Numerical and Experimental Investigations of CH 4 /H 2 Mixtures: Ignition Delay Times, Laminar Burning Velocity and Extinction Limits

Simon Drost (), Sven Eckart (), Chunkan Yu, Robert Schießl, Hartmut Krause and Ulrich Maas
Additional contact information
Simon Drost: Institute of Technical Thermodynamics, Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, Germany
Sven Eckart: Institute of Thermal Engineering, Technische Universität Bergakademie Freiberg (TUBAF), 09599 Freiberg, Germany
Chunkan Yu: Institute of Technical Thermodynamics, Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, Germany
Robert Schießl: Institute of Technical Thermodynamics, Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, Germany
Hartmut Krause: Institute of Thermal Engineering, Technische Universität Bergakademie Freiberg (TUBAF), 09599 Freiberg, Germany
Ulrich Maas: Institute of Technical Thermodynamics, Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe, Germany

Energies, 2023, vol. 16, issue 6, 1-17

Abstract: In this work, the influence of H 2 addition on the auto-ignition and combustion properties of CH 4 is investigated experimentally and numerically. Experimental ignition delay times (IDT) are compared with simulations and laminar burning velocities (LBVs), and extinction limits/extinction strain rates (ESRs) are compared with data from the literature. A wide variety of literature data are collected and reviewed, and experimental data points are extracted for IDT, LBV and ESR. The results are used for the validation of existing reaction mechanisms. The reaction mechanisms and models used are able to reproduce the influence of H 2 addition to CH 4 (e.g., shortening IDTs, increasing ESRs and increasing LBVs). IDTs are investigated in a range from 6 to 15 bar and temperatures from 929 to 1165 K with H 2 addition from 10 to 100 mol%. We show that LBV and ESR are predicted in a wide range by the numerical simulations. Moreover, the numerical simulations using detailed Aramco Mech 3.0 (581 species) are compared with the derived reduced reaction mechanism UCB Chen (49 species). The results show that the reduced chemistry obtained by considering only the IDT is also valid for LBV and ESR.

Keywords: methane; hydrogen; ignition delay times; rapid compression machine; laminar burning velocity; extinction limit (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/16/6/2621/pdf (application/pdf)
https://www.mdpi.com/1996-1073/16/6/2621/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:16:y:2023:i:6:p:2621-:d:1093543

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().