Thermal-hydraulic modeling and analysis of spool valve with sloping U-shape notch by bond graph

Autor: Zhao-qiang Wang, Wan-rong Wu, Lei Lou, Xiang-jing Liang
Rok vydání: 2015
Předmět:
Zdroj: Journal of Central South University. 22:4205-4212
ISSN: 2227-5223
2095-2899
DOI: 10.1007/s11771-015-2968-x
Popis: To increase the efficiency and reliability of the thermodynamics analysis of the spool valve, the precise function expression of the flow area for the sloping U-shape notch orifice versus the spool stroke and thermal-hydraulic bond graph based on the conservation of mass and energy were introduced. Subsequently, the connection rule for the bond graph elements and the method to construct the complete thermal-hydraulic system model were proposed. On the basis of heat transfer analysis of a typical hydraulic circuit containing the spool valve, the lumped parameter for mathematical model of the system was given. At last, the reliability of the mathematical model of the flow area and the thermal-hydraulic system for the sloping U-shape notch orifice on the spool were demonstrated by the test. The good agreement between the simulation results and experimental data demonstrates the validity of the modeling method.
Databáze: OpenAIRE
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