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中南大学学报(英文版)

Journal of Central South University

Vol. 22    No. 7    July 2015

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Thermal-hydraulic modeling and analysis of hydraulic system by pseudo-bond graph
HU Jun-ping(胡均平), LI Ke-jun(李科军)

College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China

Abstract:To increase the efficiency and reliability of the thermodynamics analysis of the hydraulic system, the method based on pseudo-bond graph is introduced. According to the working mechanism of hydraulic components, they can be separated into two categories: capacitive components and resistive components. Then, the thermal-hydraulic pseudo-bond graphs of capacitive C element and resistance R element were developed, based on the conservation of mass and energy. Subsequently, the connection rule for the pseudo-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 a piston pump, the lumped parameter mathematical model of the system was given. The good agreement between the simulation results and experimental data demonstrates the validity of the modeling method.

 

Key words: thermodynamics; hydraulic system; pseudo-bond graph; piston pump; modeling; temperature simulation

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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