Modelowanie zjawiska reakcji hydrodynamicznej przy pomocy MES

• Autorzy: Klarecki K. , Tomasiak E.

Warianty tytułu

EN

Modelling of hydrodynamic reaction with the FEM system

• Języki publikacji: PL

Abstrakty

PL

W artykule przedstawiono wyniki badań modelowych zjawiska reakcji hydrodynamicznej w zaworze suwakowym. W ich wyniku stwierdzono, że wartość reakcji hydrodynamicznej zależy od objętościowego natężenia przepływu i otwarcia.

EN

As a result of liquid's stream momentum change the forces in flow system occur. These forces, called hydrodynamic reaction, influence elements of the system in which flow performs. It's very essential to state the influence of hydrodynamic reaction of hydraulic valves behaviour because the reaction is a strong disturbance. The disturbance has to be taken into account during valve steering. Assuming that, one should notice, that the analysis of hydrodynamic reaction influence on hydraulic behaviour demands knowledge of a hydrodynamic reaction and the flow parameters. An initial research of hydrodynamic reaction occurrence was realized with the FEM software package "ALGOR 12". A flow through slider dividing valve at different openings and for different values of flow rate was modeled. The flow through a slider valve is almost axisymmetrical. That is the reason a flat FEM model of flow (2-D) consisted of axisymmetrical elements was assumed. Thanks to that the model size was minimized and the analysis of results was simplified. The following values of valve opening were assumed: 0, 1; 0, 2;0, 3 mm and 0, 4 mm. The values of flow rate were given by suitable selection of liquid speed values at valve inflow. After computing the pressure field in the valve, the value of hydrodynamic force was stated. On the base of obtained data the mathematical model of hydrodynamic reaction was created ( the estimation was executed with the software package "Statistica ver. 4. 5"). It was proved, that the model received is similar with a theoretical model (for constant angle of stream outflow theta.

Słowa kluczowe

PL

MES (metoda elementów skończonych); reakcja hydrodynamiczna; zawór suwakowy

EN

MES; hydrodynamic reaction; FEM system

• Wydawca: Katedra Budowy Maszyn. Politechnika Śląska
• Czasopismo: Prace Naukowe Katedry Budowy Maszyn / Politechnika Śląska
• Rocznik: 1999
• Tom: nr 2
• Strony: 99--108
• Opis fizyczny: Bibliogr. 4 poz.

Twórcy

autor

Klarecki K.

autor

Tomasiak E.

• Katedra Budowy Maszyn Politechnika Śląska, 44-100 Gliwice, ul. Konarskiego 18A tel. [phone],