Multiphase Fluid-Particulate Systems

Fluid-particulate systems have a wide range of applications in chemical processing, energy production, pharmaceuticals, environment, etc. This research focuses on the development of tools, models, methods  for simulating dense fluid-particulate systems and their application.

Publications

Journal

1. Cao, Z., Tafti, D. K. and Shahnam, M. “Modeling drag force for ellipsoidal particle suspensions with preferential orientation,” J. Powder Tech. 378, Part A, Jan. 2021 pp. 274-287. https://doi.org/10.1016/j.powtec.2020.09.067
2. Muralidhar, N., Bu, J., Cao, Z., He, L., Ramakrishnan, N., Tafti, D.K. and Karpatne, A. “Physics-Guided Deep Learning for Drag Force Prediction in Dense Fluid-Particulate Systems”, Big Data 8(5) Oct 2020.431-449.          https://doi.org/10.1089/big.2020.0071
3. Cao, Z. and Tafti, D. K. “Fluid forces and torques in suspensions of oblate cylinders with aspect ratio 1:4,” Int. J. Multiphase Flow 131, Oct. 2020, 103394. https://doi.org/10.1016/j.ijmultiphaseflow.2020.103394
4. Cao, Z., Tafti, D. K. and Shahnam, M. “Development of Drag Correlation for Suspensions of Ellipsoidal Particles,” J. Powder Technology, vol. 369 (1), June 2020, pp. 298-310. https://doi.org/10.1016/j.powtec.2020.05.049
5. Cao Z. and Tafti D.K., “Investigation of drag, lift and torque for fluid flow past a low aspect ratio (1:4) cylinder,” Computers & Fluids 177, 30 Nov. 2018, pp. 123-135. https://doi.org/10.1016/j.compfluid.2018.10.002
6. He L, and Tafti D.K. “A Supervised Machine Learning Approach for Predicting Variable Drag Forces on Spherical Particles in Suspension,” Powder Technology 345 (2019) 379-389. https://doi.org/10.1016/j.powtec.2019.01.013
7. Elghannay, H. and Tafti D. K. and Yu, K, “Evaluation of physics based hard-sphere model with the soft sphere model for dense fluid-particle flow systems,” Int. Multiphase Flow 112, March 2019, pp. 100-115. https://doi.org/10.1016/j.ijmultiphaseflow.2018.12.004
8. Elghannay, H. and Tafti D. K., “Alternate Tangential Impact Treatments for the Soft-Sphere Collision Model,” Particulate Science and Technology, Jan. 2019 https://doi.org/10.1080/02726351.2018.1549173
9. He, L. and Tafti, D.K., “Variation of drag, lift and torque in an assembly of ellipsoidal particles,” Powder Technology 335, July 2018, 409–426. doi:10.1016/j.powtec.2018.05.031.
10. Elghannay, H. and Tafti D. K., “Revised Partial Coupling for in Fluid-Particulate Systems,” of Computational Multiphase Flows, August 4, 2018. https://doi.org/10.1177/1757482X18791885
11. He, L. and Tafti, D.K. “Heat Transfer in an Assembly of Ellipsoidal Particles at Low to Moderate Reynolds Numbers,” J. of Heat Mass Transfer 114, Nov. 2017, pp. 324-336. DOI: https://doi.org/10.1016/j.ijheatmasstransfer.2017.06.068
12. Elghannay, H. and Tafti D. K., “Sensitivity of Numerical Parameters on DEM Predictions of Sediment Transport” Particulate Science and Technology, vol. 36, pp. 438-446. http://dx.doi.org/10.1080/02726351.2017.1352638
13. He, L. and Tafti D. K. and Nagendra K, “Evaluation of Drag Correlations Using Particle Resolved Simulations of Spheres and Ellipsoid in Assembly,” Powder Technology 313, 15 May 2017, pp. 332-343. https://doi.org/10.1016/j.powtec.2017.03.020
14. Elghannay, H. A. and Tafti, D. K., “LES-DEM Simulations of Sediment Transport,” J. of Sediment Research vol 33, No. 2, June 2018, pp. 137-148. https://doi.org/10.1016/j.ijsrc.2017.09.006 Best Paper Award
15. Elghannay, H. and Tafti, D. K. “Development and Validation of a Reduced Order History Force Model,” Int. J. Multiphase Flow Volume 85, October 2016, Pages 284–297. http://dx.doi.org/10.1016/j.ijmultiphaseflow.2016.06.019
16. Nagendra, K. and Tafti, D. K., “A Sub-pore Model for Multi-Scale Reaction-Diffusion Problems in Porous Media,” Int. J. Heat Mass Transfer 84, May 2015, pp. 463-474. (doi:10.1016/j.ijheatmasstransfer.2014.12.034)
17. Deb, S. and Tafti, D. K., “Two and three dimensional modeling of fluidized bed with multiple jets in a DEM–CFD framework,” of Particuology 16, Oct. 2014, pp. 19-28. (doi:10.1016/j.partic.2014.04.005)
18. Deb, S. and Tafti, D. K., “Investigation of flat bottomed spouted bed with multiple jets using DEM-CFD framework,” Powder Technology Vol. 254, march 2014,pp.387-402.(doi: 1016/j.powtec.2014.01.045)
19. Deb, S. and Tafti, D.K., A Novel Two Grid Formulation for Fluid-Particle Systems using the Discrete Element Method, J. Powder Technology 246 (2013), pp. 601-616. (Doi:1016/j.powtec.2013.06.014)

Conference

1. Muralidhar, N., Bu, Jie., Cao, Ze., He, L., Ramakrishnan, N., Tafti, D., & Karpatne, A. “Physics-guided Design and Learning of Neural Networks for Predicting Drag Force on Particle Suspensions in Moving Fluids.” In Proceedings of the 2020 SIAM International Conference on Data Mining. Society for Industrial and Applied Mathematics.
2. Elghannay, H. and Tafti D. K., “Sensitivity of Numerical Parameters on DEM Predictions of Sediment Transport” Second International Conference and Exhibition on Powder, Granule and Bulk Solids: Innovations and Applications, December 1-3, 2016, Jaipur, Rajasthan, India.
3. Elghannay, H and Tafti, D. K., “Evaluation of Coarse Graining DEM Using Representative Particle Model,” Proceedings of the 7^th International Conference on Discrete Element Methods, Springer Proceedings in Physics, eds. Xikui Li, Yuntian Feng and Graham Mustoe, Vol. 188, pp 56-65. Aug. 1-Aug. 4, 2016, Dalian, China.
4. Elghannay, H, Yu, K and Tafti D.K.,”On the improvement of CFD-DEM Coarse Graining Predictions,” FEDSM2016-7805, Proceedings of the ASME 2016 Fluids Engineering Division Summer Meeting, July 10-14, 2016, Washington, DC, USA.
5. Elghannay, H. A. and Tafti, D. K., DEM Predictions of NETL small scale challenge problem, Proceedings of the ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting and 11th International Conference on Nanochannels, Microchannels, and Minichannels, Paper No. FEDSM2014-21032, August 3-7, 2014, Chicago, Illinois, USA.
6. Deb, S. and Tafti, D.K., Discrete Element Modeling and Validation of Fluidized Bed with Multiple Jets, ASME Summer Heat Transfer Conference, Puerto Rico, July 8-12, 2012.
7. Amritkar, A. and Tafti, D. K., Particle Scale Heat Transfer Analysis in Rotary Kiln, ASME Summer Heat Transfer Conference, Puerto Rico, July 8-12, 2012.