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Author: Krzysztof Czajka

  • SCIENCE

    Recovery of sulfur dioxide from flue gas for sulphuric acid production

    • Kamila Jóźwiak
    • Krzysztof Czajka
    Science. Business. Society., Vol. 6 (2021), Issue 2, pg(s) 40-41
    • Abstract
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    The paper presents a review of the literature relative to the flue gas desulfurization methods for sulphuric acid (H2SO4) manufacturing. The covered topics include wet and dry methods. Particular attention has been paid to the desulfurization of the flue gas from the copper smelting industry that can lead to a generation of SOx rich streams resulting in high profitability of H2SO4 production.

  • TECHNOLOGIES

    Dynamic mesh adaption in shockwaves simulations

    • Krzysztof Ewertowski
    • Krzysztof Czajka
    Machines. Technologies. Materials., Vol. 15 (2021), Issue 8, pg(s) 306-308
    • Abstract
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    The goal of the article is to compare the accuracy and computational time of the shock wave simulations, using the stand ard, structured mesh and the dynamic mesh adaption. The coarse and fine mesh will be compared with the dynamically adapted mesh in terms of computational time and accuracy. Based on the results, histograms depicting computational time will be created. The simulation, on which those meshes will be examined will be a simple, two-dimensional oblique shock wave forming over a wedge inclined at 15°, with the Mach number at the domain inlet being equal to 2. The adaption will be based upon the pressure gradient criterion.

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