Journal ArticleDOI
Improved Drag Correlation for Spheres and Application to Shock-Tube Experiments
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TLDR
In this paper, the accuracy of the correlation between a sphere in compressible multiphase simulations and a shock-tube was evaluated using the recent shock tube experiments of Jourdan et al.Abstract:
MPIRICALcorrelationsforthequasi-steadydragcoef!cientofa sphere in compressible "ow have been presented by severalauthors (e.g., Henderson [1] and Loth [2]). Such correlations areneeded in numerical simulations of compressible multiphase "owsinvolving spherical particles. In this Note, the accuracy of thecorrelationsofHenderson[1]andLoth[2]areassessedusingthedatacollectedbyBaileyandStarr[3],andanimprovedcorrelationforthedrag coef!cient of a sphere in compressible "ow is developed. Theimproved correlation is validated for shock-particle interaction,using the recent shock-tube experiments of Jourdan et al. [4].read more
Citations
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Interaction of a planar shock wave with a dense particle curtain: Modeling and experiments
TL;DR: In this article, the interaction of a planar shock wave with a dense particle curtain is investigated through modeling and experiments, and a physics-based model is developed to account for interphase coupling.
Journal ArticleDOI
A multiphase model for compressible granular–gaseous flows: formulation and initial tests
Ryan W. Houim,Elaine S. Oran +1 more
TL;DR: In this paper, a model for predicting the behavior of a compressible flow laden with shocks interacting with granular material has been developed and tested, consisting of two sets of coupled Euler equations, one for the gas phase and the other for the granular phase.
Journal ArticleDOI
Importance of unsteady contributions to force and heating for particles in compressible flows: Part 1: Modeling and analysis for shock–particle interaction
TL;DR: In this paper, a model that includes unsteady contributions to force and heating is proposed to investigate particle interactions with a planar shock wave and a spherical shock wave, and the peak values and the net effects of unsteedy contributions are used to measure their importance.
Journal ArticleDOI
Unsteady effects in dense, high speed, particle laden flows
TL;DR: In this article, a two-dimensional (2D) model is proposed to model high-speed non-compacted multiphase flows in variable phase turbines, explosions, and ejector nozzles.
Journal ArticleDOI
Equation of motion for a sphere in non-uniform compressible flows
TL;DR: In this article, a particle equation of motion can be considered as the compressible extension of the Maxey-Riley-Gatignol equation of Motion and it incorporates interesting physics that arises from the combined effects of inhomogeneity and compressibility.
References
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Journal ArticleDOI
Drag Coefficients of Spheres in Continuum and Rarefied Flows
TL;DR: In this article, the effect on drag of a temperature difference between the sphere and the gas is incorporated, which simplifies in the limit to certain equations derived from theory, and which offers significantly improved agreement with the experimental data.
Journal ArticleDOI
Compressibility and Rarefaction Effects on Drag of a Spherical Particle
TL;DR: In this article, a review of compressibility and rarefaction effects on spherical particle drag was conducted based on existing experimental data, theoretical limits, and direct simulation Monte Carlo method results.
Journal ArticleDOI
Importance of unsteady contributions to force and heating for particles in compressible flows: Part 1: Modeling and analysis for shock–particle interaction
TL;DR: In this paper, a model that includes unsteady contributions to force and heating is proposed to investigate particle interactions with a planar shock wave and a spherical shock wave, and the peak values and the net effects of unsteedy contributions are used to measure their importance.
Journal ArticleDOI
Modeling of the unsteady force for shock-particle interaction
TL;DR: In this article, a simple model based on the work of Parmar et al. is proposed for the unsteady force in the flow field behind the shock wave. But the model is not suitable for the dynamics of the interaction between a particle and a wave.