On the method of indirectly measuring gas and particulate phase velocities in shock induced dusty-gas flows

1993 ◽  
Vol 15 (1) ◽  
pp. 1-9
Author(s):  
G. D. Lock
Keyword(s):  
Gas Flows ◽  
Dusty Gas ◽  
Particulate Phase ◽  
Phase Velocities

An indirect method of measuring gas- and particulate-phase velocities of shock-induced dusty-gas flows

1992 ◽  
Vol 70 (2-3) ◽  
pp. 122-133
Author(s):  
James J. Gottlieb
Keyword(s):  
Phase Velocity ◽  
Mass Conservation ◽  
Time Of Arrival ◽  
Gas Flows ◽  
Dusty Gas ◽  
Particulate Phase ◽  
Two Phase ◽  
Gas Phases ◽  
Direct Measurements ◽  
Particulate Concentration

A method of indirectly measuring the temporally varying velocities of both the particulate and gas phases in the nonequilibrium region of a shock wave moving at constant speed in a dusty-gas mixture is described. This method is implemented by using experimental data from shock-induced air flows containing glass beads 40 μm in diameter in a dusty-gas shock-tube facility featuring a large horizontal channel 197 mm high by 76 mm wide with a special dust-injection device. Simultaneous measurements of the shock-front speed with time-of-arrival gauges, particulate concentration by light extinctiometry, and combined particulate concentration and gas density by beta-ray absorption are used in conjunction with two mass conservation laws to provide these indirect two-phase velocity measurements. Direct measurements of the particulate-phase velocity by laser-Doppler velocimetry are also presented for comparison, and the capability of the indirect velocity-measurement method is assessed.

Modeling of dusty gas flows due to plume impingement on a lunar surface

2021 ◽  
Vol 33 (5) ◽  
pp. 053307
Author(s):  
Arun K. Chinnappan ◽  
Rakesh Kumar ◽  
Vaibhav K. Arghode
Keyword(s):  
Lunar Surface ◽  
Gas Flows ◽  
Dusty Gas

scholarly journals Building Planets with Dusty Gas

2004 ◽  
Vol 213 ◽  
pp. 231-234
Author(s):  
S. T. Maddison ◽  
R. J. Humble ◽  
J. R. Murray
Keyword(s):  
Solar Nebula ◽  
Numerical Technique ◽  
Dynamical Evolution ◽  
Gas Flows ◽  
Dusty Gas ◽  
Dust Distribution ◽  
Self Gravity ◽  
Gas Medium

We have developed a new numerical technique for simulating dusty-gas flows. Our code incorporates gas hydrodynamics, self-gravity and dust drag to follow the dynamical evolution of a dusty-gas medium. We have incorporated several descriptions for the drag between gas and dust phases and can model flows with submillimetre, centimetre and metre size “dust”. We present calculations run on the APAC1 supercomputer following the evolution of the dust distribution in the pre-solar nebula.

scholarly journals Supersonic dusty-gas flows with Knudsen effect in interphase momentum exchange

2004 ◽  
Vol 20 (5) ◽  
pp. 465-470
Author(s):  
Wang Boyi ◽  
A. N. Osiptsov ◽  
L. A. Egorova ◽  
V. I. Sakharov
Keyword(s):  
Gas Flows ◽  
Dusty Gas ◽  
Momentum Exchange ◽  
Knudsen Effect

scholarly journals Towards the problem of hydrodynamic stability of plane-parallel dusty-gas flows

PAMM ◽  
2007 ◽  
Vol 7 (1) ◽  
pp. 4100017-4100018
Author(s):  
Alexander Osiptsov ◽  
Sergei Boronin
Keyword(s):  
Hydrodynamic Stability ◽  
Gas Flows ◽  
Dusty Gas ◽  
Plane Parallel

scholarly journals Hybrid Finite-Volume-Particle Method for Dusty Gas Flows

2017 ◽  
Vol 3 ◽  
pp. 139-180 ◽  
Author(s):  
Alina Chertock ◽  
Shumo Cui ◽  
Alexander Kurganov
Keyword(s):  
Finite Volume ◽  
Particle Method ◽  
Gas Flows ◽  
Dusty Gas

Analysis of Two-Phase Homogeneous Bubbly Flows Including Friction and Mass Addition

2004 ◽  
Vol 126 (1) ◽  
pp. 102-109 ◽  
Author(s):  
Marat Mor ◽  
Alon Gany
Keyword(s):  
Single Phase ◽  
Mathematical Formulation ◽  
Bubbly Flows ◽  
Wall Friction ◽  
Gas Flows ◽  
Propulsion Systems ◽  
Two Phase ◽  
Jet Propulsion ◽  
Flow Equations ◽  
Phase Velocities

The present work is a theoretical investigation of two-phase bubbly flows. The main objective is to get a better insight of the basic phenomena associated with such flows through nozzles via physical modeling and mathematical formulation. Introducing Mach number into the flow equations, we find novel, closed-form analytical solutions and expressions for homogeneous bubbly flows including the influence of wall friction and mass addition. The expressions obtained demonstrate an analogy to those of classical, single-phase gas flows. The study deals with homogeneous flows, however, its approach and results can also be applied to investigate flows with unequal phase velocities, to study instability phenomena, as well as to design and analyze water jet propulsion systems.

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