| Autor: |
Mouldi Chrigui, W. Ahmadi, Amsini Sadiki |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
ERCOFTAC Series ISBN: 9789400714083 |
| DOI: |
10.1007/978-94-007-1409-0_4 |
| Popis: |
While the first part of this work dealt with the question related to the impact of partial vaporization on spray flame properties, the second part attempts to answer the question how the evaporation process behaves under turbulent premixed combustion conditions. According to the Eulerian-Lagrangian RANS-based spray module designed in Part I the non-equilibrium evaporation model, that was proven to capture accurately the evaporation process characteristics under operating environments similar to industrial application conditions, is especially applied here. The so-called conditioned progress variable approach (CPVA) based on the Bray-Moss-Libby (BML) model as adapted in Part I to account for both premixed and partially premixed combustion is used to describe the combustion process and determine the gas properties that are seen by droplets. To assess the numerical approach and to analyze the evaporation-combustion interactions a model gas turbine combustor fueled by N-heptane is considered as to exhibit the behaviour of single component fuel. It features a turbulent premixed combustion. To isolate the impact of high combustion temperature on spray evaporation, two cases were investigated and compared. In the first case the spray evaporation is studied in a non-combusting environment. In the second it is investigated how the premixed combustion conditions affect droplet spray characteristics. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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