NDLI: Interaction of Shock and Expansion Wave With Solid Particles in Supersonic Flows

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Dolatabadi, Ali Mostaghimi, Javad Pershin, Valerian
Copyright Year	2002
Abstract	Interaction of solid particles with shock and expansions in supersonic flows is analyzed. In this analysis, a dense cloud of solid particulates is modeled by using a fully Eulerian approach. The dispersed flow and the gas flow were considered in the Eulerian frame whereby most of the physical aspects of the gas-particle flow can be incorporated. In addition to the momentum and energy exchanges in the form of source terms appearing in the governing equations, the two phases were strongly coupled by considering the volume fraction of the particulate phase in the equations. The simulation performed for a High Velocity Oxy-Fuel (HVOF) process under typical operating conditions in which the powder loading is high and the two-phase flow is not dilute near the injection port. The simulations showed large variations in the flow regime in the region that most of the particles exist. Unlike the results corresponding to the Lagrangian approach, the flow becomes subsonic near the centerline and the drag force decreases significantly since the relative Mach number is small. The validation experiments showed that the variation of flow regime by changing the relative Mach number could significantly change the particle drag force, and consequently process efficiency.
Sponsorship	Fluids Engineering Division
Starting Page	399
Ending Page	407
Page Count	9
File Format	PDF
ISBN	0791836169
DOI	10.1115/FEDSM2002-31223
e-ISBN	0791836002
Volume Number	Volume 2: Symposia and General Papers, Parts A and B
Conference Proceedings	ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
Language	English
Publisher Date	2002-07-14
Publisher Place	Montreal, Quebec, Canada
Access Restriction	Subscribed
Subject Keyword	Supersonic flow Simulation Gas flow Two-phase flow Particulate matter Momentum Drag (fluid dynamics) Shock (mechanics) Fuels Waves Flow (dynamics) Mach number
Content Type	Text
Resource Type	Article

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