| Extending the bubble-based EMMS model to CFB riser simulations K Hong, Z Shi, A Ullah, W Wang Powder technology 266, 424-432, 2014 | 42 | 2014 |
| An Overview of Eulerian CFD Modeling and Simulation of Non-Spherical Biomass Particles A Ullah, K Hong, Y Gao, A Gungor, M Zaman Renewable Energy 141, 1054-1066, 2019 | 39 | 2019 |
| Thermodynamic analysis and optimization of double effect absorption refrigeration system using genetic algorithm MU Arshad, MU Ghani, A Ullah, A Güngör, M Zaman Energy Conversion and Management 192, 292-307, 2019 | 39 | 2019 |
| Thermo-economic analysis of integrated gasification combined cycle (IGCC) power plant with carbon capture HM Sheikh, A Ullah, K Hong, M Zaman Chemical Engineering and Processing - Process Intensification 128, 53-62, 2018 | 39 | 2018 |
| CFD study of pressure loss characteristics of multi-holed orifice plates using central composite design MA Mehmood, MA Ibrahim, A Ullah, MH Inayat Flow Measurement and Instrumentation 70, 101654, 2019 | 34 | 2019 |
| Multi-scale CFD modeling of gas-solid bubbling fluidization accounting for sub-grid information K Hong, Y Gao, A Ullah, F Xu, Q Xiong, G Lorenzinie Advanced Powder Technology 29 (3), 488-498, 2018 | 32 | 2018 |
| Bubble-based EMMS mixture model applied to turbulent fluidization A Ullah, K Hong, S Chilton, W Nimmo Powder technology 281, 129-137, 2015 | 28 | 2015 |
| Effect of turbulence modeling on hydrodynamics of a turbulent contact absorber A Ullah, A Amanat, M Imran, SSJ Gillani, M Kilic, A Khan Chemical Engineering and Processing - Process Intensification 156, 108101, 2020 | 22 | 2020 |
| Evaluation of drag models for cocurrent and countercurrent gas–solid flows A Ullah, W Wang, J Li Chemical engineering science 92, 89-104, 2013 | 21 | 2013 |
| EMMS mixture model with size distribution for two-fluid simulation of riser flows A Ullah, I Jamil, A Hamid, K Hong Particuology, 165-173, 2017 | 16 | 2017 |
| Thermo-economic analysis of integrated gasification combined cycle co-generation system with carbon capture and integrated with absorption refrigeration system M Adnan, M Zaman, A Ullah, M Rizwan, N Ramzan Energy Conversion and Management 248, 114782, 2021 | 14 | 2021 |
| Turbulence dissipation & its induced entrainment in subsonic swirling steam injected in cocurrent flowing water A Khan, MS Takriff, MI Rosli, NTA Othman, K Sanaullah, ARH Rigit, ... International Journal of Heat and Mass Transfer 145, 118716, 2019 | 14 | 2019 |
| Thermo-economic analysis of integrated gasification combined cycle co-generation system hybridized with concentrated solar power tower M Adnan, M Zaman, A Ullah, A Gungor, M Rizwan, SR Naqvi Renewable Energy 198, 654-666, 2022 | 13 | 2022 |
| A numerical study of sedimentation of rod like particles using smooth profile method A Hamid, AB Arshad, S Mehdi, MD Qasim, A Ullah, JJ Molina, ... International Journal of Multiphase Flow 127, 103263, 2020 | 13 | 2020 |
| Evaluation of multi-holed orifice flowmeters under developing flow conditions – An experimental study A Raheem, ASB Siddiqi, A Ibrahim, A Ullah, MH Inayat Flow Measurement and Instrumentation, 101894, 2021 | 12 | 2021 |
| CFD study of drag and lift coefficients of non-spherical particles A Ullah, MB Zaman, MA Bhatti, D Qasim, A Hamid, Q Xiong, A Khan Journal of King Saud University-Engineering Sciences, 2021 | 11 | 2021 |
| “Generalized fluidization” revisited A Ullah, W Wang, J Li Industrial & Engineering Chemistry Research 52 (33), 11319-11332, 2013 | 11 | 2013 |
| CFD-based estimation of collision probabilities between fine particles and bubbles having intermediate Reynolds number M Nadeem, J Ahmed, IR Chughtai, A Ullah Nucleus 46 (3), 153-159, 2009 | 11 | 2009 |
| Numerical Investigation of Effect of Different Parameter on Heat Transfer for a Crossflow Heat Exchanger by Using Nanofluids M Kılıç, A Ullah Journal of Thermal Engineering 7 (8), 1980-1989, 2021 | 10 | 2021 |
| Natural Convection Heat Transfer in an Enclosed Assembly of Thin Vertical Cylinders – A CFD Study F Shafiq, A Ullah, M Nadeem, A Khan, A Ullah Chemical Engineering and Technology 43 (8), 1-12, 2020 | 10 | 2020 |
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