Simulation of hypersonic flows using a detailed nitric oxide formation model

Deepak Bose; Graham V. Candler

doi:10.2514/6.1996-1801

Simulation of hypersonic flows using a detailed nitric oxide formation model

Deepak Bose
, Graham V. Candler

Aerospace Engineering and Mechanics

Research output: Contribution to conference › Paper › peer-review

4 Scopus citations

Abstract

In this paper we use the extensive quasiclassical trajectory (QCT) study recently concluded [Journal of Chemical Physics, Vol. 104, No. 8, 1996] to model the kinetics of the primary NO formation reaction, N₂ + O → NO + N in hypersonic nonequilibrium flows. The QCT data are used to obtain expressions for the thermal rate constant, reactant energy removal, and product energy disposal rates of this reaction. The QCT results are coupled with the continuum conservation flow equations, and these equations are used to simulate the Bow-Shock UltraViolet2 (BSUV2) flow at altitudes between 75 to 87.5km. It is found that the use of the Macheret and Rich [Chemical Physics, Vol. 174, 1993] vibration-dissociation coupling model along with the QCT rates gives improvements in the NO concentration predictions at altitudes between 80 to 85km. Also, we find that the vibrational and rotational temperatures of NO formed are much higher than that of the N₂ and O₂ in the gas, in accordance with the BSUV2 measurements. The amount NO produced in the flowfields at 87.5 km and above are found to be strongly dependent on the freestream density of atomic oxygen.

Original language	English (US)
DOIs	https://doi.org/10.2514/6.1996-1801
State	Published - 1996
Event	31st Thermophysics Conference, 1996 - New Orleans, United States Duration: Jun 17 1996 → Jun 20 1996

Other

Other	31st Thermophysics Conference, 1996
Country/Territory	United States
City	New Orleans
Period	6/17/96 → 6/20/96

Bibliographical note

Funding Information:
Support for the authors is provided by the Army Research Office under Grant No. DAAH04-93-G-0089. This work was also sponsored in part by the Army High Performance Computing Research Center under the auspices of the Department of the Army, Army Research Laboratory cooperative agreement number DAAH04-95-2-0003 / contract number DAAH04-95-C-0008, the content of which does not necessarily reflect the position or the policy of the government, and no official endorsement should be inferred.

Publisher Copyright:
© 1996 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

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title = "Simulation of hypersonic flows using a detailed nitric oxide formation model",

abstract = "In this paper we use the extensive quasiclassical trajectory (QCT) study recently concluded [Journal of Chemical Physics, Vol. 104, No. 8, 1996] to model the kinetics of the primary NO formation reaction, N2 + O → NO + N in hypersonic nonequilibrium flows. The QCT data are used to obtain expressions for the thermal rate constant, reactant energy removal, and product energy disposal rates of this reaction. The QCT results are coupled with the continuum conservation flow equations, and these equations are used to simulate the Bow-Shock UltraViolet2 (BSUV2) flow at altitudes between 75 to 87.5km. It is found that the use of the Macheret and Rich [Chemical Physics, Vol. 174, 1993] vibration-dissociation coupling model along with the QCT rates gives improvements in the NO concentration predictions at altitudes between 80 to 85km. Also, we find that the vibrational and rotational temperatures of NO formed are much higher than that of the N2 and O2 in the gas, in accordance with the BSUV2 measurements. The amount NO produced in the flowfields at 87.5 km and above are found to be strongly dependent on the freestream density of atomic oxygen.",

author = "Deepak Bose and Candler, \{Graham V.\}",

note = "Funding Information: Support for the authors is provided by the Army Research Office under Grant No. DAAH04-93-G-0089. This work was also sponsored in part by the Army High Performance Computing Research Center under the auspices of the Department of the Army, Army Research Laboratory cooperative agreement number DAAH04-95-2-0003 / contract number DAAH04-95-C-0008, the content of which does not necessarily reflect the position or the policy of the government, and no official endorsement should be inferred. Publisher Copyright: {\textcopyright} 1996 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.; 31st Thermophysics Conference, 1996 ; Conference date: 17-06-1996 Through 20-06-1996",

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doi = "10.2514/6.1996-1801",

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T1 - Simulation of hypersonic flows using a detailed nitric oxide formation model

AU - Bose, Deepak

AU - Candler, Graham V.

N1 - Funding Information: Support for the authors is provided by the Army Research Office under Grant No. DAAH04-93-G-0089. This work was also sponsored in part by the Army High Performance Computing Research Center under the auspices of the Department of the Army, Army Research Laboratory cooperative agreement number DAAH04-95-2-0003 / contract number DAAH04-95-C-0008, the content of which does not necessarily reflect the position or the policy of the government, and no official endorsement should be inferred. Publisher Copyright: © 1996 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

PY - 1996

Y1 - 1996

N2 - In this paper we use the extensive quasiclassical trajectory (QCT) study recently concluded [Journal of Chemical Physics, Vol. 104, No. 8, 1996] to model the kinetics of the primary NO formation reaction, N2 + O → NO + N in hypersonic nonequilibrium flows. The QCT data are used to obtain expressions for the thermal rate constant, reactant energy removal, and product energy disposal rates of this reaction. The QCT results are coupled with the continuum conservation flow equations, and these equations are used to simulate the Bow-Shock UltraViolet2 (BSUV2) flow at altitudes between 75 to 87.5km. It is found that the use of the Macheret and Rich [Chemical Physics, Vol. 174, 1993] vibration-dissociation coupling model along with the QCT rates gives improvements in the NO concentration predictions at altitudes between 80 to 85km. Also, we find that the vibrational and rotational temperatures of NO formed are much higher than that of the N2 and O2 in the gas, in accordance with the BSUV2 measurements. The amount NO produced in the flowfields at 87.5 km and above are found to be strongly dependent on the freestream density of atomic oxygen.

AB - In this paper we use the extensive quasiclassical trajectory (QCT) study recently concluded [Journal of Chemical Physics, Vol. 104, No. 8, 1996] to model the kinetics of the primary NO formation reaction, N2 + O → NO + N in hypersonic nonequilibrium flows. The QCT data are used to obtain expressions for the thermal rate constant, reactant energy removal, and product energy disposal rates of this reaction. The QCT results are coupled with the continuum conservation flow equations, and these equations are used to simulate the Bow-Shock UltraViolet2 (BSUV2) flow at altitudes between 75 to 87.5km. It is found that the use of the Macheret and Rich [Chemical Physics, Vol. 174, 1993] vibration-dissociation coupling model along with the QCT rates gives improvements in the NO concentration predictions at altitudes between 80 to 85km. Also, we find that the vibrational and rotational temperatures of NO formed are much higher than that of the N2 and O2 in the gas, in accordance with the BSUV2 measurements. The amount NO produced in the flowfields at 87.5 km and above are found to be strongly dependent on the freestream density of atomic oxygen.

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U2 - 10.2514/6.1996-1801

DO - 10.2514/6.1996-1801

M3 - Paper

AN - SCOPUS:84964515466

T2 - 31st Thermophysics Conference, 1996

Y2 - 17 June 1996 through 20 June 1996

ER -

Simulation of hypersonic flows using a detailed nitric oxide formation model

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