粘性流体の熱音響理論 第1部 微小サイクルのエネルギー変換とエネルギー流束
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- 富永 昭
- 筑波大学物理学系
書誌事項
- タイトル別名
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- Thermoacoustic Theory of Viscous Fluid, Part 1-Energy Conversion and Energy Flux of Small Cycles.
- Energy Conversion and Energy Flux of Small Cycles
- 微小サイクルのエネルギー変換とエネルギー流束
抄録
Discussed are energy conversion and energy flux accompanied to oscillations of viscous fluid. The energy conversion per unit volume is shown to be ρm(∂T/∂p)S«p⋅dS/dt»+«u⋅∇p» for a small cycle, for which variations of pressure p and entropy S are small. ρm is time average of the density, u is the velocity and ∇p is the pressure gradient. « » indicates double operations of spatial average over crosssectional area of flow-channel and time average. «u⋅∇p» is a negative quantity corresponding to dissipation due to viscosity of fluid. The average of energy flux is shown to be enthalpy flux ρm«H⋅u» approximately, in the case that the velocity u and the mass flux «ρ⋅u» are small and the wave length is long. ρ and H are variations of the density and the enthalpy respectively. The enthalpy flux for small cycle is shown to be summation of heat flux and work flux: ρm«H⋅u»=ρmTm«S⋅u»+«p⋅u» where «p⋅u» is the work flux and ρmTm«S⋅u» is the heat flux. Final discussions are on the energy conversion, the work flux and the heat flux of adiabatic reversible small-cycle, isothermal small-cycle, polytropic small-cycle, isobaric small-cycle and isochoric small-cycle.
収録刊行物
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- 低温工学
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低温工学 27 (7), 543-548, 1992
公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)
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詳細情報 詳細情報について
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- CRID
- 1390001204612506752
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- NII論文ID
- 130003672843
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- ISSN
- 18800408
- 03892441
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可