Distributed parameter modeling of fluid transmission lines

2021 ◽  
Vol 106 ◽  
pp. 155-172
Author(s):  
Ahmed Elkhashap ◽  
Daniel Rüschen ◽  
Dirk Abel
Keyword(s):  
Transmission Lines ◽  
Distributed Parameter ◽  
Distributed Parameter Modeling

Distributed parameter modeling for the steam generator in the nuclear power plant

2021 ◽  
Vol 152 ◽  
pp. 107945
Author(s):  
Jiuwu Hui ◽  
Jun Ling ◽  
He Dong ◽  
Gaixia Wang ◽  
Jingqi Yuan
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Steam Generator ◽  
Nuclear Power ◽  
Distributed Parameter ◽  
Distributed Parameter Modeling

The Development of a Predictive Model for the Optimization of High-Speed Cam-Follower Systems with Coulomb Damping Internal Friction and Elastic and Fluidic Elements

1986 ◽  
Vol 108 (4) ◽  
pp. 506-515 ◽  
Author(s):  
Shervin Hanachi ◽  
Ferdinand Freudenstein
Keyword(s):  
Energy Dissipation ◽  
Dynamic Model ◽  
High Speed ◽  
Distributed Parameter ◽  
Predictive Capability ◽  
Valve Spring ◽  
Coulomb Damping ◽  
System Components ◽  
Cam Follower ◽  
Distributed Parameter Modeling

A highly accurate and predictive dynamic model of a high-speed cam-follower system has been developed and verified. In view of the predominance of Coulomb damping in high-speed cam-follower systems, this form of damping has been used as the chief mode of energy dissipation. This has resulted in a significant improvement in the predictive capability of the dynamic model. The accuracy of the model can also be attributed to careful modeling of system components such as the distributed-parameter modeling of the valve spring, the modeling of the hydraulic lifter, and modeling of the damping due to a nested-valve spring. The latter two represent the first such modeling in the area of cam-follower systems.

scholarly journals Parametric Fault Diagnosis of Very High-Frequency Circuits Containing Distributed Parameter Transmission Lines

Electronics ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 550
Author(s):  
Michał Tadeusiewicz ◽  
Stanisław Hałgas
Keyword(s):  
Fault Diagnosis ◽  
Transmission Lines ◽  
High Frequency ◽  
Diagnostic Method ◽  
Distributed Parameter ◽  
Very High Frequency ◽  
Parametric Fault ◽  
The One ◽  
Very High ◽  
Parameter Transmission

Parametric fault diagnosis of analog very high-frequency circuits consisting of a distributed parameter transmission line (DPTL) terminated at both ends by lumped one-ports is considered in this paper. The one-ports may include linear passive and active components. The DPTL is a uniform two-conductor line immersed in a homogenous medium, specified by the per-unit-length (p-u-l) parameters. The proposed method encompasses all aspects of parametric fault diagnosis: detection of the faulty area, location of the fault inside this area, and estimation of its value. It is assumed that only one fault can occur in the circuit. The diagnostic method is based on a measurement test arranged in the AC state. Different approaches are proposed depending on whether the faulty is DPTL or one of the one-ports. An iterative method is modified to solve various systems of nonlinear equations that arise in the course of the diagnostic process. The diagnostic method can be extended to a broader class of circuits containing several transmission lines. Three numerical examples reveal that the proposed diagnostic method is fast and gives quite accurate findings.

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