
Blast Wave ◽  
Failure Modes ◽  
Scaling Law ◽  
Blast Loading ◽  
Material Failure ◽  
Perfectly Plastic ◽  
Numerical Studies ◽  
Fluid Solid Interaction ◽  
Interaction Problem ◽  
Dynamic Plasticity

This article presents the results of experimental and analytical studies on the response of steel and aluminium square plates with different thicknesses subjected to blast loading. Based on the blast wave details and the scaling law for explosions, a method of determining the blast load is proposed in which ballistic pendulums do not need to be utilized for obtaining the blast wave impulses. The loads applied to the plates are assumed to be the quasi-exponential pressure pulses, which are the same as the explosion overpressures. The theoretical solutions are presented using a rigid, perfectly plastic idealization and are exact within the context of dynamic plasticity. The dynamic energy imparted to structures can cause material failure. The presented investigation considers such a failure for fully clamped plates subjected to a blast loading idealized as an initial velocity distributed uniformly throughout the area. The predicted deflections and general failure modes of the plates are presented and compared with experimental results. Moreover, a numerical simulation is carried out by modelling an FSI (fluid–solid interaction) problem. Results are compared with each other and a better agreement between numerical results with experimental ones is observed.

scholarly journals Numerical Simulations of Particle Sedimentation Using the Immersed Boundary Method

2015 ◽  
Vol 18 (2) ◽  
pp. 380-416 ◽  
Author(s):  
Sudeshna Ghosh ◽  
John M. Stockie
Keyword(s):  
Immersed Boundary Method ◽  
Mass Density ◽  
Boussinesq Approximation ◽  
Solid Particles ◽  
Immersed Boundary ◽  
Particle Sedimentation ◽  
Numerical Studies ◽  
Boundary Method ◽  
Circular Particle ◽  
Interaction Problem

AbstractWe study the settling of solid particles in a viscous incompressible fluid contained within a two-dimensional channel, where the mass density of the particles is greater than that of the fluid. The fluid-structure interaction problem is simulated numerically using the immersed boundary method, where the added mass is incorporated using a Boussinesq approximation. Simulations are performed with a single circular particle, and also with two particles in various initial configurations. The terminal particle settling velocity and drag coefficient correspond closely with other theoretical, experimental and numerical results, and the particle trajectories reproduce the expected behavior qualitatively. In particular, simulations of a pair of interacting particles similar drafting-kissing-tumbling dynamics to that observed in other experimental and numerical studies.

Experimental and numerical studies of radiative shocks

2006 ◽  
Vol 133 ◽  
pp. 1013-1017 ◽  
Author(s):  
C. Michaut ◽  
L. Boireau ◽  
T. Vinci ◽  
S. Bouquet ◽  
M. Koenig ◽  
...  
Keyword(s):  
Radiative Shocks ◽  
Numerical Studies

Numerical Studies on Behavior of Lorentz-Force-Applied Boundary Layer in Supersonic Flow

2009 ◽  
Vol 129 (6) ◽  
pp. 831-839
Author(s):  
Keisuke Udagawa ◽  
Sadatake Tomioka ◽  
Hiroyuki Yamasaki
Keyword(s):  
Boundary Layer ◽  
Supersonic Flow ◽  
Lorentz Force ◽  
Numerical Studies
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