4 research outputs found
ΠΠ½Π°ΡΠΈΠΌΠΎΡΡΡ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠ°Π±ΠΎΡΡ ΠΊΡΡΠΏΠ½ΡΡ Π½Π°ΡΠΎΡΠ½ΡΡ ΡΡΠ°Π½ΡΠΈΠΉ
The article presents main design and structure principles of pumping stations. It specifies basic requirements for the favorable hydraulic operation conditions of the pumping units. The article also describes the designing cases, when computational modeling is necessary to analyse activity of pumping station and provide its reliable operation. A specific example of the large pumping station with submersible pumps describes the process of computational modeling of its operation. As the object of simulation was selected the underground pumping station with a diameter of 26 m and a depth of 13 m, divided into two independent branches, equipped with 8 submersible pumps. The objective of this work was to evaluate the effectiveness of the design solution by CFD methods, to analyze the design of the inlet chamber, to identify possible difficulties with the operation of the facility. In details are described the structure of the considered pumping station and applied computational models of physical processes. The article gives the detailed formulation of the task of simulation and the methods of its solving and presents the initial and boundary conditions. It describes the basic operation modes of the pumping station. The obtained results were presented as the flow patterns for each operation mode with detailed explanations. Data obtained as a result of CFD, prove the correctness of the general design solutions of the project. The submersible pump operation at the minimum water level was verified, was confirmed a lack of vortex formation as well as were proposed measures to improve the operating conditions of the facility. In the inlet chamber there are shown the stagnant zones, requiring separate schedule of cleaning. The measure against floating debris and foam was proposed. It justifies the use of computational modeling (CFD) for the verifying and adjusting of the projects of large pumping stations as a much more precise tool that takes into account all the features of the object compared to the empirical formulas.ΠΡΠΈΠ²ΠΎΠ΄ΠΈΡΡΡ ΡΠΎΠ²ΡΠ΅ΠΌΠ΅Π½Π½ΡΠΉ ΠΏΠΎΠ΄Ρ
ΠΎΠ΄ ΠΊ ΠΏΡΠΎΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΊΡΡΠΏΠ½ΡΡ
Π½Π°ΡΠΎΡΠ½ΡΡ
ΡΡΠ°Π½ΡΠΈΠΉ. ΠΠΏΠΈΡΡΠ²Π°Π΅ΡΡΡ ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠ²Π½ΠΎΠ΅ ΠΎΡΠΎΡΠΌΠ»Π΅Π½ΠΈΠ΅ Π·Π°Π³Π»ΡΠ±Π»Π΅Π½Π½ΠΎΠΉ ΡΡΠ°Π½ΡΠΈΠΈ Π΄ΠΈΠ°ΠΌΠ΅ΡΡΠΎΠΌ 26 ΠΌΠ΅ΡΡΠΎΠ², Π³Π»ΡΠ±ΠΈΠ½ΠΎΠΉ 13 ΠΌΠ΅ΡΡΠΎΠ², Ρ ΠΏΠΎΠ³ΡΡΠΆΠ½ΡΠΌΠΈ Π½Π°ΡΠΎΡΠ½ΡΠΌΠΈ Π°Π³ΡΠ΅Π³Π°ΡΠ°ΠΌΠΈ. ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ (CFD) ΠΊΠΎΠ½ΠΊΡΠ΅ΡΠ½ΠΎΠ³ΠΎ ΠΎΠ±ΡΠ΅ΠΊΡΠ°. ΠΡΠΎΠ²ΠΎΠ΄ΠΈΡΡΡ Π°Π½Π°Π»ΠΈΠ· ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π½ΠΎΠΉ ΠΏΡΠΎΠ΅ΠΊΡΠΎΠΌ ΠΏΡΠΈΠ΅ΠΌΠ½ΠΎΠΉ ΠΊΠ°ΠΌΠ΅ΡΡ Ρ ΡΠ΅Π»ΡΡ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΡΡ
ΠΏΡΠΎΠ±Π»Π΅ΠΌ ΠΏΡΠΈ ΡΠΊΡΠΏΠ»ΡΠ°ΡΠ°ΡΠΈΠΈ Π½Π°ΡΠΎΡΠ½ΠΎΠΉ ΡΡΠ°Π½ΡΠΈΠΈ ΠΈ ΠΏΡΠ΅Π΄Π»Π°Π³Π°ΡΡΡΡ ΠΌΠ΅ΡΡ Π΄Π»Ρ ΡΠ»ΡΡΡΠ΅Π½ΠΈΡ ΡΡΠ»ΠΎΠ²ΠΈΠΉ Π΅Π΅ ΡΠ°Π±ΠΎΡΡ. ΠΡΠΈΠ²Π΅Π΄Π΅Π½ΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΠ΅ ΡΠ°ΡΡΠ΅ΡΠ° ΠΌΠΈΠ½ΠΈΠΌΠ°Π»ΡΠ½ΡΡ
