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#13457. Supersonic lifting jet flame large eddy simulation in the high-enthalpy flows
Моделирование крупных вихрей пламени сверхзвуковой подъемной струи в высокоэнтальпийных потоках
| August 2026 | publication date |
| Proposal available till | 06-06-2025 |
| 3 total number of authors per manuscript | 4500 $ |
| The title of the journal is available only for the authors who have already paid for |
| Journal’s subject area: |
| Mathematics (all) Applied Mathematics Mathematical Physics OR ANOTHER |
| place 1 | place 2 | place 3 |
| Free | Free | Free |
| 1800 $ | 1500 $ | 1200 $ |
Contract №13457.1   | Contract №13457.2 | Contract №13457.3 |
1 place - free (for sale)
2 place - free (for sale)
3 place - free (for sale)
Abstract:
Abstract
The capacity to maintain stability inside hot flows may be ascribed to the complex interaction between autoignition and the dispersion of active kernels at the flame base. Hence, prior research has not extensively examined the progressive changes in the axial orientation of the combustion properties of the high-pressure hydrogen jet. The present work offers a comprehensive analysis of the integration of hydrogen into the airflow via the use of high-resolution large eddy modeling techniques. A supersonic burner in their experimental setup to generate a nonpremixed flame that demonstrated spatial development was used. This study focuses on the evolutionary attributes of turbulent structures and the underlying process responsible for preserving flame stability. Numerical techniques provide a high level of temporal and spatial precision, enabling accurate representation of the unstable motion inside the supersonic reactive flowfield. The real-time photos demonstrate that the large-scale eddy simulation effectively replicates the three-dimensional flow pattern resulting from the interaction between the inner jet and heated air flow. These representations include several characteristics such as Temperature (300-1800 K), H2O (0-80 %), OH (0-4 %), Z (0-0.9), Mach number (0.9-1.9). Based on the results obtained from the time-averaged investigation, it is possible to categorize the combustion flowfield into three distinct phases. The percentage of fuel and air engaged in the chemical processes is represented by the mixture fraction Z, which establishes a link between turbulent flow and chemical events. The statistical parameters in the axial direction undergo noticeable alterations during the transition from autoignition to a partly premixed flame in a supersonic reactive flow. Furthermore, a comprehensive examination is conducted to evaluate the impact of faint turbulent oscillations on the energetic front inside the shear layer. The aforementioned observation provides crucial insights into the turbulent combustion regime under conditions of elevated enthalpy.
Keywords:
Keywords: hydrogen, air, combustion, supersonic jet flame, high-enthalpy flows
Contacts :
2 place - free (for sale)
3 place - free (for sale)
Abstract:
Abstract
The capacity to maintain stability inside hot flows may be ascribed to the complex interaction between autoignition and the dispersion of active kernels at the flame base. Hence, prior research has not extensively examined the progressive changes in the axial orientation of the combustion properties of the high-pressure hydrogen jet. The present work offers a comprehensive analysis of the integration of hydrogen into the airflow via the use of high-resolution large eddy modeling techniques. A supersonic burner in their experimental setup to generate a nonpremixed flame that demonstrated spatial development was used. This study focuses on the evolutionary attributes of turbulent structures and the underlying process responsible for preserving flame stability. Numerical techniques provide a high level of temporal and spatial precision, enabling accurate representation of the unstable motion inside the supersonic reactive flowfield. The real-time photos demonstrate that the large-scale eddy simulation effectively replicates the three-dimensional flow pattern resulting from the interaction between the inner jet and heated air flow. These representations include several characteristics such as Temperature (300-1800 K), H2O (0-80 %), OH (0-4 %), Z (0-0.9), Mach number (0.9-1.9). Based on the results obtained from the time-averaged investigation, it is possible to categorize the combustion flowfield into three distinct phases. The percentage of fuel and air engaged in the chemical processes is represented by the mixture fraction Z, which establishes a link between turbulent flow and chemical events. The statistical parameters in the axial direction undergo noticeable alterations during the transition from autoignition to a partly premixed flame in a supersonic reactive flow. Furthermore, a comprehensive examination is conducted to evaluate the impact of faint turbulent oscillations on the energetic front inside the shear layer. The aforementioned observation provides crucial insights into the turbulent combustion regime under conditions of elevated enthalpy.
Keywords:
Keywords: hydrogen, air, combustion, supersonic jet flame, high-enthalpy flows
Contacts :
