Large-eddy simulation has been used to model the atmospheric boundary layer flowing through a span-wise periodic array of wind turbines. The wind turbines are modelled using a coupled simulation in which the FAST wind turbine simulation code from NREL operates within a CFD environment. The wind turbines are implemented in the flow-field using the actuator sector technique, and operate dynamical...

the present study is concerned with measuring and simulating soot formation and combustion in turbulent liquid fuel spray flames. soot concentrations inside the combustor are measured by filter paper technique. the simulation is based on the solution of the fully-coupled conservation equations for turbulent flow, chemical species kinetic modeling, fuel droplet evaporation and combustion and soo...

We employ a two-fluid model (TFM) as well computational fluid dynamics coupled to discrete element method (CFD-DEM) approach study the time averaged hydrodynamics of single- and multiple-spout fluidized beds. Simulations are validated against experimental data (van Buijtenen et al., Numerical on beds, Chemical Engineering Science 66 (2011) 2368–2376) with four different interphase drag correlat...

The University of California in collaboration with West Biofuels, LCC, has developed an advanced thermochemical gasification system (5 ton/day) for the conversion of waste stream biomass for the production of bio-fuels and bio-energy. The “Pyrox” gasifier design is based on a dual-fluidized bed system operating at atmospheric pressure with air. Simulation of this gasifier was conducted with a n...

The high importance of indoor environment performance aspects such as surface condensation, mold growth, thermal comfort, etc., is widely recognized. High-resolution simulation of heat, air and moisture (HAM) transfer can be used to enhance the prediction and analysis of these aspects. For this purpose, a coupling mechanism has been developed in order to perform run-time external coupling betwe...

The contemporary status of computational flow modelling encourages strongly the application of modern CFD codes on the design and investigation of process equipment and aims to accomplish novel and stringent environmental regulations on the decontamination of high strength wastewaters. The application of CFD is envisaged as a prevailing tool to gain more control in the delivery of reactants or ...

Two multiscale computational frameworks are proposed for coupling/linking the co-existing scales in chemical vapor deposition (CVD)processes: From the macro-scale of a CVD reactor (~cm or m) to the transport inside micro-features (~μm) and kinetic Monte Carlo techniques in the nano-scale (~nm). To accelerate the computations parallel processing techniques are used. Moreover, a computational fra...

Despite the wide-spread applications of spray drying in production chemicals, food, and pharmaceuticals, accurate control development this unit remains an elusive task because complex interactions variables phenomena. In paper, we offer a computationally efficient closed-loop system with model predictive controller (MPC) where computational fluid dynamics (CFD) process is utilized to represent ...

This paper highlights the use of the CAPE-OPEN (CO) standard interfaces in the Advanced Process Engineering Co-Simulator (APECS) developed at the National Energy Technology Laboratory (NETL). The APECS system uses the CO unit operation, thermodynamic, and reaction interfaces to provide its plug-and-play co-simulation capabilities, including the integration of process simulation with computation...

This paper reports the result of CFD simulation of catalytic oxidation of benzene on monolithic catalyst. The geometries ofthe catalyst and reactor were designed in Gambit <span style="font-size: 10pt;...