Modeling of Water Flows around a Circular Cylinder with the SPH Method

• Autorzy: Szmidt T. , Hedzielski B.

Identyfikatory

DOI

10.1515/heem-2015-0003

• Języki publikacji: EN

Abstrakty

EN

The paper describes the SPH modeling of a plane problem of fluid flow around a rigid circular cylinder. In the model considered, the cylinder is placed in a rectangular fluid domain at a certain distance from a horizontal plane boundary, and it is subjected to fluid flow forces. The fluid motion is induced by a piston type generator. The generator - fluid system starts to move from rest at a certain moment of time. The work aims at a discrete description of the fluid flow around the cylinder and, at the same time, calculation of the pressure distribution along the circumference of the cylinder and the resultant of the pressure on the cylinder. In order to solve the initial value problem considered, a new SPH formulation of boundary conditions on the cylinder surface is proposed which match the physical condition for the fluid velocity at this boundary. For a viscous fluid, an approximate description of the stress tensor is formulated which allows to reduce the differentiation of field functions to the first order in calculating the shear forces in the SPH approach.

Słowa kluczowe

EN

transient water wave; SPH modeling; boundary conditions; approximation of shear forces

• Wydawca: Institute of Hydro-Engineering of Polish Academy of Sciences
• Czasopismo: Archives of Hydro-Engineering and Environmental Mechanics
• Rocznik: 2014
• Tom: Vol. 61, nr 1-2
• Strony: 39--60
• Opis fizyczny: Bibliogr. 19 poz., rys.

Twórcy

autor

Szmidt T.

• Institute of Hydro-Engineering, Polish Academy of Sciences, ul. Koscierska 7, 80-328 Gdansk, Poland

autor

Hedzielski B.

• Institute of Hydro-Engineering, Polish Academy of Sciences, ul. Koscierska 7, 80-328 Gdansk, Poland

Bibliografia

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