000150020 001__ 150020
000150020 005__ 20250130182919.0
000150020 0247_ $$2doi$$a10.1016/j.compfluid.2012.08.024
000150020 0248_ $$2sideral$$a79855
000150020 037__ $$aART-2012-79855
000150020 041__ $$aeng
000150020 100__ $$0(orcid)0000-0002-9310-7864$$aRezeau, Adeline
000150020 245__ $$aNumerical characterization of the aerodynamics in fixed-grate biomass burners
000150020 260__ $$c2012
000150020 5060_ $$aAccess copy available to the general public$$fUnrestricted
000150020 5203_ $$aThis paper investigates the numerical simulation of the aerodynamics of biomass burners operating in small-scale, fixed-grate technologies. The efficiency of these boilers is largely determined by the fluid patterns originated in the combustion chamber, as a consequence of the interaction of primary and secondary inlets. A set of CFD computations have been carried out for a case-study burner, seeking the comparison for the isothermal-flow solutions given by Reynolds Averaged Navier–Stokes equations (RANS) and by Unsteady RANS equations (URANS). The influence of both spatial and temporal discretization is discussed, using the Grid Convergence Index (GCI) based on Richardson extrapolation. The results indicate that RANS solutions are slightly more sensitive to grid parameters, while URANS solutions show a better convergence behavior. Validation has been reasonably achieved by comparing the URANS velocity profiles against experimental measurements. As a consequence, a mathematical tool is now available to support design modifications of the biomass burner, combining simplicity, reliability and economy.
000150020 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000150020 590__ $$a1.467$$b2012
000150020 591__ $$aMECHANICS$$b47 / 135 = 0.348$$c2012$$dQ2$$eT2
000150020 591__ $$aCOMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS$$b44 / 100 = 0.44$$c2012$$dQ2$$eT2
000150020 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000150020 700__ $$aRamírez, Juan A.
000150020 700__ $$aDíez, Luis I.
000150020 700__ $$0(orcid)0000-0003-4631-6994$$aRoyo, Javier$$uUniversidad de Zaragoza
000150020 7102_ $$15004$$2590$$aUniversidad de Zaragoza$$bDpto. Ingeniería Mecánica$$cÁrea Máquinas y Motores Térmi.
000150020 773__ $$g69, 30 (2012), 45-53$$pComput. fluids$$tComputers and Fluids$$x0045-7930
000150020 8564_ $$s534410$$uhttps://zaguan.unizar.es/record/150020/files/texto_completo.pdf$$yPostprint
000150020 8564_ $$s1345786$$uhttps://zaguan.unizar.es/record/150020/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000150020 909CO $$ooai:zaguan.unizar.es:150020$$particulos$$pdriver
000150020 951__ $$a2025-01-30-16:17:33
000150020 980__ $$aARTICLE