掘進巷道瓦斯爆炸動態數學模型及數值分析

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基金項目:

國家重點基礎研究發展計劃(973)資助項目(No.2005CB221506)

Dynamic mathematical model and numerical analysis of gas explosion in excavation roadway

1. Civil Engineering School, Hebei University of Engineering, Handan 056038, China;
2. Resources and Safety Engineering School, China University of Mining and Technology, Beijing 100083, China;
3. Economy and Management School, Hebei University of Engineering, Handan 056038, China;
4. Safety Training Department, North China Institute of Science and Technology, Beijing 101601, China

摘要: 根據爆炸力學、爆炸動力學和熱力學理論,建立了瓦斯爆炸流場三維動態數學模型.通過實驗和理論分析,研究了動態模型邊界條件的確定方法,并采用TVD格式數值方法對三維數學模型進行了數值解析.數值分析結果表明,當燃燒區壓力大到趨于爆轟狀態時,爆炸及其影響區域障礙物附近的壓力上升顯著,速度場發生顯著變化,燃燒區及非燃燒區均有障礙物的激勵效應存在.
- 瓦斯爆炸 /
- 流場 /
- 掘進巷道 /
- TVD格式 /
- 數值分析
Abstract: A 3-D dynamic mathematical model of gas explosion flow field was built based on explosion mechanics, explosion dynamic mechanics and thermodynamics. The way of boundary conditions defining was studied by experiment and theory analysis, and the total variation diminishing (TVD) was used to numerically solve the mathematical model. Numerical simulation results show that barricade excitation will be formed in combustion and other areas while the pressure is increased to detonation, and the fields of pressure and velocity around the barricade is greatly changed in the whole area of explosion.
- gas explosion /
- flow field /
- excavation roadway /
- total variation diminishing /
- numerical analysis