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Title: Ignition delay time and H2O measurements during methanol oxidation behind reflected shock waves

Abstract

To improve detailed chemical kinetics models, the oxidation of methanol was investigated behind reflected shock waves in shock tubes. Ignition delay times of methanol–air mixtures, with Ar as diluent, were studied between 940 and 1540 K in a heated shock tube, for pressures up to 14.9 atm and for equivalence ratios of 0.5, 1.0, and 2.0. Water profiles were measured by utilizing a laser absorption technique in the 1350-to-1600-K temperature range, at an average pressure of 1.3 atm and for similar equivalence ratios. The present study shows here the ignition delay times of methanol to be in very good agreement with results from the literature (Fieweger et al., 1997), whereas the other conditions have never been investigated before. The ignition delay time data are also in good agreement with modern detailed kinetics mechanisms such as the AramcoMech 3.0 model. The water time-history profiles were modeled using well-known literature mechanisms. Discrepancies were observed between these kinetics mechanisms, and poor predictions were observed for the lower temperatures investigated. Sensitivity and rate-of-production analyses were performed using 3 literature mechanisms (namely, AramcoMech 3.0, Princeton, and JetSurfII). Discrepancies were found among the models when predicting important reactions dominating the oxidation of methanol as well asmore » the rate-of-production of H2O.« less

Authors:
 [1];  [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]
  1. Texas A & M University, College Station, TX (United States)
  2. Louisiana State University, Baton Rouge, LA (United States)
Publication Date:
Research Org.:
Louisiana State Univ., Baton Rouge, LA (United States); Texas A & M Univ., College Station, TX (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office; National Science Foundation (NSF); USDOE
OSTI Identifier:
1495676
Alternate Identifier(s):
OSTI ID: 1547722
Grant/Contract Number:  
EE0007981; CBET-1706825
Resource Type:
Accepted Manuscript
Journal Name:
Combustion and Flame
Additional Journal Information:
Journal Volume: 203; Journal ID: ISSN 0010-2180
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; methanol; shock tube; ignition; H2O laser absorption

Citation Formats

Pinzón, L. T., Mathieu, O., Mulvihill, C. R., Schoegl, I., and Petersen, E. L. Ignition delay time and H2O measurements during methanol oxidation behind reflected shock waves. United States: N. p., 2019. Web. doi:10.1016/j.combustflame.2019.01.036.
Pinzón, L. T., Mathieu, O., Mulvihill, C. R., Schoegl, I., & Petersen, E. L. Ignition delay time and H2O measurements during methanol oxidation behind reflected shock waves. United States. https://doi.org/10.1016/j.combustflame.2019.01.036
Pinzón, L. T., Mathieu, O., Mulvihill, C. R., Schoegl, I., and Petersen, E. L. Fri . "Ignition delay time and H2O measurements during methanol oxidation behind reflected shock waves". United States. https://doi.org/10.1016/j.combustflame.2019.01.036. https://www.osti.gov/servlets/purl/1495676.
@article{osti_1495676,
title = {Ignition delay time and H2O measurements during methanol oxidation behind reflected shock waves},
author = {Pinzón, L. T. and Mathieu, O. and Mulvihill, C. R. and Schoegl, I. and Petersen, E. L.},
abstractNote = {To improve detailed chemical kinetics models, the oxidation of methanol was investigated behind reflected shock waves in shock tubes. Ignition delay times of methanol–air mixtures, with Ar as diluent, were studied between 940 and 1540 K in a heated shock tube, for pressures up to 14.9 atm and for equivalence ratios of 0.5, 1.0, and 2.0. Water profiles were measured by utilizing a laser absorption technique in the 1350-to-1600-K temperature range, at an average pressure of 1.3 atm and for similar equivalence ratios. The present study shows here the ignition delay times of methanol to be in very good agreement with results from the literature (Fieweger et al., 1997), whereas the other conditions have never been investigated before. The ignition delay time data are also in good agreement with modern detailed kinetics mechanisms such as the AramcoMech 3.0 model. The water time-history profiles were modeled using well-known literature mechanisms. Discrepancies were observed between these kinetics mechanisms, and poor predictions were observed for the lower temperatures investigated. Sensitivity and rate-of-production analyses were performed using 3 literature mechanisms (namely, AramcoMech 3.0, Princeton, and JetSurfII). Discrepancies were found among the models when predicting important reactions dominating the oxidation of methanol as well as the rate-of-production of H2O.},
doi = {10.1016/j.combustflame.2019.01.036},
journal = {Combustion and Flame},
number = ,
volume = 203,
place = {United States},
year = {Fri Feb 22 00:00:00 EST 2019},
month = {Fri Feb 22 00:00:00 EST 2019}
}

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