Free boundary problem for the equations of spherically symmetric motion of compressible gas with density-dependent viscosity
✍ Scribed by Bernard Ducomet; Šárka Necasová
- Publisher
- Springer
- Year
- 2009
- Tongue
- English
- Weight
- 256 KB
- Volume
- 9
- Category
- Article
- ISSN
- 1424-3199
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## Abstract We consider an initial‐boundary value problem for the equations of spherically symmetric motion of a pressureless gas with temperature‐dependent viscosity µ(θ) and conductivity κ(θ). We prove that this problem admits a unique weak solution, assuming Belov's functional relation between µ
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A free-boundary problem of describing a joint motion of two compressible fluids with different viscosities is considered. The passage to the limit is studied as the shear viscosity of one of the fluids vanishes.