SVIBOR - Papers quoted in CC - project code: 2-09-330
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SVIBOR - Collecting Data on Projects in Croatia
Papers quoted in Current Contents on project 2-09-330
Quoted papers: 6
Other papers: 27
Total: 33
Title: Autoparametric Resonance in an Externally Excited System
- Authors:
- Nebergoj, Radoslav
- Tondl, Aleš
- Virag, Zdravko (73376)
Journal: Chaos, Solitons & Fractals
Number: 2
ISSN: 0960-0779
Volume: 4
Year: 1994
Pages: from 263 to 273
Number of references: 7
Language: engleski
Summary: An example of autoparametric system with external
excitation isconsidered. We investigate the stability of the
semi-trivialsolution, that is the solution corresponding to the case with
anon-oscillating non-excited subsystem. It is found thatautoparametric
resonance stands when this semi-trivial solutionbecomes unstable. Within a
certain interval of the excitationfrequency, two locally stable solutions
exist: the semi-trivialand the non-trivial. For a given stationary solution
thepresented method permits one to determine the domains ofattraction of
the above solutions for given disturbances.
Keywords: nonlinear oscilations, autoparametric resonance, domain of attraction
Title: First Steps in the Calculation of Streamlines Close to the
Stagnation Point by Numerical Methods in the General Three-dimensional
Potential Flow
- Authors:
- Werner, Andreja (73380)
Journal: Strojarstvo
Number: 1,2
ISSN: 0562-1887
Volume: 37
Year: 1995
Pages: from 55 to 59
Number of references: 4
Language: hrvatski
Summary: Stagnation points are of fundamental importance in tracing
the system of streamlines which define a closed form. For the complicated
distributions of hydrodynamic singularities only numerical methods have to
be applied both for solving of problem. The velocity components vanish at
the stagnation point and the streamline differential equations take the
indeterminate form which results the difficulty in starting step of
numerical intergration algoritm. Three pairs of slopes, which represent the
roots of two symetric quadratic equations in two unknowns, show that
streamline entering the stagnation point branches at right angle. These
three pairs of slopes define the reference system whose axes are principal
- axes of the rate of deformation tensor.
Keywords: Numerical methods, Potential flow, Stagnation point, Streamlines.
Title: An improvement of the exponential differencing scheme for
solving the convection-diffusion equation
- Authors:
- Virag, Zdravko (73376)
- Trincas, Giorgio
Journal: ADVANCES IN ENGINEERING SOFTWARE
Number: 1
ISSN: 0965-9978
Volume: 19
Year: 1994
Pages: from 1 to 19
Number of references: 34
Language: engleski
Summary: In order to reduce false diffusion in numerical solutions
of the convection-diffusion equation both in orthogolan and body-fitted
coordinates, a simple differencing scheme suitable to the control-volume
method is proposed. The scheme is based on the one-dimensional exact
colution of the convection-diffusion equation with constant coefficients
and constant source term. Accuracy of the proposed scheme is assessed
through a number of test situations of pure convective and
convective-diffusive transport with known exact solutions. Results show
relevant accuracy improvements with respect to the popular exponential
differencing scheme (EDS). The proposed scheme is simple, accurate and easy
to implement in existing codes based on the EDS. The extension to
three-dimensional situations is straightforward.
Keywords: Convection-diffusion equations, Control-volume method, Body-fitted coordinates, Differencing scheme, False diffusion.
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