Notional all-electric ship thermal simulation and visualization

Dias, Fernando; Souza, Jeferson Ávila; Ordóñez, Juan C.; Vargas, J.V.C.; Hovsapian, Rob; Amy, John

doi:10.1109/ests.2009.4906564

Cited by 7 publications

(7 citation statements)

References 6 publications

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“…Thermal response in systems engineering was investigated by means of simple physical models in previous studies of electronic packaging and all‐electric ships. In these models, the domain of interest (system under consideration) was initially discretized in three dimensions using a cell‐centered finite‐volume scheme, and principles of classical thermodynamics and heat transfer were applied to each cell, resulting in a system of ODEs with respect to time.…”

Section: Introductionmentioning

confidence: 99%

A volume element model (VEM) for energy systems engineering

Dilay

Vargas

Souza

et al. 2014

Int. J. Energy Res.

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SUMMARY This work presents a simplified modeling and simulation approach for energy systems engineering that is capable of providing quick and accurate responses during system design. For that, the laws of conservation are combined with available empirical and theoretical correlations to quantify the diverse types of flows that cross the system and produce a simplified tridimensional mathematical model, namely a volume element model (VEM). The physical domain of interest is discretized in space, thus producing a system of algebraic and ODEs with respect to time, whose solution delivers the project variables spatial distribution and dynamic response. In order to illustrate the application of the VEM in energy systems engineering, three example problems are considered: (i) a regenerative heat exchanger; (ii) a power electronic building block (PEBB); and (iii) a notional all‐electric ship. The same mathematical model was used to analyze problems (ii) and (iii), that is, the thermal management of heat‐generating equipment packaging. In the examples, the converged mesh had a total of 20, 2000, and 7725 volume elements. The third problem led to the largest simulation, which for steady‐state cases took between 5 and 10 min of computational time to reach convergence and for the ship dynamic response 50 min (i.e., 80,000 s of real time). The regenerative heat exchanger model demonstrated how VEM allowed for the coexistence of different phases (subsystems) within the same volume element. The thermal management model was adjusted and experimentally validated for the PEBB system, and it was possible to perform a parametric and dynamic analysis of the PEBB and of the notional all‐electric ship. Therefore, because of the observed combination of accuracy and low computational time, it is expected that the model could be used as an efficient tool for design, control, and optimization in energy systems engineering. Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

A volume element model (VEM) for energy systems engineering

Dilay

Vargas

Souza

et al. 2014

Int. J. Energy Res.

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“…For the Navy's future all-electric ships, thermal issues become more important due to the large amount of additional heat load generated [1][2][3]. The addition of advanced power electronics and weapons will result in heat loads eventually requiring a 700% increase over currently installed cooling capacity [4].…”

Section: Introductionmentioning

confidence: 99%

Thermal modeling and simulation of the chilled water system for future all electric ship

Fang

Jiang

Khan

et al. 2011

2011 IEEE Electric Ship Technologies Symposium

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A system-level model for a combatant ship's chilled water system is described and developed in this paper. Some major thermal components related to dynamic aspects are identified in detail. Given the vital heat load for each compartment and equipment, the steady state performances are evaluated for the normal two-loop alignment. Dynamic behaviors are also investigated at different operating conditions. Several extreme cases such as pipe rupture in the vital branch and time to overheat are also studied to evaluate the system survivability. The work presented in this paper continuous the efforts for using Virtual Test Bed as a potential system-level dynamic simulation platform for an all-electric ship thermal management.

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“…In the direction of computationally fast and efficient models, the thermal response of complex and integrated systems has been investigated through a simplified physical model in previous studies 4–6 for electronic packages and all-electric ships. Proceeding with the effort, towards the goal of total solutions to thermal and electrical management, a reliable and comprehensive computational visualization tool was also developed.…”

Section: Introductionmentioning

confidence: 99%

“…To upgrade the simplified mathematical model introduced previously for electronic packages and all-electric ships 4–6 by including fresh and sea water (or any other cooling fluid) cooled systems throughout the global system, and the assessment of both steady-state and transient behaviors.…”

Section: Introductionmentioning

confidence: 99%

Notional all-electric ship systems integration thermal simulation and visualization

et al. 2012

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This work presents a simplified mathematical model for fast visualization and thermal simulation of complex and integrated energy systems that is capable of providing quick responses during system design. The tool allows for the determination of the resulting whole system temperature and relative humidity distribution. For that, the simplified physical model combines principles of classical thermodynamics and heat transfer, resulting in a system of three-dimensional (3D) differential equations that are discretized in space using a 3D cell-centered finite volume scheme. As an example of a complex and integrated system analysis, 3D simulations are performed in order to determine the temperature and relative humidity distributions inside an all-electric ship for a baseline medium voltage direct current power system architecture, under different operating conditions. A relatively coarse mesh was used (9410 volume elements) to obtain converged results for a large computational domain (185m×24m×34m) containing diverse equipment. The largest computational time required for obtaining results was 560 s, that is, less than 10 min. Therefore, after experimental validation for a particular system, it is reasonable to state that the model could be used as an efficient tool for complex and integrated systems thermal design, control and optimization.

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Notional all-electric ship thermal simulation and visualization

Cited by 7 publications

References 6 publications

A volume element model (VEM) for energy systems engineering

A volume element model (VEM) for energy systems engineering

Thermal modeling and simulation of the chilled water system for future all electric ship

Notional all-electric ship systems integration thermal simulation and visualization

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