基于边界层理论和完整的边界条件，采用Collocation方法，推导出了沿倾斜壁面下降的在蒸发、等温和冷凝状态下普通适用的二维降膜拜表面波扰动时域演化方程， 并分析了不同因素的影响。结果表明：蒸发不利于稳定，冷凝有利于稳定， 在蒸发状态下，热毛细力导致其失稳，在冷凝状态下，则促进其稳定；表面张力不从有促进流动稳定的作用，液膜的稳定性随倾角和雷诺数的增大逐渐减小，随Ka数的增大逐渐加强；在小雷诺数下，液膜的稳定性主要取决于蒸汽压力和热毛细力的变化，在高雷诺数下，则取决于惯性力；流体物性和壁面倾角在一整个雷诺数范围内对液、膜的稳定性起着非常重要的作用。

深入研究了某热电厂450t/h循环流化床锅炉运行中炉膛布风板严重漏渣的问题，根据布风板稳定运行的基本原理以及锅炉结构和实际运行数据，对炉膛布风板的漏渣原因进行了理论分析，计算了布风板当量直径与床层高度的比值对流化床临界压降的影响，合理地解释了漏渣的机理，并计论了可能存在的炉膛布风板设计和运行上的原因。

提出了一种计算高温对流受热面管壁最高温度的校核算法，该方法基于局部能量和质量平衡的热力约束条件，与以往算法的主要区别是具有可校验性，因此计算结果更接近实际情况。文中叙述了该算法的原理，并以一实例说明其计算步骤，对计算的结果进行了讨论。该算法对改进高温对流受热面的壁温设计方法以及运行中壁温监测具有重要的实际价值。

A novel method for analyzing the heating of coal particles in a coal powder-laden jet in the near-burner region is proposed. This method takes into accout both the delay due to coal paricle unsteady heating and the induction period needed for the coal particle to ignite from the practical engineering point of view. A review of the flow and heating of coal partcles is preseted. The principle and analysis procedures for estimating the ignition heat and the heat balance are oulined. The advantage of the propsed method over the previous analyzing method which is based on the steady-state heat balance is also discussed. The influncing trends of various factors on the results are calculated and drawn in a group of diagrans. The calculating procedure is demonstrated by using an industrial swirl burner as data source. The predicted hot gases recirculating ratio is in geeral agreenent with the measurements on the physical model. This study offers a useful reference in engineering practice for improving burnher design and performance.

According to the heat balance principle, the boiler thermal calculation model based on the on-line operating data is presented. The on-line data filtering pretreatyment are built into the system. Effect of coal and boiler load variation are also taken into account. From the point of ecoomic operation of the unit, adequate detenmination of the desired cleaning factors are discussed in detail. This paper presents the design and implementation of an ash monitoring and sootblowing advisosry system for the 300 MW coal-fired boiler in Hengshui Power Station