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为了使数值模拟试验研究得出的结果与实际情况相符,在模拟软件中对模拟参数的设置就显得非常重要.数值模拟试验中,当采用k-ε模型对流场进行数值模拟时,湍动能k和湍动能耗散率ε的值对流场解算结果有着重要影响.不同的湍动能和湍动能耗散率计算方法得出的k,ε值不同.对于局部通风流场,采用不同的湍动能和湍动能耗散率计算方法模拟解算结果不同.通过模拟k和ε分别采用3种方法计算时局部通风掘进工作面的流场分布,对比不同计算方法时各断面的最高风速、断面风量的解算结果,且与日本富田的试验结果进行比较,提出了局部通风流场适合采用的湍动能和湍流耗散率计算方法,为掘进工作面流场的研究提供了参考.
In order to make the result of numerical simulation experiment agree with the actual situation, it is very important to set the simulation parameters in the simulation software.In the numerical simulation, when the k-ε model is used to simulate the flow field, the turbulent kinetic energy k and turbulent kinetic energy dissipation rate ε have an important influence on the solution of the flow field.The k and ε values obtained by different turbulent kinetic energy and turbulent kinetic energy dissipation rate calculation methods are different.For the local ventilation flow field, Turbulent kinetic energy and turbulent kinetic energy dissipation rate calculation method of the simulation results are different.Three kinds of methods are used to calculate the flow field distribution of the local ventilation tunneling by simulating k and ε respectively.Comparing with the different calculation methods, the maximum wind speed, The solution of the air volume and the comparison with the test results of Tomita of Japan. The calculation method of turbulent kinetic energy and turbulence dissipation rate suitable for the local ventilation flow field is proposed, which provides a reference for the study of the flow field in the heading face.