Pooling through cooling: creating optimal vibrational non-equilibrium in CO2 by supersonic expansion

被引：8
作者：
Peerenboom, Kim [1 ]
Khaji, Maryam [1 ]
Degrez, Gerard [1 ]
机构：
[1] Univ Libre Bruxelles, Aerothermomech Dept, Brussels, Belgium
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2017年 / 50卷 / 19期
关键词：
non-equilibrium; Treanor distribution; supersonic expansion; CO2; DISSOCIATION; MECHANISMS; KINETICS; MODELS;
D O I：
10.1088/1361-6463/aa695e
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present a quasi-1D model to study the influence of supersonic expansion on the non-equilibrium vibrational distribution function in CO2, relevant for the energy efficient splitting of CO2. The model includes 21 vibrational levels and state-to-state vibrational kinetics. It is found that the amount of non-equilibrium after the expansion is strongly dependent on the nozzle geometry. The highest degree of non-equilibrium is found for moderate Mach numbers. The inflow pressure appears to have a negligible effect on the degree of non-equilibrium. Lowering the inflow temperature has a beneficial effect on the vibrational distribution function.
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页数：10
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共 14 条
  • [1] State-to-state models for CO2 molecules: From the theory to an application to hypersonic boundary layers
    Armenise, I.
    Kustova, E. V.
    [J]. CHEMICAL PHYSICS, 2013, 415 : 269 - 281
  • [2] Self-consistent model of chemical, vibrational, electron kinetics in nozzle expansion
    Colonna, G
    Capitelli, M
    [J]. JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER, 2001, 15 (03) : 308 - 316
  • [3] 3D Nozzle Flow Simulations including State-to-State Kinetics Calculation
    Cutrone, L.
    Tuttafesta, M.
    Capitelli, M.
    Schettino, A.
    Pascazio, G.
    Colonna, G.
    [J]. PROCEEDINGS OF THE 29TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS, 2014, 1628 : 1154 - 1161
  • [4] Fridman A., 2008, PLASMA CHEM
  • [5] SELF-ADJUSTING GRID METHODS FOR ONE-DIMENSIONAL HYPERBOLIC CONSERVATION-LAWS
    HARTEN, A
    HYMAN, JM
    [J]. JOURNAL OF COMPUTATIONAL PHYSICS, 1983, 50 (02) : 235 - 269
  • [6] Splitting of CO2 by vibrational excitation in non-equilibrium plasmas: a reaction kinetics model
    Kozak, Tomas
    Bogaerts, Annemie
    [J]. PLASMA SOURCES SCIENCE & TECHNOLOGY, 2014, 23 (04)
  • [7] QCT-based vibrational collisional models applied to nonequilibrium nozzle flows
    Munafo, A.
    Panesi, M.
    Jaffe, R. L.
    Colonna, G.
    Bourdon, A.
    Magin, T. E.
    [J]. EUROPEAN PHYSICAL JOURNAL D, 2012, 66 (07)
  • [8] How do the barrier thickness and dielectric material influence the filamentary mode and CO2 conversion in a flowing DBD?
    Ozkan, A.
    Dufour, T.
    Bogaerts, A.
    Reniers, F.
    [J]. PLASMA SOURCES SCIENCE & TECHNOLOGY, 2016, 25 (04)
  • [9] Influence of Electron Molecule Resonant Vibrational Collisions over the Symmetric Mode and Direct Excitation-Dissociation Cross Sections of CO2 on the Electron Energy Distribution Function and Dissociation Mechanisms in Cold Pure CO2 Plasmas
    Pietanza, L. D.
    Colonna, G.
    Laporta, V.
    Celiberto, R.
    D'Ammando, G.
    Laricchiuta, A.
    Capitelli, M.
    [J]. JOURNAL OF PHYSICAL CHEMISTRY A, 2016, 120 (17) : 2614 - 2628
  • [10] Non equilibrium vibrational assisted dissociation and ionization mechanisms in cold CO2 plasmas
    Pietanza, L. D.
    Colonna, G.
    D'Ammando, G.
    Laricchiuta, A.
    Capitelli, M.
    [J]. CHEMICAL PHYSICS, 2016, 468 : 44 - 52
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