采用紊流射流理论推出了新的壁面射流计算公式，并在正确描述喷注贯穿的基础上建立了有涡流作用的空气卷吸模型。
The theory of turbulent jet has been employed to induce new formulas for wall jet, and on the base of correct spray penetration, air entrainment model in swirl field has been built.
主要改造部分有：水冷壁、燃烧器、省煤器、除尘设备、吸风机和粗粉分离器等。
The main transformed parts included water cooling wall, burner, coal saver, dust removing equipment, air suction machine and coarse powder separator.
通过仿真分析和正交优化设计可知该保险杠各构件的壁厚是影响其吸能能力的主要因素。
Simulation analysis and orthogonal optimal design indicated that thickness of the bumper 's components is the main factors affecting the energy-absorbing ability of the bumper.
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