Simulation of Cavitation Erosion in a Hydraulic Valve

Abstract

This paper presents a numerical simulation of cavitation of a non-return hydraulic valve. Cavitation is one of the most common reasons of hydraulic system failures or malfunctioning. Due to complex geometry and flow path which may rapidly change, hydraulic valves are exposed to a cavitation phenomenon. Additionally, hydraulic fluid always includes contaminants including dissolver air, which may accelerate nucleation formation. Despite the fact that cavitation is not a fully discovered phenomenon, an attempt of simulation of cavitation process was taken using computational fluid dynamics (CFD) tools.

Microstructure and Tribological Properties of DLC Coatings

“…Due to its unique and characteristic properties, DLC coatings can be used wherever hardness, wear resistance, slipperiness are required, so primarily hydraulic parts [13], including those heavily mechanically [14][15][16] and thermally [17][18][19], as well as exposed to cavitation erosion [20]. The introduction of DLC coatings favorably changes the operational features of machine parts, and in particular reduces the number of failures and non-conformities, which has a great impact on the planning and optimization of production in many industries, such as power plants [21], production of industrial and consumer films [22] and parts of industrial robots [23].…”

Phase Change Heat Exchangers Made of Pin-Fins for Boiling Enhancement

“…Further tests on different boiling agents are necessary and could increase the experimental database on the considered issue. The research methodology applied in this research may be inspiring for other researcher, especially focused on fluid flow (Domagala et al, 2018a;Domagala et al, 2018b), on hydraulic components of heavy-duty machines (Filo et al, 2018a;Filo et al, 2018b;Krawczyk and Sobczyk, 2018) and their possible failures (Fabis- Domagala et al, 2018). Methods allowing fast and effective boiling should be also of interest for a combustion technology (Opydo et al, 2016), power plant branch (Dwornicka, 2014) and biotechnology sector (Skrzypczak-Pietraszek et al, 2018).…”

Trends in Rapid Prototyping and Smart Engineering for Central Europe Based on the 3DCentral Project

“…The considerations and results presented in this paper ay be very useful for researchers in any scientific area, especially in applied sciences e.g. biotechnology (Skrzypczak-Pietraszek et al, 2018), materials science (Lipinski, 2010;Szczotok et al, 2018), machining (Ulewicz and Selejdak, 2018), special coating (Pliszka et al, 2018;Radek et al, 2018a;Radek et al, 2018b) or machine building (Pacana and Pacana, 2018), especially heavy-duty (Domagala et al, 2018a;Domagala et al, 2018b;Fabis-Domagala et al, 2018) where safety is critical issue. Mutual checking of proposed models is important in rapidly developing scientific area known as "surrogate models": creation of simpler model derived from more complex, but also numerically simulated (Gadek-Moszczak et al, 2015;Pietraszek et al, 2016;Filo et al, 2018;Osocha, 2018).…”