Numerical Investigation of Air Flow Distribution in a Swirling Fluidized Bed
Swirling fluidized bed (SFB) is one of the recent technologies developed in fluidization to overcome various drawbacks in the conventional fluidized beds,particularly poor lateral mixing and relatively high distributor pressure drop.Though a number of beds operating with similar technique are commercially available,very little has been published on the subject,particularly on the distributor design.The distributor of the SFB is formed by an array of blades which are inclined to the horizontal,with a centre body in the middle of the bed.Air flow investigation was carried out on the empty bed via CFD approach.The study focused on the effects of number of blades and its inclination angle on the flow distribution and pressure drop,so as to arrive at an optimum choice of the distributor design.The findings indicate that higher number of has lower open area which resulted higher jet velocity of air from the distributor.Blade inclination has significant effect on the flow distribution where lower blade inclination produces higher magnitude of tangential velocity that creates intense swirling but at an expense of higher pressure drop.In conclusion,the distributor with 30 blades and 15° inclination was found to meet the design criterion outlined.
Swirling fluidized bed Fluidization Uniformity of flow Pressure drop Numerical simulation
Mohd Faizal Suzairin Md Seri Sh.Ezamuddin Vijay R.Raghavan
Energy Technologies Research Group, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja,Johor, Mal Energy Technologies Research Group, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja,Johor, Mal Dept.of Mechanical Engineering, Univeristi Teknologi Petronas, 31750 Tronoh, Perak, Malaysia
国际会议
杭州
英文
132-137
2012-03-23（万方平台首次上网日期，不代表论文的发表时间）