Experimental study on bubble dynamics for wall boiling model through high-speed infrared thermometry

The wall boiling model, which is actually a complex system and consists of many sub-models related to bubble dynamics, plays a vital role in accurately simulating the boiling phenomenon with CFD codes. In recent years, as the modeling becomes more detailed, more bubble behavior has been considered, and more sub-models have been introduced. However, due to the lack of the ability to measure the temperature near the bubbles with high resolution in the early years, some of the assumptions of temperature distribution and heat transfer proposed in these sub-models lack validation. Fortunately, recent advances in high-speed infrared thermometry allow researchers to measure the temperature of the regions where bubbles form, which helps them better understand heat transfer mechanisms and then make improvements on the wall boiling model.