A boundary condotions at modeling 1-D pulsating flows in pipes according to the method of characteristics

• Autorzy: Pałczyński T.
• Języki publikacji: EN

Abstrakty

EN

At this paper, there were compared three conceptions of boundary conditions and their definition at partially opened pipes. This is typical at inlet and exhaust pipes of internal combustion engines and piston compressors. At an introduction there were listed the current state of affairs at a one dimensional modelling pulsations according to the Method of Characteristics (MOC). Subsequently, there was presented the main idea of MOC. At the third chapter there were presented general guidelines at initial and boundary conditions definition. Next there are three descriptions of the analyzed problem. Firstly, there was presented partially open end phenomena at space and stage plane. Secondly, there was shown the theory of acoustic wave propagation with description of stage waves at analyzed ends of pipe. Lastly, there is a new conception of constant pressure valve boundary conditions, which is the synthesis of the both mentioned earlier. At the fourth paragraph there was shortly presented existing test rig dedicated to research of pulsating flow in pipes. This test rig was built at Flow Metrology Division of Lodz University of Technology [9]. At the second part of this chapter there were shown main assumption of elaborated simulation algorithm at Matlab Simulink environment. Lastly there were discussed simulation results compared with presented conceptions of boundary conditions.

Słowa kluczowe

EN

1D simulations; Valve boundary conditions; method of characteristics; pulsating flow at pipes

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2012
• Tom: Vol. 19, No. 2
• Strony: 395--402
• Opis fizyczny: Bibliogr. 13 poz., rys.

Twórcy

autor

Pałczyński T.

• Lodz University of Technology Institute of Turbomachinery Wolczanska Street 219/223, 90-924 Lodz, Poland tel.: [phone], fax: [phone],

Bibliografia

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