Modeling Effects on Numerical Simulation of Natural Gas Combustion with Highly Preheated Air

數值模擬天然氣伴隨高溫預熱空氣燃燒之模式效應

陳慶順(Ching-Shun Chen) ； 張鳳祥(Feng-Shyang Chang)

《中國航空太空學會學刊》 33卷1期 (2001/03) Pp. 17-22

https://doi.org/10.6124/TAASRC.200103_33(1).03

摘要

本研究針對燃氣爐膛中高溫預熱造氣與天然氣燃燒進行相關數值研究，模擬採用k-ε紊流模式、RSM紊流模式、無限快化學模式及DO熱輻射模式等進行研究，經由與實驗量測數據比對，結果發現使用RSM紊流模式及DO熱輻射模式與無限快化學模式進行計算，在火燄外部流場可獲得較好的預測結果。而使用k-ε紊流模式及DO熱輻射模式與無限快化學模式進行計算，在火燄內部流場可獲得較好的預測結果。

關鍵字

紊流模式 ； 高溫預熱空氣燃燒

並列摘要

In this study, numerical simulation of natural gas combustion with highly preheated air in a gas-fired furnace is performed. The predictions by using k-ε turbulence model, Reynolds stress model (RSM), fast chemistry model, and DO radiation model are investigated with comparison to recent measurements. As validated by experimental data, results show that Reynolds stress model in association with DO radiation model and fast chemistry model can perform better simulation than those of other models in out-flame flow-field. On the other hand, k-ε turbulence model in association with DO radiation model and fast chemistry model can perform better simulation in in-flame flow region.

並列關鍵字

Turbulence Model ； Highly Preheated Air Combustion