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Search results for: NUMERICAL ERRORS

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Search results for: NUMERICAL ERRORS

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Search results for: NUMERICAL ERRORS

  • Laboratorium Badawcze 2-3

    Obliczenia komputerowe wymagające dużych mocy obliczeniowych z wykorzystaniem oprogramowania typu: Matlab, Tomlab, Gams, Apros.

  • Pracownia Fotogrametrii i Teledetekcji Niskiego Pułapu

    Business Offer

    W pracowni prowadzone są badania naukowe oraz zajęcia dydaktyczne z zakresu fotogrametrii cyfrowej i teledetekcji, szczególnie z niskiego pułapu czyli z bezzałogowych statków powietrznych. W ramach działań pracowni prowadzone są pomiary terenowe z użyciem nowoczesnych technik pomiarowych i bezzałogowych statków powietrznych, szkolenie lotnicze operatorów bezzałogowych statków powietrznych. Prace kameralne realizowane są na nowoczesnym...

  • Centrum Civitroniki – Centrum Zaawansowanych Technologii

    Centrum Civitroniki działa na Wydziale Inżynierii Lądowej i Środowiska Politechniki Gdańskiej. W skład Centrum Cicitroniki wchodzą następujące pracownie:Pracownia DIM-Tefal, Pracownia defektorskopii, badań materiału i konstrukcji metalowych, Pracownia geodezyjnego monitorowania budowli inżynierskich, Pracownia badań drogowych, Pracownia fizyki budowli oraz Nazwa Civitronika jest wynikiem połączenia wyrażeń: „civil engineering”...

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Search results for: NUMERICAL ERRORS

  • Balance errors in numerical solutions of shallow water equations

    Publication

    The analysis of the conservative properties of the shallow water equations is presented in the paper. The work focuses on the consistency of numerical solution of these equations with the conservation laws of mass and momentum. The investigations involve two different conservative forms which are solved by an implicit box scheme. The theoretical analysis supported by numerical experiments is carried out for rectangular channel...

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  • Balance errors generated by numerical diffusion in the solution of non-linear open channel flow equations

    Publication

    The paper concerns the untypical aspect of application of the dissipative numerical methods to solve nonlinear hyperbolic partial differential equations used in open channel hydraulics. It is shown that in some cases the numerical diffusion generated by the applied method of solution produces not only inaccurate solution but as well as a balance error. This error may occur even for an equation written in the conservative form not...

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  • Impact of the Finite Element Mesh Structure on the Solution Accuracy of a Two-Dimensional Kinematic Wave Equation

    Publication

    - Water - Year 2022

    The paper presents the influence of the finite element mesh structure on the accuracy of the numerical solution of a two-dimensional linear kinematic wave equation. This equation was solved using a two-level scheme for time integration and a modified finite element method with triangular elements for space discretization. The accuracy analysis of the applied scheme was performed using a modified equation method for three different...

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  • Balance error generated by numerical diffusion in the solution of Muskingum equation

    Publication

    - Year 2009

    In the paper the conservative properties of the lumped hydrological models with variable parameters are discussed. It is shown that in the case of the non-linear Muskingum equation the mass balance is not satisfied. The study indicates that the mass balance errors are caused by the improper form of equation and by the numerical diffusion which is generated in the solution. It has been shown that the classical way of derivation...

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  • Numerical solution of threshold problems in epidemics and population dynamics

    Publication

    A new algorithm is proposed for the numerical solution of threshold problems in epidemics and population dynamics. These problems are modeled by the delay-differential equations, where the delay function is unknown and has to be determined from the threshold conditions. The new algorithm is based on embedded pair of continuous Runge–Kutta method of order p = 4 and discrete Runge–Kutta method of order q = 3 which is used for the...

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