平行平板间填充球粒填料的传热特性试验研究

• 来源期刊: 工程热物理学报
• 学科: 工学
• 关键词: 传热特性 球粒填料
• 年，卷（期）: 1999,（2）
• 页码范围: 220-223
• 页数: 4页
• 分类号: TK124
• 语种: 中文

摘要

THE PRESENT WORK SUMMED UP AND ANALYZED THE HEAT TRANSFER EXPERIMENT RESULTS INA CHANNEL BOUNDED BY PARALLEL PLATES FILLED WITH SPHERES. THE INVESTIGATION INDICATES THATUNDER A CERTAIN WIDTH OF THE CHANNEL, THE AVERAGE NUSSELT NUMBER IS NON-LINEAR WITH THESPHERE DIAMETER, WHICH IMPLIES THERE EXISTS OPTIMAL FILLING LAYER NUMBER. THE EXPERIMENTRESULT CONCLUDES, FILLED WITH SMALL SPHERES CAN GAIN BETTER HEAT TRANSFER ENHANCEMENT EFFECT,MEANWHILE THE FLOW RESISTANCE IS MUCH LESS THAN THE FLOW RESISTANCE WHEN F...