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Nonlinear spherical...
Nonlinear spherical gravitational downfall of gas onto a solid ball : Analytic and numerical results
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- Gaite, José A. (author)
- Inst. de Matemat./Fis. Fundamental, CSIC
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- Zorzano, María Paz (author)
- Centro de Astrobiología, CSIC-INTA
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Inst de Matemat./Fis. Fundamental, CSIC Centro de Astrobiología, CSIC-INTA (creator_code:org_t)
- Elsevier, 2003
- 2003
- English.
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In: Physica D. - : Elsevier. - 0167-2789 .- 1872-8022. ; 183:1-2, s. 102-116
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The process of downfall of initially homogeneous gas onto a solid ball due to the ball's gravity (relevant in astrophysical situations) is studied with a combination of analytic and numerical methods. The initial explicit solution soon becomes discontinuous and gives rise to a shock wave. Afterwards, there is a crossover between two intermediate asymptotic similarity regimes, where the shock wave propagates outwards according to two self-similar laws, initially accelerating and eventually decelerating and vanishing, leading to a static state. The numerical study allows one to investigate in detail this dynamical problem and its time evolution, verifying and complementing the analytic results on the initial solution, intermediate self-similar laws and static long-term solution.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Rymd- och flygteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Aerospace Engineering (hsv//eng)
Keyword
- Atmosfärsvetenskap
- Atmospheric science
Publication and Content Type
- ref (subject category)
- art (subject category)
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