An application of in situ adaptive tabulation method in numerical simulation of gaseous detonation

DONG Gang; FAN Bao-chun; ZHU Min-ming; CHEN Yi-liang

doi:10.11883/1001-1455(2008)01-0075-05

Volume 28 Issue 1

Sep. 2014

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Article Navigation > Explosion And Shock Waves > 2008 > 28(1): 75-79

DONG Gang, FAN Bao-chun, ZHU Min-ming, CHEN Yi-liang. An application of in situ adaptive tabulation method in numerical simulation of gaseous detonation[J]. Explosion And Shock Waves, 2008, 28(1): 75-79. doi: 10.11883/1001-1455(2008)01-0075-05

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DONG Gang, FAN Bao-chun, ZHU Min-ming, CHEN Yi-liang. An application of in situ adaptive tabulation method in numerical simulation of gaseous detonation[J]. Explosion And Shock Waves, 2008, 28(1): 75-79. doi: 10.11883/1001-1455(2008)01-0075-05

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An application of in situ adaptive tabulation method in numerical simulation of gaseous detonation

doi: 10.11883/1001-1455(2008)01-0075-05

1.
Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China;
2.
Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230026, Anhui, China

Publish Date: 2008-01-25

Abstract

Abstract

To reduce the CPU time cost by reactive flow calculations, the direct integral (DI) of chemical reactions is replaced by an in situ adaptive tabulation (ISAT) method. The ISAT method with two enlargement criterions of calculated error is used to numerically simulate the gaseous detonation process for H2/O2 mixture. The calculated pressure, temperature and mass fractions of species by ISAT are compared with those by DI to verify the accuracy of the ISAT. The computed CPU time and find, enlargement and record process of data in ISAT, which represent the calculated efficiency of ISAT, are discussed. Compared with those by DI method, the calculated errors by ISAT method are no more than 3% and the calculated efficiency of ISAT is improved 8 times. It is concluded that the ISAT method shows the advantage in the calculations of detonation wave propagation.
- mechanics of explosion,
- accuracy and efficiency of chemical reactions,
- ISAT,
- detonation wave,
- direct integral,
- numerical simulation

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