High fidelity modeling of energy transfer and chemical reactions in shock waves

Tong Zhu, Zheng Li, Neal Parsons, Deborah Levin Fliflet

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this work, newly-developed MD-QCT databases1 for chemical reaction and interal energy relaxation are implemented progressively in DSMC simulations of heat bath cases and normal shocks in nitrogen and the results are compared with those obtained using the traditional TCE and LB models. In the heat bath cases the MD-QCT chemical reaction model predicts more dissociation and less nonequilibrium eventually and faster relaxation of the vibrational temperature compared with using the TCE-LB models. In the lower speed one-dimensional unsteady shocks cases, the flow field results exhibit similar behavior as those seen in the heat bath case when the MD-QCT databases are progressively added. Finally, in the even higher speed shock conditions as those appeared in the experiments by Fujita et al., the use of MD-QCT databases for both chemical reaction and interal energy predicts more dissociation in the downstream of the shock but slower relaxation of the rotational temperature than using the TCE and LB models. Furthermore, the rotational temperature in the shock region is in better agreement with experiments and confirms that large rotational nonequilibrium is present in very strong nitrogen shocks.

Original languageEnglish (US)
Title of host publicationAIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624102936
StatePublished - Jan 1 2014
Externally publishedYes
EventAIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference 2014 - Atlanta, GA, United States
Duration: Jun 16 2014Jun 20 2014

Publication series

NameAIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference

Other

OtherAIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference 2014
CountryUnited States
CityAtlanta, GA
Period6/16/146/20/14

Fingerprint

Shock waves
Energy transfer
Chemical reactions
Nitrogen
Temperature
Flow fields
Experiments
Hot Temperature

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanical Engineering

Cite this

Zhu, T., Li, Z., Parsons, N., & Levin Fliflet, D. (2014). High fidelity modeling of energy transfer and chemical reactions in shock waves. In AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference (AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference). American Institute of Aeronautics and Astronautics Inc..

High fidelity modeling of energy transfer and chemical reactions in shock waves. / Zhu, Tong; Li, Zheng; Parsons, Neal; Levin Fliflet, Deborah.

AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference. American Institute of Aeronautics and Astronautics Inc., 2014. (AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhu, T, Li, Z, Parsons, N & Levin Fliflet, D 2014, High fidelity modeling of energy transfer and chemical reactions in shock waves. in AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference. AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference, American Institute of Aeronautics and Astronautics Inc., AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference 2014, Atlanta, GA, United States, 6/16/14.
Zhu T, Li Z, Parsons N, Levin Fliflet D. High fidelity modeling of energy transfer and chemical reactions in shock waves. In AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference. American Institute of Aeronautics and Astronautics Inc. 2014. (AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference).
Zhu, Tong ; Li, Zheng ; Parsons, Neal ; Levin Fliflet, Deborah. / High fidelity modeling of energy transfer and chemical reactions in shock waves. AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference. American Institute of Aeronautics and Astronautics Inc., 2014. (AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference).
@inproceedings{079da0ed8d864dee815f4fee574c8c44,
title = "High fidelity modeling of energy transfer and chemical reactions in shock waves",
abstract = "In this work, newly-developed MD-QCT databases1 for chemical reaction and interal energy relaxation are implemented progressively in DSMC simulations of heat bath cases and normal shocks in nitrogen and the results are compared with those obtained using the traditional TCE and LB models. In the heat bath cases the MD-QCT chemical reaction model predicts more dissociation and less nonequilibrium eventually and faster relaxation of the vibrational temperature compared with using the TCE-LB models. In the lower speed one-dimensional unsteady shocks cases, the flow field results exhibit similar behavior as those seen in the heat bath case when the MD-QCT databases are progressively added. Finally, in the even higher speed shock conditions as those appeared in the experiments by Fujita et al., the use of MD-QCT databases for both chemical reaction and interal energy predicts more dissociation in the downstream of the shock but slower relaxation of the rotational temperature than using the TCE and LB models. Furthermore, the rotational temperature in the shock region is in better agreement with experiments and confirms that large rotational nonequilibrium is present in very strong nitrogen shocks.",
author = "Tong Zhu and Zheng Li and Neal Parsons and {Levin Fliflet}, Deborah",
year = "2014",
month = "1",
day = "1",
language = "English (US)",
isbn = "9781624102936",
series = "AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference",
publisher = "American Institute of Aeronautics and Astronautics Inc.",
booktitle = "AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference",

}

TY - GEN

T1 - High fidelity modeling of energy transfer and chemical reactions in shock waves

AU - Zhu, Tong

AU - Li, Zheng

AU - Parsons, Neal

AU - Levin Fliflet, Deborah

PY - 2014/1/1

Y1 - 2014/1/1

N2 - In this work, newly-developed MD-QCT databases1 for chemical reaction and interal energy relaxation are implemented progressively in DSMC simulations of heat bath cases and normal shocks in nitrogen and the results are compared with those obtained using the traditional TCE and LB models. In the heat bath cases the MD-QCT chemical reaction model predicts more dissociation and less nonequilibrium eventually and faster relaxation of the vibrational temperature compared with using the TCE-LB models. In the lower speed one-dimensional unsteady shocks cases, the flow field results exhibit similar behavior as those seen in the heat bath case when the MD-QCT databases are progressively added. Finally, in the even higher speed shock conditions as those appeared in the experiments by Fujita et al., the use of MD-QCT databases for both chemical reaction and interal energy predicts more dissociation in the downstream of the shock but slower relaxation of the rotational temperature than using the TCE and LB models. Furthermore, the rotational temperature in the shock region is in better agreement with experiments and confirms that large rotational nonequilibrium is present in very strong nitrogen shocks.

AB - In this work, newly-developed MD-QCT databases1 for chemical reaction and interal energy relaxation are implemented progressively in DSMC simulations of heat bath cases and normal shocks in nitrogen and the results are compared with those obtained using the traditional TCE and LB models. In the heat bath cases the MD-QCT chemical reaction model predicts more dissociation and less nonequilibrium eventually and faster relaxation of the vibrational temperature compared with using the TCE-LB models. In the lower speed one-dimensional unsteady shocks cases, the flow field results exhibit similar behavior as those seen in the heat bath case when the MD-QCT databases are progressively added. Finally, in the even higher speed shock conditions as those appeared in the experiments by Fujita et al., the use of MD-QCT databases for both chemical reaction and interal energy predicts more dissociation in the downstream of the shock but slower relaxation of the rotational temperature than using the TCE and LB models. Furthermore, the rotational temperature in the shock region is in better agreement with experiments and confirms that large rotational nonequilibrium is present in very strong nitrogen shocks.

UR - http://www.scopus.com/inward/record.url?scp=84906996623&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84906996623&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84906996623

SN - 9781624102936

T3 - AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference

BT - AIAA AVIATION 2014 -7th AIAA Theoretical Fluid Mechanics Conference

PB - American Institute of Aeronautics and Astronautics Inc.

ER -