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PERFORMANCE EVALUATION OF TUBE-IN-TUBE HEAT EXCHANGERS WITH HEAT TRANSFER ENHANCEMENT IN THE ANNULUS
enhanced heat transfer in annulus spiraling tape insert spiraled tube
2009/10/13
Different techniques as angled spiraling tape inserts, a round tube in side a twisted square tube and spiraled tube inside the annulus have been used to enhance heat transfer in the annulus of tube-in...
柴油机功率强化前后气缸盖的温度场模拟与试验（Simulation and Experiment of Temperature Field on Diesel Engine Cylinder Head before and after Enhancement of Power）
柴油机 气缸盖 温度场
2009/5/22
对功率强化前后的柴油机分别进行了性能仿真计算，进而确定了缸盖温度场计算的边界条件；利用有限元软件对气缸盖进行三维稳态热分析，并考虑了冷却水沸腾换热的影响；在该柴油机的单缸试验机上进行了稳态温度场测量试验，分析了试验和计算结果；得到了火力面边界条件的设置规律、稳态温度场随工况的变化关系和单缸机与多缸机的稳态温度场差别。