Analysis of Results of Theoretical and Experimental Studies of the Influence of Radial Gaps in Stepped Slot Seal of Piston Hybrid Energy-Generating Machine

The article considers the calculation of the flow of a viscous incompressible fluid in piston seals of piston hybrid power machines. The most widely used and effective seals are considered: a smooth gap seal and a step-type gap seal, and—based on the references analyses—the initial boundary conditions for their calculation are determined. The laminar and turbulent flows in gap seals are calculated based on the well-known analytical relationships, experimental studies and flow models, including the k-ε, Menter’s Shear StressTransport (SST) and Reynolds Stress (RSM) turbulence models. The effectiveness of using each model to determine average velocities, flow rates, and velocity plots in the cross section of a gap seal, as well as the adequacy of the description of known physical laws, is estimated. The results proved that the RSM turbulence model is better for the gap seals of different types under different modes of motion.

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“…This effect can be achieved in various constructive ways. [18][19][20][21][22]. We consider the main ones.…”

Section: Analysis Of the Main Types Of Piston Seals Used In Phpmmentioning

confidence: 99%

“…For a step-type seal using the equality of volumetric flow rates in the narrow and wide parts of the piston seal we obtain the following Equation for pressure p 3 : (21) and flow:…”

Section: Turbulence Models Sstmentioning

confidence: 99%

Calculation of the Incompressible Viscous Fluid Flow in Piston Seals of Piston Hybrid Power Machines

et al. 2020

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“…This fact calls for research to determine optimal parameters of these design features, and also their accounting in verifying design and experimental characteristics of axial pumps. Certain works note also significant effects of radial clearance and rim on parameters of axial pumps with low specific speed [2,3] and other machines [4,5].…”

Section: Introductionmentioning

confidence: 99%

Effects of an Impeller Rim and Radial Clearance on Energy Characteristics of an Axial Pump

et al. 2021

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The results of numerical and experimental research conducted in the Laboratory for Hydraulic Machinery Construction of Peter the Great St. Petersburg Polytechnic University are presented. The research is aimed at studying the effects of an impeller radial clearance and rim on the energy characteristic of low-pressure axial pumps of the specific speed ns≈600. It is shown that these design features of a flow duct have significant effects on stage parameters, and they have to be accounted for when verifying design and experimental characteristics of axial pumps.

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Stand for Life Tests of Plunger Hydraulic Cylinders. Modeling and Calculation

Pelipenko

Rybak

Sarkisian

et al. 2021

XIV International Scientific Conference “INTERAGROMASH 2021"

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Analysis of Results of Theoretical and Experimental Studies of the Influence of Radial Gaps in Stepped Slot Seal of Piston Hybrid Energy-Generating Machine

Cited by 5 publications

References 1 publication

Calculation of the Incompressible Viscous Fluid Flow in Piston Seals of Piston Hybrid Power Machines

Calculation of the Incompressible Viscous Fluid Flow in Piston Seals of Piston Hybrid Power Machines

Effects of an Impeller Rim and Radial Clearance on Energy Characteristics of an Axial Pump

Stand for Life Tests of Plunger Hydraulic Cylinders. Modeling and Calculation

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