In order to reveal the heat transfer characteristics of transparent soil materials,the relationship between normalized pixel intensity and temperature was established based on transparent soil column test,gray pixel image and thermal infrared image technology.On this basis,the heat transfer law of transparent soil under two transfer modes of top heat transfer and bottom heat transfer was analyzed.The results showed that there was a linear relationship between transparency and transparent soil temperature by establishing the normalized pixel intensity to reflect the transparency effect.With the increase of temperature,the transparent effect of transparent soil first increased and then decreased.When heated at the top,the transparent soil column showed uneven heat transfer characteristics,the edge temperature zone showed arc-shaped irregular fluctuations,and the heat core area was larger.When heated from the bottom,the transparent soil column was heated evenly,the edge temperature band was relatively flat and banded,and the heat core area was small.The heat transfer efficiency of top heating of transparent soil was faster than that of bottom heating.Regardless of the heat transfer mode,the temperature of transparent soil at the heating point changed nonlinearly under continuous heating,and the closer to the heat source,the more significant the phenomenon.
关键词
透明土/热传递/归一化像素强度/顶部传递/底部传递
Key words
transparent soil/heat transfer/normalized pixel intensity/top transfer/bottom transfer
维普
万方数据