NDLI: Analysis of aerodynamic torques affecting dust particle orientation as input to microwave cross polarization

Content Provider	IEEE Xplore Digital Library
Author	Musa, A. Bashir, S.O. Hamed, S.M.A.
Copyright Year	2013
Description	Author affiliation: Electr. & Comput. Eng. Dept., Int. Islamic Univ. Malaysia, Kuala Lumpur, Malaysia (Musa, A.; Bashir, S.O.) \|\| Fac. of Eng. & Technol., Nile Valley Univ., Sudan (Hamed, S.M.A.)
Abstract	Cross polarization in microwave link, method of using dual orthogonal polarizations to optimally conserve the frequency spectrum, has received considerable interest in the recent time. This paper implicitly discusses its prediction in sand and dust storms. Cross polarization in dust storms occurs due to the non-sphericity of the falling dust particles and the tendency of the particles to align in a particular direction at a time (canting angle). It is therefore important to have adequate information on the dust particle sizes, particle shapes, orientation of particles along the propagation path etc. for the cross polarization due to dust storms. This work deals with the latter two points by making use of a more reliable measure of turbulence shear and inertial torque to tackle orientation of sand and dust storms suspended particles calculations as input to cross polarization discrimination magnitudes. The paper explicitly analyses the systematic alignment of particles due to torque of fluid flow round dust particles as a main parameter causing cross polarization. The results obtained show that there exists some form of systematic alignment of particles in the most relevant size range that was considered.
Starting Page	615
Ending Page	619
File Size	699365
Page Count	5
File Format	PDF
e-ISBN	9781467362320
DOI	10.1109/ICCEEE.2013.6634010
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-08-26
Publisher Place	Sudan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Torque Fluids Systematics Storms Shape Turbulent flow Sand-dust storms Fluid flow Cross polarization Particle alignment Inertial torque Ellipsoids
Content Type	Text
Resource Type	Article

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