不可压粘性绕流的求解采用了人工压缩性方法，其中对流项的离散应用了三阶迎风格式。
The hyperbolic equations were formulated by artificial compressibility method with the convective terms discreted using a third-order upwind scheme based on Roe's approximate Riemann solver.
然后利用矢量势和涡方程以及人工瞬变方法计算封闭腔中水的三维粘性自然对流。
Then, the vector potential and vorticity equations and the method of the false transient are applied to compute the three-dimensional viscous natural convection.
基于人工神经网络的改进BP算法，建立了大型燃煤锅炉对流受热面积灰结渣状况的预测模型。
The prediction model of slagging condition on the convection heating surfaces of large coal-fired boilers is built based on the improved BP algorithm.
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