Knowledge Management System of Institue of Mechanics, CAS
| Reconsideration On The Role Of The Specific Heat Ratio In Arrhenius Law Applications | |
Liu YF(刘云峰) ; Jiang ZL(姜宗林); Liu, YF (reprint author), Chinese Acad Sci, Inst Mech, Key Lab High Temp Gas Dynam, Beijing 100080, Peoples R China.
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| Source Publication | Acta Mechanica Sinica
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| 2008 | |
| Pages | 261-266 |
| ISSN | 0567-7718 |
| Abstract | Arrhenius law implicates that only those molecules which possess the internal energy greater than the activation energy E-a can react. However, the internal energy will not be proportional to the gas temperature if the specific heat ratio gamma and the gas constant R vary during chemical reaction processes. The varying gamma may affect significantly the chemical reaction rate calculated with the Arrhenius law under the constant gamma assumption, which has been widely accepted in detonation and combustion simulations for many years. In this paper, the roles of variable gamma and R in Arrhenius law applications are reconsidered, and their effects on the chemical reaction rate are demonstrated by simulating one-dimensional C-J and two-dimensional cellular detonations. A new overall one-step detonation model with variable gamma and R is proposed to improve the Arrhenius law. Numerical experiments demonstrate that this improved Arrhenius law works well in predicting detonation phenomena with the numerical results being in good agreement with experimental data. |
| Keyword | Arrhenius Law Detonation Specific Heat Ratio Cellular Detonations |
| DOI | 10.1007/s10409-008-0137-2 |
| Indexed By | SCI ; EI ; CSCD |
| Language | 英语 |
| WOS ID | WOS:000256083800004 |
| WOS Keyword | CELLULAR DETONATIONS |
| WOS Research Area | Engineering ; Mechanics |
| WOS Subject | Engineering, Mechanical ; Mechanics |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/26040 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Liu, YF (reprint author), Chinese Acad Sci, Inst Mech, Key Lab High Temp Gas Dynam, Beijing 100080, Peoples R China. |
| Recommended Citation GB/T 7714 | Liu YF,Jiang ZL,Liu, YF . Reconsideration On The Role Of The Specific Heat Ratio In Arrhenius Law Applications[J]. Acta Mechanica Sinica,2008:261-266. |
| APA | 刘云峰,姜宗林,&Liu, YF .(2008).Reconsideration On The Role Of The Specific Heat Ratio In Arrhenius Law Applications.Acta Mechanica Sinica,261-266. |
| MLA | 刘云峰,et al."Reconsideration On The Role Of The Specific Heat Ratio In Arrhenius Law Applications".Acta Mechanica Sinica (2008):261-266. |
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