Aerodynamic properties of fractal grains - Implications for the primordial solar nebula
Gas-grain and grain-grain interactions have a significant role in the evolution of the primordial solar nebula. There is also compelling evidence for larger grains in dense interstellar clouds than in the diffuse interstellar medium. In the usual treatments of grain collisions, where it is assumed t...
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| Veröffentlicht in: | Astrophys. J.; (United States) 1988-06, Vol.329 (1), p.39-41 |
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| container_title | Astrophys. J.; (United States) |
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| creator | Meakin, P. Donn, B. |
| description | Gas-grain and grain-grain interactions have a significant role in the evolution of the primordial solar nebula. There is also compelling evidence for larger grains in dense interstellar clouds than in the diffuse interstellar medium. In the usual treatments of grain collisions, where it is assumed that collisions produce compact bodies with a constant density, the gas drag decreases rapidly with size. The first step toward a quantitative analysis of the aerodynamic behavior of fractal aggregates is reported here, and it is shown that for fractals drag decreases very slowly. |
| doi_str_mv | 10.1086/185172 |
| format | Article |
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There is also compelling evidence for larger grains in dense interstellar clouds than in the diffuse interstellar medium. In the usual treatments of grain collisions, where it is assumed that collisions produce compact bodies with a constant density, the gas drag decreases rapidly with size. The first step toward a quantitative analysis of the aerodynamic behavior of fractal aggregates is reported here, and it is shown that for fractals drag decreases very slowly.</description><identifier>ISSN: 0004-637X</identifier><identifier>EISSN: 1538-4357</identifier><identifier>DOI: 10.1086/185172</identifier><identifier>CODEN: ASJOAB</identifier><language>eng</language><publisher>Legacy CDMS: University of Chicago Press</publisher><subject>AERODYNAMICS ; Astronomy ; Astrophysics ; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; COLLISIONS ; COSMIC GASES ; Earth, ocean, space ; Exact sciences and technology ; FLUID MECHANICS ; FLUIDS ; FRACTALS ; GASES ; General, solar nebula, and cosmogony ; INTERSTELLAR GRAINS ; MATHEMATICAL MODELS ; MECHANICS ; NEBULAE ; PARTICLES 640107 -- Astrophysics & Cosmology-- Planetary Phenomena ; SOLAR NEBULA ; SOLAR SYSTEM ; SOLAR SYSTEM EVOLUTION</subject><ispartof>Astrophys. 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In the usual treatments of grain collisions, where it is assumed that collisions produce compact bodies with a constant density, the gas drag decreases rapidly with size. The first step toward a quantitative analysis of the aerodynamic behavior of fractal aggregates is reported here, and it is shown that for fractals drag decreases very slowly.</abstract><cop>Legacy CDMS</cop><pub>University of Chicago Press</pub><doi>10.1086/185172</doi><tpages>3</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0004-637X |
| ispartof | Astrophys. J.; (United States), 1988-06, Vol.329 (1), p.39-41 |
| issn | 0004-637X 1538-4357 |
| language | eng |
| recordid | cdi_crossref_primary_10_1086_185172 |
| source | NASA Technical Reports Server; Alma/SFX Local Collection |
| subjects | AERODYNAMICS Astronomy Astrophysics CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COLLISIONS COSMIC GASES Earth, ocean, space Exact sciences and technology FLUID MECHANICS FLUIDS FRACTALS GASES General, solar nebula, and cosmogony INTERSTELLAR GRAINS MATHEMATICAL MODELS MECHANICS NEBULAE PARTICLES 640107 -- Astrophysics & Cosmology-- Planetary Phenomena SOLAR NEBULA SOLAR SYSTEM SOLAR SYSTEM EVOLUTION |
| title | Aerodynamic properties of fractal grains - Implications for the primordial solar nebula |
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