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A Field Application of Lumped Parameter Models
19th International Petroleum and Natural Gas Congress and Exhibition of Turkey, 2013This paper deals with the application of lumped parameter models (1-tank, 2-tank open/closed, 3-tank open/closed) to the long-term observed pressure behavior of Hofsstadir geothermal field which is a typical low-temperature liquid dominated geothermal system, in West Iceland.
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Lumped-parameter modeling of vented-box loudspeakers
Proceedings of the 2000 American Control Conference. ACC (IEEE Cat. No.00CH36334), 2000A lumped parameter model for a vented-box loudspeaker was developed from physical principles. This model was oriented for parametric identification techniques currently available in the literature. The trend of the model data compared well with that of real data from an example loudspeaker in the low frequency region (10 Hz to 100 Hz).
K.M. Al-Ai, A.K. Packard, B.H. Tonguel
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Nonlinear model with lumped parameters for asymmetric CMUTs
2015 IEEE International Ultrasonics Symposium (IUS), 2015An equivalent circuit model is developed for a special kind of CMUTs called asymmetric CMUTs, containing a membrane and two split bottom electrodes. The macromodel contains subcircuits representing different vibration modes from modal participation theory.
Edmond Cretu +2 more
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Lumped-Parameter Modeling of Frontal Offset Impacts
SAE Technical Paper Series, 1995This paper presents a lumped-parameter approach to modeling frontal offset impacts. Applications for offset models are discussed, including providing inputs to occupant simulations. The role of discretization errors, nonuniaxial motions, and test data dependence and sensitivity in limiting model accuracy are discussed.
Randa Radwan Samaha +2 more
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Elements of Lumped-Parameter Modeling in MEMS
2011In this chapter, we discuss the various elements of lumped-parameter modeling in MEMS devices. These include the stiffness of microstructures, the inertia elements, and the damping mechanisms of energy dissipation in microstructures. The forces affecting microstructures due to actuation and detection are another element, which is the subject of Chap. 3.
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Computer Modeling of Tumor Hyperthermia (A Dynamic Lumped Parameter Model)
1982The thermal behavior of normal and neoplastic tissue is modeled by a set of coupled ordinary differential equations. The equations lump the tissue and tumor into individual compartments, so that the equations are time dependent. These equations represent an initial step in the development of a comprehensive model which may be used in studying the ...
Nathan Adams Busch +2 more
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MEMS Modelling: Distributed versus Lumped Parameter Models
2019The miniaturisation of electromechanical systems is impacting our society as deeply as did the mass production of electronic systems in the last few decades. However, only in more recent times the design of MEMS has been approached in a systematic way, by employing methods and algorithms of automated optimal design (AOD).
Paolo Di Barba, Slawomir Wiak
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Modeling and Simulation Examples for Lumped Parameters Processes
2013For the block diagram in Figure 7.1, the equations: 7.1–7.3 define, by input–output equations, the controlled process (with the time constants T1 and T2), the controller (with PID effect and the time constant TR) and the reaction transducer (KT considered to be without inertia).
M. Abrudean +3 more
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Lumped Parameter Whole Body Circulation Modelling
2017In this chapter we introduce methodologies for modeling whole-body cardiovascular dynamics. Lumped parameter modeling techniques are employed to model both open-loop and closed-loop dynamics. The main constituents of the model are the pulmonary arterial and venous circulation, the systemic arterial and venous circulation, and the four chambers of the ...
Tommaso Mansi +3 more
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The incorporation of damping in lumped-parameter modelling techniques
Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics, 1999In structural dynamics modelling by means of multidegrees-of-freedom systems within the scope of lumped-parameter techniques, masses and stiffnesses are easily quantifiable, while methods of incorporating damping have traditionally been based on tentative approaches. Here a rigorous technique is proposed where the energy loss per cycle is simulated by
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