TY - JOUR A1 - Pfeiffelmann, Björn A1 - Diederich, Michael A1 - Gül, Fethi A1 - Benim, Ali Cemal A1 - Heese, Markus A1 - Hamberger, Andreas T1 - Computational and Experimental Investigation of an Industrial Biomass Furnace JF - Chemical Engineering & Technology Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27747 SN - 1521-4125 VL - 43 IS - 8 SP - 1538 EP - 1546 PB - Wiley ER - TY - JOUR A1 - Deniz Canal, Cansu A1 - Boke, Yakup Erhan A1 - Aydin, Ozer A1 - Benim, Ali Cemal T1 - COMPUTATIONAL ANALYSIS OF PULVERIZED COAL CO-FIRING WITH BIOMASS IN 150MWe UNIT OF TUNCBILEK THERMAL POWER PLANT JF - Isi Bilimi ve Teknigi Dergisi - Journal of Thermal Science and Technology Y1 - 2021 U6 - https://doi.org/10.47480/isibted.979314 SN - 1300-3615 VL - 41 IS - 1 SP - 37 EP - 50 ER - TY - JOUR A1 - Benim, Ali Cemal A1 - Escudier, M. P. A1 - Nahavandi, A. A1 - Nickson, A. K. A1 - Syed, K. J. A1 - Joos, F. T1 - Computational analysis of incompressible turbulent flow in an idealised swirl combustor JF - Progess in Computational Fluid Dynamics, An International Journal Y1 - 2011 U6 - https://doi.org/10.1504/pcfd.2011.037571 VL - 11 IS - 1 SP - 42 EP - 45 PB - inderscience ER - TY - JOUR A1 - Benim, Ali Cemal A1 - Pfeiffelmann, Björn T1 - Comparison of Combustion Models for Lifted Hydrogen Flames within RANS Framework JF - Energies KW - DOAJ Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27727 SN - 1996-1073 VL - 13 IS - 1 PB - MDPI ER - TY - JOUR A1 - Pfeiffelmann, Bjorn A1 - Ozman, Cansu A1 - Benim, Ali Cemal A1 - Joos, Franz T1 - Analysis of the effect of nonuniform surface temperature distribution on the performance of a thermoelectric generator JF - Sustainable Energy Technologies and Assessments Y1 - 2022 U6 - https://doi.org/10.1016/j.seta.2022.102375 SN - 2213-1388 VL - 53 IS - A PB - Elsevier ER - TY - JOUR A1 - Pfeiffelmann, Björn A1 - Diederich, Michael A1 - Gül, Fethi A1 - Benim, Ali Cemal A1 - Hamberger, Andreas A1 - Heese, Markus T1 - Analysis of combustion, heat and fluid flow in a biomass furnace JF - E3S Web of Conferences KW - DOAJ Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27880 SN - 2267-1242 VL - 128 PB - edp sciences ER - TY - JOUR A1 - Benim, Ali Cemal A1 - Diederich, Michael A1 - Pfeiffelmann, Björn T1 - Aerodynamic Optimization of Airfoil Profiles for Small Horizontal Axis Wind Turbines JF - Computation KW - DOAJ Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-25143 SN - 2079-3197 VL - 6 IS - 2 PB - MDPI ER - TY - JOUR A1 - Benim, Ali Cemal A1 - Canal, Cansu Deniz A1 - Boke, Yakup Erhan T1 - A Validation Study for RANS Based Modelling of Swirling Pulverized Fuel Flames JF - Energies N2 - A swirling pulverized coal flame is computationally investigated. A Eulerian–Lagrangian formulation is used to describe the two-phase flow. Turbulence is modelled within a RANS (Reynolds averaged numerical simulation) framework. Four turbulence viscosity- (TV) based models, namely the standard k-ε model, realizable k-ε model, renormalization group theory k-ε model, and the shear stress transport k-ω model are used. In addition, a Reynolds stress transport model (RSM) is employed. The models are assessed by comparing the predicted velocity fields with the measurements of other authors. In terms of overall average values, the agreement of the predictions to the measurements is observed to be within the range 20–40%. A better performance of the RSM compared to the TV models is observed, with a nearly twice as better overall agreement to the experiments, particularly for the swirl velocity. In the second part of the investigation, the resolution of the discrete particle phase in modelling the turbulent particle dispersion (TPD) and particle size distribution (SD) is investigated. Using the discrete random walk model for the TPD, it is shown that even five random walks are sufficient for an accuracy that is quite high, with a less than 1% mean deviation from the solution obtained by thirty random walks. The approximation of the measured SD is determined by a continuous Rosin–Rammler distribution function, and inaccuracies that can occur in its subsequent discretization are demonstrated and discussed. An investigation on the resolution of the SD by discrete particle size classes (SC) indicates that 12 SC are required for an accuracy with a less than 1% mean deviation from the solution with 18 SC. Although these numbers may not necessarily be claimed to be sufficiently universal, they may serve as guidance, at least for SD with similar characteristics KW - DOAJ Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-37365 SN - 1996-1073 VL - 14 IS - 21 PB - MDPI ER - TY - JOUR A1 - Mabrouk, Riheb A1 - Naji, Hassane A1 - Benim, Ali Cemal A1 - Dhahri, Hacen T1 - A State of the Art Review on Sensible and Latent Heat Thermal Energy Storage Processes in Porous Media: Mesoscopic Simulation JF - Applied Sciences KW - DOAJ Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40343 VL - 12 IS - 14 PB - MDPI ER - TY - JOUR A1 - Benim, Ali Cemal A1 - Cicek, Aydin A1 - Eker, Arif Mert T1 - A numerical analysis of the thermohydraulics of an EGS project in Turkey JF - MATEC Web of Conferences Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-27910 SN - 2261-236X VL - 240 PB - edp sciences ER -