A Geometric Multigrid Solver for the Piston–Cylinder Interface of Axial Piston Machines

Analysis of the flow dynamics characteristics of an axial piston pump based on the computational fluid dynamics method

“…In addition, flow ripple testing has been studied using a secondary source method and more recently the source admittance method (Ericson & Palmberg, 2007). In 2012, Pelosi and Ivantysynova (2012) created a geometric multi-grid scheme for the solution of the Reynolds equation in the piston-cylinder interface of an axial piston machine.…”

Hydrodynamic Processes in Piston–Bore Interface of Axial Piston Swash Plate Machine

“…Calculations can be more accurate while solving a complex system, M. Pelosi [6] model for example, with smaller steps values of pressure peaks reduce, while the order stays approximately the same. When the piston has no speed towards or backwards (it is situated at the dead centers), pressure peaks values on the outer edge of the bushing for sliding motion repeatedly exceed pressure that is formed by motion without sliding.…”

“…Y. Fang and M. Shirakashi [5] described conditions of metal contact in the piston-bore interface and a way to express characteristics of mixed lubrication. M. Pelosi [6] in his work solved a problem of piston-cylindrical bore interaction using elasthydrodynamic theory that allowed obtaining more accurate results of the fluid film in loaded conditions. However, this model is calculated for high machine shaft rotation frequency (100 rad/s).…”

“…Pelosi also examined this case in his simulation model [6]. For the other type of motion formula (2) should be applied, while…”

“…Slyozkin [1], M. Pelosi [6] Y.Fang and M. Shirakashi [5] and other authors presented equation system was integrated without considering members of second order of smallness and members including the factor ∂u/∂x. However, while formulating more accurate simulation models, considering deformations of mating surfaces of the elements of the piston mechanism and operating fluid viscosity change, it is also worth considering the following components.…”