局部通风流场模拟解算湍流模型k-ε值计算方法研究

Research on calculation methods of simulation calculating the turbulence model in auxiliary ventilation field

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 study the numerical simulation results responded with the actual situation, the set of simulation parameters in the simulation software is very important. Simulation experiment, when using the model to simulate the flow field, the turbulent kinetic energy κ and turbulent kinetic energy dissipation rate ε of the value of the flow field solver results have an important impact. Different turbulent kinetic energy and turbulent kinetic energy dissipation rate calculation derived κ,ε values are different. For auxiliary ventilation air- flow, using different turbulent kinetic energy and turbulent kinetic energy dissipation rate of the results of different simulation solver. Through simulations k and three methods were used when the heading face of local ventilation flow field and compared the different methods section when the maximum wind speed, air volume calculating section results, and with the Japanese Tomita （tomita） of the test results were compared with airflow made suitable for the local turbulent kinetic energy and turbulent dissipation rate calculation. The study provides a reference value for the heading face of the flow field.