TITLE

Alignment of dust particles by ion drag forces in subsonic flows

AUTHOR(S)
Piel, Alexander
PUB. DATE
July 2011
SOURCE
Physics of Plasmas;Jul2011, Vol. 18 Issue 7, p073704
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The role of ion drag forces for the alignment of dust particles is studied for subsonic flows. While alignment by wake-field attraction is a well known mechanism for supersonic flows, it is argued here that ion-scattering forces become more important in subsonic ion flows. A model of non-overlapping collisions is introduced and numerical results are discussed. For typical conditions of dusty plasma experiments, alignment by drag forces is found strong enough to overcome the destabilizing force from Coulomb repulsion between dust particles. It turns out that the major contribution to the horizontal restoring force originates from the transverse momentum transfer, which is usually neglected in ion drag force calculations because of an assumed rotational symmetry of the flow.
ACCESSION #
63542401

 

Related Articles

  • Scattering and extinction of ion beams in a dusty plasma device. Nakamura, Y. // Physics of Plasmas;Dec2001, Vol. 8 Issue 12, p5086 

    Collisions of ions with charged dust grains are important for the propagation of low frequency waves such as dust acoustic waves and dust ion-acoustic waves. The collision cross-sectional area of charged dust grains depends on the velocity of an ion beam. The collision cross-sectional area of...

  • Interaction of Ion Beam with Dusty Plasmas. Nakamura, Y.; Tsytovich, V. N. // AIP Conference Proceedings;2002, Vol. 649 Issue 1, p369 

    The collision cross sectional area of charged dust grains of 8.9 µm in diameter with beam ions is measured by a dusty plasma device. When the dust density is increased, the beam current ratio is reduced. The critical beam energy between scattering and absorption beam ions by dust particles is...

  • area rule (20th century) Physics.  // Dictionary of Theories;2002, p30 

    A definition of the term "area rule" is presented. It refers to a theory in physics. The term is used in hydrodynamics. The term is used to describe certain results concerning the drag on bodies travelling at supersonic speeds. The term is also used to describe formulae giving the wave drag of...

  • Ion wake effects on the Coulomb ion drag in complex dusty plasmas. Dae-Han Ki; Young-Dae Jung // Applied Physics Letters;9/6/2010, Vol. 97 Issue 10, p101502 

    The ion wake effects on the Coulomb drag force are investigated in complex dusty plasmas. It is shown that the ion wake effects significantly enhance the Coulomb ion drag force. It is also found that the ion wake effects on the Coulomb drag force increase with an increase in the Debye length. In...

  • Stimulated scattering of a light wave in a dusty plasma. Lee, Hee J. // Physics of Plasmas;Nov2001, Vol. 8 Issue 11, p5053 

    Nonlinear coupling of an electromagnetic wave and a slow density modulation associated with a dust acoustic wave in a dusty plasma is considered. A special case is considered where the electron temperature (T[sub e]) and the electron Debye length (λ[sub e]) are much greater than the...

  • Experimental Investigation of Laser-sustained Plasma in Supersonic Argon Flow. Sperber, David; Eckel, Hans-Albert; Moessinger, Peter; Fasoulas, Stefanos // AIP Conference Proceedings;11/10/2011, Vol. 1402 Issue 1, p405 

    Laser-induced energy deposition is widely discussed as a flow control technique in supersonic transportation. In case of thermal laser-plasma upstream of a blunt body, a substantial adaptation of shock wave geometry and magnitude of wave drag is predicted. Related to the research on laser...

  • Counterflow drag reduction by supersonic jet for a blunt body in hypersonic flow. Venukumar, Balla; Jagadeesh, G.; Reddy, K. P. J. // Physics of Fluids;Nov2006, Vol. 18 Issue 11, p118104 

    Counterflow drag reduction by supersonic jet for a large angle blunt cone at hypersonic Mach number is investigated in a shock tunnel. The flowfields around the test model in the hypersonic flow with an opposing supersonic jet emanating from the stagnation point of the model are visualized by...

  • Drag coefficients for bodies of meteorite-like shapes. Zhdan, I.; Stulov, V.; Stulov, P.; Turchak, L. // Solar System Research;Nov2007, Vol. 41 Issue 6, p505 

    The drag coefficients and the patterns of supersonic flows around rectangular parallelepipeds (bodies with rectangular and square faces-bricks and tiles, respectively) were found from numerical experiments. These drag coefficients c x are considerably different from the values used, in...

  • Instability Caused by Dust Drift and the Observed Polar Mesospheric Summer Echoes (PMSE’s). Tsytovich, V. N.; Havnes, O. // AIP Conference Proceedings;2002, Vol. 649 Issue 1, p454 

    Observations show that the Polar Mesopause Summer Echoes (PMSE's) radar scattering layers near the Earth mesopause are strongly linked to the dust layer in the same hight region [1]. No single mechanism has been found which is capable of explaining the PMSE over large frequency range and...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics