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WindLoad2D (CROSBI ID 771174)

Druge vrste radova | računalni programski paket

Travaš, Vanja WindLoad2D // www. 2011.

Podaci o odgovornosti

Travaš, Vanja

engleski

WindLoad2D

WindLoad2D is a program code developed to study the hydro-aerodynamic characteristics of two dimensional shapes i.e. solid profiles (e.g.: cross section of bridges, cross section of bridge piers, cross section of windshields, …). For this purpose the characteristic based split algorithm is used to numerically integrate the system of Navier-Stokes equations. The temporal discretization is performed in the traditional way by the finite difference method and the spatial discretization of the flow domain around the solid profile is discretized by finite elements. Particularly, the constant strain triangles are used for this purpose. In order to speed up the computational procedure and in a same time to allow the use of an unstructured mesh (with relatively small finite elements around zones of spatial interest), the local time stepping procedure is implemented. WindLoad2D support both explicit and implicit time integration. Thereby, the explicit time integration is executed through an original and dedicatedly developed procedure for matrix storage and matrix – vector multiplication which can considerably reduce the computational time. On the other hand, the system of equation obtained by implicit time integration is solved iteratively by the conjugate gradient method (with matrix preconditioning).

artificial viscosity; characteristic-based split; finite elements; fluid flow; local time stepping; Navier–Stokes equations

The program is written in FORTRAN95 and depending on the requirements of the industry ; it can be adapted for other uses and upgraded with new features.

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Podaci o izdanju

www

2011.

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objavljeno

Povezanost rada

Građevinarstvo, Temeljne tehničke znanosti