CFD SIMULATION AND EXPERIMENTAL VALIDATION OF PARTICLE DEPOSITION ON WAVY FIN-AND-TUBE HEAT EXCHANGER
As the dust particle deposition on wavy fin-and-tube heat exchangers may increase the pressure drop and deteriorate the heat transfer performance,a numerical model for predicting the particle deposition rate was developed in this paper.In the model,the particle trajectories were calculated by the model of particle transportation; the particle deposition rate on wavy fins was obtained by the model of particle-wall impact; the particle deposition rate on fouling layer was obtained by the model of particle-fouling layer impact.A visual experimental rig was set up to validate the numerical model by comparing the particle distribution and the particle deposition rate.The validation results show that the predicted particle distribution on wavy fins can qualitatively agree with the visualization images; the predicted particle deposition rate can describe 88%of the experimental data within the deviation limit of ±20%.
Heat exchanger Particle deposition Particle removal Wavy fin Numerical model
Zhan Feilong Zhuang Dawei Ding Guoliang Tang Jiajun
Institute of Refrigeration and Cryogenics,Shanghai Jiao Tong University,Shanghai 200240,China
国内会议
珠海
英文
135-141
2016-11-01（万方平台首次上网日期，不代表论文的发表时间）