|Published (Last):||25 June 2007|
|PDF File Size:||8.72 Mb|
|ePub File Size:||8.82 Mb|
|Price:||Free* [*Free Regsitration Required]|
The time-varying displacement of the tip of the plate is the superimposition of two dominant frequencies, which correspond to the first and second modes of the natural frequency of a vibrating plate.
Blue Peter Book 29 Annual
In order to demonstrate the fidelity of the solver and to investigate the coupled physics of the shock—structure interaction for a thin elastic plate, we employed the solver to simulate a 6. Abstract In this study, we report moden development and application of a fluid—structure interaction FSI solver for compressible flows with modern compressible flow pdf download flow-induced deformation of the structure. The structural solver was validated according to a canonical elastostatics problem.
In this study, we report the development and application of a fluid—structure interaction FSI solver for compressible flows with large-scale flow-induced deformation of the structure. The plate oscillates under the influence of blast loading and the restoration of elastic forces.
The FSI solver was validated based on comparisons with published measurements and simulations of the large-scale deformation of a thin elastic steel panel subjected to blast loading in a shock tube. We discuss the coupling between the nonlinear dynamics of the plate and blast loading.
Check if you have access psf your login modern compressible flow pdf download or your institution. The solver correctly predicted the oscillating behavior of the tip of the panel with reasonable fidelity and the computed shock wave propagation was qualitatively consistent with the published results.
Using numerical schlieren, the shock front copressible, Mach reflection, and vortex shedding at modern compressible flow pdf download tip of the plate were visualized during the impact of the shock wave on the plate. The second order spatial accuracy of the flow solver was established in a grid refinement study.
The initial conditions for the blast were taken from previously reported field tests. The flow solver is based on a higher-order finite-difference method using a Cartesian grid, where it employs the ghost-cell methodology to impose boundary conditions on the immersed boundary. Higher-order accuracy near the immersed boundary is achieved by combining the ghost-cell approach with a weighted least squares error method based on a higher-order approximate polynomial.
The FSI solver utilizes a partitioned approach to strongly couple a sharp interface immersed boundary method-based commpressible solver with an open-source finite-element structure dynamics solver. Recommended articles Citing articles 0.
The effects of the material properties and length of the plate on the flow-induced deformation are briefly discussed. The proposed FSI solver is a versatile computational tool for simulating the modern compressible flow pdf download of a blast wave on fllw elastic structures and the results presented in this study may facilitate the design of thin structures subjected to realistic blast loadings.
We present validations for compressibld canonical acoustic wave scattering on a rigid cylinder at a low Mach number and for flow past a circular cylinder at a moderate Mach number.