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Engineering Fluid Dynamics 2021-2022

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "I: Energy Fundamentals and Conversion".

Deadline for manuscript submissions: closed (25 August 2022) | Viewed by 4448

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Department of Mechanical and Structural Engineering and Materials Science, Faculty of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway
Interests: process/chemical engineering; fluid mechanics and transport processes; industrial and environmental flows; multiphase chemical reactors; chemical reactions in turbulent flows; combustion hazards
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Special Issue Information

Dear Colleagues,

Over the last few decades, the use of computational fluid dynamics (CFD) and experimental fluid dynamics (EFD) methods have penetrated into all fields of engineering. CFD is now becoming a routine analysis tool for design in some fields (e.g., the aerodynamics of vehicles), and its implementation in other fields (e.g., chemical and marine application) is quickly being adopted. Additionally, in the last decade, open source software has had a tremendous impact on the use of CFD. Laser-based methods have also made significant improvements in the methods used to obtain data for the validation of the CFD codes.

The present Special Issue invites contributions on the topic of engineering fluid dynamics, of both experimental and computational studies. Of special interest are submissions from the fields of mechanical, chemical, marine, safety, and energy engineering. We welcome both original research articles and review articles.

Prof. Dr. Bjørn H. Hjertager
Guest Editor

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Keywords

  • chemical reactors
  • fluidized beds
  • bioreactors
  • combustors
  • wind turbines
  • offshore structures
  • open source CFD software
  • explosions
  • dispersion
  • fires
  • multiphase flows
  • laser doppler anemometry (LDA)/phase doppler anemometry (PDA)/laser doppler velocimetry (LDV)
  • particle image velocimetry (PIV)/planar laser induced fluorescence (PLIF)

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Published Papers (1 paper)

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Research

20 pages, 7436 KiB  
Article
Entrained-Flow Coal Gasification Process Simulation with the Emphasis on Empirical Char Conversion Models Optimization Procedure
by Jakub Mularski and Norbert Modliński
Energies 2021, 14(6), 1729; https://doi.org/10.3390/en14061729 - 20 Mar 2021
Cited by 7 | Viewed by 2923
Abstract
Computational fluid dynamics (CFD) modeling of an entrained-flow reactor is demonstrated and compared with experimental data. The study is focused on char conversion modeling and its impact on gasification simulation results. An innovative procedure of optimizing input data to empirical char conversion kinetic-diffusion [...] Read more.
Computational fluid dynamics (CFD) modeling of an entrained-flow reactor is demonstrated and compared with experimental data. The study is focused on char conversion modeling and its impact on gasification simulation results. An innovative procedure of optimizing input data to empirical char conversion kinetic-diffusion model is investigated, based on the complex carbon burnout kinetic model for oxidation (CBK/E) and gasification (CBK/G). The kinetics of the CBK/G model is determined using the data from char gasification experiments in a drop tube reactor. CFD simulations are performed for the laboratory-scale entrained-flow reactor at Brigham Young University for the bituminous coal. A substantial impact of applied kinetic parameters on the in-reactor gas composition and char conversion factor was observed. The effect was most considerable for the reduction zone, where gasification reactions dominate, although a non-negligible impact could also be observed in the flame zone. Based on the quantitative assessment of the incorporated optimization procedure, its application allowed to obtain one of the lowest errors of CO, H2, CO2, and H2O axial distribution with respect to the experimental data. The maximum errors for these species were equal to 18.48, 7.95, 10.15, and 20.22%, respectively, whereas the average errors were equal to 4.82, 5.47, 4.72, and 9.58%, respectively. Full article
(This article belongs to the Special Issue Engineering Fluid Dynamics 2021-2022)
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