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| UDF-Based Numerical Simulation of Natural Wind Pressure Influence on Guoluolongwa Mine Ventilation Stability |
| Received:September 24, 2013 Revised:September 27, 2013 |
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| DOI： |
| KeyWord:High altitude,Natural wind pressure;simulation,Ventilation system,Curve fitting,Compiling UDF |
| Author | Institution |
| ducuifeng |
北京科技大学土木与环境工程学院 |
| 潘浩 |
北京科技大学土木与环境工程学院 |
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| Abstract: |
| The gas-solid coupling model of mine ventilation system was built and meshed by applying Gambit software, taking Guoluolongwa Mine as the research object. UDFs of the original rock temperature in the radius of adjustable hot lap, air density, thermal conductivity and air viscosity were compiled. Natural wind pressure simulating results, which were simulated by employing Fluent software, were compared with the actual measured data, indicating that the numerical simulation about natural wind pressure is feasible. In order to explain the significant natural airflow changes in Guoluolongwa Mine roadways, the natural wind pressure under different environmental conditions were respectively simulated by changing temperature and boundary conditions. Meanwhile, the empirical formulas about natural wind pressure in the return air shaft were derived by using Origin software to fit the natural pressure curves under a variety of environmental temperature conditions. Consequently, the numerical simulation result provides reference for the study on mine ventilation at high altitudes. |
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