Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
권호 표지
DOI QR코드

DOI QR Code

DEVELOPMENT OF EULERIAN-GRANULAR MODEL FOR NUMERICAL SIMULATION MODEL OF PARTICULATE FLOW

Eulerian-Granular method를 사용한 고체 입자 유동 모델 개발

  • Lee, T.G. (Dept. of Mechanical Engineering, Hongik Univ.) ;
  • Shin, S.W. (Dept. of Mechanical and System design Engineering, Hongik Univ.)
  • 이태규 (홍익대학교 기계공학과) ;
  • 신승원 (홍익대학교 기계 시스템 디자인공학과)
  • Received : 2015.05.18
  • Accepted : 2015.06.17
  • Published : 2015.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we have developed numerical model for particulated flow through narrow slit using Eulerian-Granular method. Commercial software (FLUENT) was utilized as simulation tool and main focus was to identify the effect from various numerical options for modeling of solid particles as continuos phase in granular flow. Gidaspow model was chosen as basic model for solid viscosity and drag model. And lun-et-al model was used as solid pressure and radial distribution model, respectively. Several other model options in FLUENT were tested considering the cross related effect. Mass flow rate of the particulate through the slit was measured to compare. Due to the high volume density of the stacked particulates above the slit, effect from various numerical options were not significant. The numerical results from basic model were also compared with experimental results and showed very good agreement. The effects from the characteristics of particles such as diameter, angle of internal friction, and collision coefficient were also analyzed for future design of velocity resistance layer in solar thermal absorber. Angle of internal friction was found to be the dominat variable for the particle mass flow rate considerably. More defined 3D model along with energy equation for complete solar thermal absorber design is currently underway.

Keywords

References

  1. 2014, Hong, H., Peng. S., Zhao, Y., Liu, Q. and Jin, H., "A Typical Solar-coal Hybrid Power Plant in china," Energy Procedia, Vol.49, pp.1777-1783. https://doi.org/10.1016/j.egypro.2014.03.188
  2. 2014, Golob, M., Jeter, S., Abdel-Khalik, S.I., Sadowski, D., Al-Ansary, H. and El-Leathy, A., "Development and design prototype 300 kW-Thermal high temperature particle heating concentrator solar power system utilizing thermal energy storage," Proceedings ASME 2014 8th International Conference on Energy Sustainability and 12th Fuel Cell Science, Engineering and Technology Conference, Boston, USA.
  3. 2006, Chen, H., Chen, Y., Hsieh, H-T. and Siegel, N., "Computational fluid dynamics modeling of gas-particle flow within a solid-particle solar receiver," Journal of Solar Energy Engineering, Vol.129, pp.160-170.
  4. 2009, Grena, R., "Thermal Simulation of a Single Particle in a Falling-particle Solar Receiver," Solar Energy, Vol.83, pp.1186-1199. https://doi.org/10.1016/j.solener.2009.02.001
  5. 2010, Nathan P.S., Clifford, K.H., Siri, S.K. and Greogory, J.K., "Development and Evaluation of a Prototype Solid Particle Receiver : On-Sun Testing and Model Validation," Journal of solar energy engineering, Vol.132.
  6. 2015, Lee, T., Lim, S., Shin, S., Sasowski, D., Abdel-Khalik, S.I., Jeter, S. and Al-Ansary, H., "Numerical simulation of particulate flow in interconnected porous media for central particle-heating receiver applications," Solar Energy, Vol.113, pp.14-24. https://doi.org/10.1016/j.solener.2014.12.017
  7. ANSYS Academic Research, Help System, Fluent Theory Guide, ANsys Inc.
  8. 1992, Gidaspow, D., Bezburuah, R. and Ding, J., "Hydrodynamics of circulating fluidized beds: Kinetic theory approach," Proceedings of the Seventh Engineering Foundation Conference on Fluidization.
  9. 1984, Lun, C.K.K., Savage, S.B., Jeffrey, D.J. and Chepurniy, N., "Kinetic theories for granular flow: inelastic particles in couette flow and slightly inelastic paricles in a general flow field," J. Fluid Mech., Vol.140, pp.223-256. https://doi.org/10.1017/S0022112084000586