A Generalized Approach to the Analysis of Feed Unevenness in Displacement Pumps
- Authors: Shcherba V.E.1, Shalai V.V.1, Pavlyuchenko E.A.1
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Affiliations:
- Omsk State Technical University
- Issue: Vol 55, No 5-6 (2019)
- Pages: 402-411
- Section: Compressors, Pumps, and Pipeline Fittings
- URL: https://journals.rcsi.science/0009-2355/article/view/236588
- DOI: https://doi.org/10.1007/s10556-019-00637-2
- ID: 236588
Cite item
Abstract
A generalized approach to the analysis of feed unevenness in positive displacement pumps is considered. A procedure for calculating the working processes in chambers of constant or variable volume in a discharge line as well as a nonstationary one-dimensional gas flow in a discharge pipe is developed. Boundary conditions are defined. Nonstationary one-dimensional flow is calculated by the method of “characteristics.” By means of a numerical experiment, variations in the pressure in the working chambers and along the length of the pipe as a function of the turning angle of the shaft are established. On the basis of pressure fluctuation in a discharge pipe, it is proved that the feed unevenness significantly exceeds the magnitude of the feed unevenness determined when the pressure fluctuation is not taken into account.
About the authors
V. E. Shcherba
Omsk State Technical University
Author for correspondence.
Email: scherba_v_e@list.ru
Russian Federation, Omsk
V. V. Shalai
Omsk State Technical University
Email: scherba_v_e@list.ru
Russian Federation, Omsk
E. A. Pavlyuchenko
Omsk State Technical University
Email: scherba_v_e@list.ru
Russian Federation, Omsk