Host: The Japan Society of Mechanical Engineers
Name : The 30th International Conference on Nuclear Engineering (ICONE30)
Date : May 21, 2023 - May 26, 2023
Steam jet direct contact condensation is widely used in various fields due to its extremely high heat and mass transfer rate. The software FLUENT was employed to numerically study the direct contact condensation process of pure steam jet through square nozzle with different length-width ratios. The thermal equilibrium phase change model was inserted into FLUENT as a user defined function (UDF) to simulate the heat and mass transfer process in DCC. The results show that the shape of the plume under the condition of square nozzle jet is similar to that of round nozzle jet, and the distribution of axial thermal parameters is similar. For square nozzles with the same equivalent diameter, the peak velocity and jet penetration length increase with the increase of nozzle length width ratio. For square nozzles with the same short side length, the peak velocity and jet penetration length increase with the increase of nozzle length of the long side. However, when the length of the long side is greater than a certain value, further increasing the length of the long side has little effect on the jet penetration length.
