RAREFIED GAS DYNAMICS AND ITS APPLICATIONS TO VACUUM ...

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Recent results over the whole range of the gas rarefaction • Single gas flows through long tubes and channels • Mixture gas flows through long tubes and channels • Gas flow through orifices and slits • Couette flow of a single gas • Couette flow of mixtures • Modelling of vacuum pumps Felix Sharipov – p. 45
Numerical programs Some calculations of flow rate through tubes, channels and orifices can be carried out in dimensional quantities on line http://fisica.ufpr.br/sharipov/ Felix Sharipov – p. 46
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0.5 setgray0 0.5 setgray1 RAREFIED
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Typical problems isothermal flows,
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Typical problems isothermal flows,
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Typical problems non-isothermal flo
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Typical problems Thermomolecular pr
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Typical problems Thermomolecular pr
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Knudsen number Kn = molecular mean
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Knudsen number Kn = molecular mean
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Rarefaction parameter equivalent me
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Rarefaction parameter equivalent me
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Boltzmann equation f(t, r, v) - vel
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Boltzmann equation ∂f ∂t + v ·
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Boltzmann equation Discrete velocit
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Kinetic equations Till now, a numer
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Kinetic equations Till now, a numer
Page 35 and 36: Viscous slip coefficient
Page 37 and 38: Viscous slip coefficient All disagr
Page 39 and 40: Viscous slip coefficient
Page 41 and 42: Viscous slip coefficient Diffuse sc
Page 43 and 44: Viscous slip coefficient Non-diffus
Page 45 and 46: Gas-surface interaction law Experim
Page 47 and 48: Temperature jump coefficient Diffus
Page 49 and 50: Flow through a tube Free molecular
Page 51 and 52: Flow through a tube Transitional re
Page 59 and 60: Direct Simulation Monte Carlo M par
Page 61 and 62: Orifice flow ⑦ W = ˙ M , ˙M0 P0
Page 63 and 64: Orifice flow into vacuum P1 = 0 W 1
Page 65 and 66: Orifice flow into vacuum P1 = 0 W 1
Page 67 and 68: Orifice flow at P1 > 0 W 1.6 1.4 1.
Page 69 and 70: Orifice flow at P1 > 0 Flowfield at
Page 71 and 72: Holweck pump ✻ gas flow η ✻
Page 73 and 74: Holweck pump. Second stage S - pump
Page 75 and 76: Holweck pump. Results Limit compres
Page 77 and 78: Recent results Slip and jump bounda
Page 79 and 80: Recent results Slip and jump bounda
Page 81 and 82: Recent results over the whole range
Page 83 and 84: Recent results over the whole range
Page 85: Recent results over the whole range
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RAREFIED GAS DYNAMICS AND ITS APPLICATIONS TO VACUUM ...

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