ΡΡΠΎΠ²Π½Π΅ΠΉ Π²ΠΎΠ΄Ρ Π² Π½Π°ΡΠΎΡΠ½ΡΡ
ΡΡΠ°Π½ΡΠΈΡΡ
ΠΏΠΎ ΡΠΌΠΏΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠΌ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΡΠΌ ΠΈ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΌΠ΅ΡΠΎΠ΄Π° Π²ΡΡΠΈΡΠ»ΠΈΡΠ΅Π»ΡΠ½ΠΎΠΉ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ. ΠΠ±ΠΎΡΠ½ΠΎΠ²Π°Π½ΠΎ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π΄Π»Ρ ΠΏΡΠΎΠ²Π΅ΡΠΊΠΈ ΠΈ ΠΊΠΎΡΡΠ΅ΠΊΡΠΈΡΠΎΠ²ΠΊΠΈ ΠΏΡΠΎΠ΅ΠΊΡΠΎΠ² ΠΊΡΡΠΏΠ½ΡΡ
Π½Π°ΡΠΎΡΠ½ΡΡ
ΡΡΠ°Π½ΡΠΈΠΉ ΠΊΠ°ΠΊ Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΠΎ Π±ΠΎΠ»Π΅Π΅ ΡΠΎΡΠ½ΠΎΠ³ΠΎ ΠΈΠ½ΡΡΡΡΠΌΠ΅Π½ΡΠ° ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ ΡΠΌΠΏΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠΌΠΈ ΡΠΎΡΠΌΡΠ»Π°ΠΌΠΈ, ΡΡΠΈΡΡΠ²Π°ΡΡΠ΅Π³ΠΎ Π²ΡΠ΅ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΠΎΠ±ΡΠ΅ΠΊΡΠ°. DOI: 10.7463/aplts.0415.081236
The Importance of Computational Modeling of Large Pumping Stations
The article presents main design and structure principles of pumping stations. It specifies basic requirements for the favorable hydraulic operation conditions of the pumping units. The article also describes the designing cases, when computational modeling is necessary to analyse activity of pumping station and provide its reliable operation. A specific example of the large pumping station with submersible pumps describes the process of computational modeling of its operation. As the object of simulation was selected the underground pumping station with a diameter of 26 m and a depth of 13 m, divided into two independent branches, equipped with 8 submersible pumps. The objective of this work was to evaluate the effectiveness of the design solution by CFD methods, to analyze the design of the inlet chamber, to identify possible difficulties with the operation of the facility. In details are described the structure of the considered pumping station and applied computational models of physical processes. The article gives the detailed formulation of the task of simulation and the methods of its solving and presents the initial and boundary conditions. It describes the basic operation modes of the pumping station. The obtained results were presented as the flow patterns for each operation mode with detailed explanations. Data obtained as a result of CFD, prove the correctness of the general design solutions of the project. The submersible pump operation at the minimum water level was verified, was confirmed a lack of vortex formation as well as were proposed measures to improve the operating conditions of the facility. In the inlet chamber there are shown the stagnant zones, requiring separate schedule of cleaning. The measure against floating debris and foam was proposed. It justifies the use of computational modeling (CFD) for the verifying and adjusting of the projects of large pumping stations as a much more precise tool that takes into account all the features of the object compared to the empirical formulas