Results 21 to 30 of about 17,172 (307)

Assessment of a Mid-Fidelity Numerical Approach for the Investigation of Tiltrotor Aerodynamics

Applied Sciences, 2021
The study of the complex aerodynamics that characterise tiltrotors represents a challenge for computational fluid dynamics tools. URANS numerical solvers are typically used to explore the aerodynamic features that characterise the different flight ...
Alex Zanotti, Alberto Savino, Michele Palazzi, Matteo Tugnoli, Vincenzo Muscarello   +4 more
doaj   +1 more source

Effects of Barnett Magnetic Dipole–Dipole Interaction on Grain Growth and Destruction

The Astrophysical Journal, 2023
Rapidly spinning magnetic grains can acquire large magnetic dipole moments due to the Barnett effect. Here we study the new effect of Barnett magnetic dipole–dipole interaction on grain–grain collisions and grain growth, assuming that grains are spun up ...
Thiem Hoang, Bao Truong
doaj   +1 more source

Physical Properties of Five Grain Dust Types [PDF]

Environmental Health Perspectives, 1986
Physical properties of grain dust derived from five grain types (soybean, rice, corn, wheat, and sorghum) were measured and reported. The grain dusts were obtained from dust collection systems of terminal grain handling facilities and were assumed to be representative of grain dust generated during the handling process. The physical properties reported
C B, Parnell, D D, Jones, R D, Rutherford, K J, Goforth   +3 more
openaire   +3 more sources

The Astrodust+PAH Model: A Unified Description of the Extinction, Emission, and Polarization from Dust in the Diffuse Interstellar Medium

The Astrophysical Journal, 2023
We present a new model of interstellar dust in which large grains are a single composite material, “astrodust,” and nanoparticle-sized grains come in distinct varieties including polycyclic aromatic hydrocarbons (PAHs). We argue that a single-composition
Brandon S. Hensley, B. T. Draine
doaj   +1 more source

PHYSICAL PROPERTIES OF LUMINOUS DUST-POOR QUASARS [PDF]

The Astrophysical Journal, 2013
We identify and characterize a population of luminous dust poor quasars at 06 previously. This class of active galactic nuclei has been known to show little IR emission from a dusty structure, but is yet poorly understood in terms of number evolution or of dependence on physical quantities.
Jun, Hyunsung David, Im, Myungshin
openaire   +2 more sources

Global dust model intercomparison in AeroCom phase I

, 2011
This study presents the results of a broad intercomparison of a total of 15 global aerosol models within the AeroCom project. Each model is compared to observations related to desert dust aerosols, their direct radiative effect, and their impact on the ...
Schulz, M., Sub Atmospheric physics and chemistry, Huneeus, N., Griesfeller, J., Zender, C.S., Krol, M.C., Marine and Atmospheric Research, Balkanski, Y., Takemura, T.   +8 more
core   +1 more source

Inhomogeneous cloud coverage through the Coulomb explosion of dust in substellar atmospheres [PDF]

, 2015
Context. Recent observations of brown dwarf spectroscopic variability in the infrared infer the presence of patchy cloud cover. Aims. This paper proposes a mechanism for producing inhomogeneous cloud coverage due to the depletion of cloud particles ...
Stark, Craig Ronald, Stark, C.R., Diver, D.A., Helling, C., Helling, Christiane, Diver, D. A.   +5 more
core   +1 more source

Physical Properties of the Interplanetary Dust [PDF]

International Astronomical Union Colloquium, 1971
The interplanetary dust may be composed of cometary material, interstellar grains, debris from asteroidal collisions, primordial material formed by direct condensation, or contributions from all of these sources. Before we can determine the origin of the dust, we need to know its physical nature, spatial distribution, and the dynamical forces that act ...
openaire   +1 more source

Analytical study of (3 + 1)-dimensional fractional ultralow-frequency dust acoustic waves in a dual-temperature plasma

Journal of Low Frequency Noise, Vibration and Active Control, 2019
Ultralow-frequency dust acoustic waves in plasma are an important branch of study in plasma physics. Due to the important application of dust acoustic waves in the space environment, industrial processing, and the laboratory, they have aroused great ...
Junchao Sun, Lei Fu, Hongwei Yang
doaj   +1 more source

Investigation of Dust Grains by Optical Tweezers for Space Applications

The Astrophysical Journal, 2022
Cosmic dust plays a dominant role in the universe, especially in the formation of stars and planetary systems. Furthermore, the surface of cosmic dust grains is the benchwork where molecular hydrogen and simple organic compounds are formed. We manipulate
A. Magazzù, D. Bronte Ciriza, A. Musolino, A. Saidi, P. Polimeno, M. G. Donato, A. Foti, P. G. Gucciardi, M. A. Iatì, R. Saija, N. Perchiazzi, A. Rotundi, L. Folco, O. M. Maragò   +13 more
doaj   +1 more source