التفاصيل البيبلوغرافية
| العنوان: |
DNS and modeling of the interaction between turbulent premixed flames and walls |
| المؤلفون: |
Poinsot, T. J, Haworth, D. C |
| المصدر: |
Stanford Univ., Studying Turbulence Using Numerical Simulation Databases. 4: Proceedings of the 1992 Summer Program. |
| بيانات النشر: |
United States: NASA Center for Aerospace Information (CASI), 1992. |
| سنة النشر: |
1992 |
| مصطلحات موضوعية: |
Fluid Mechanics And Heat Transfer |
| الوصف: |
The interaction between turbulent premixed flames and walls is studied using a two-dimensional full Navier-Stokes solver with simple chemistry. The effects of wall distance on the local and global flame structure are investigated. Quenching distances and maximum wall heat fluxes during quenching are computed in laminar cases and are found to be comparable to experimental and analytical results. For turbulent cases, it is shown that quenching distances and maximum heat fluxes remain of the same order as for laminar flames. Based on simulation results, a 'law-of-the-wall' model is derived to describe the interaction between a turbulent premixed flame and a wall. This model is constructed to provide reasonable behavior of flame surface density near a wall under the assumption that flame-wall interaction takes place at scales smaller than the computational mesh. It can be implemented in conjunction with any of several recent flamelet models based on a modeled surface density equation, with no additional constraints on mesh size or time step. |
| نوع الوثيقة: |
Report |
| اللغة: |
English |
| Relation: |
The Telecommunications and Data Acquisition Report |
| URL الوصول: |
https://ntrs.nasa.gov/citations/19940010290 |
| رقم الانضمام: |
edsnas.19940010290 |
| قاعدة البيانات: |
NASA Technical Reports |