A liquid plug moving in an annular pipe – Heat transfer analysis

Cao, Yadi; Gao, Xuan; Li, Ri

doi:10.1016/j.ijheatmasstransfer.2019.05.088

Cited by 3 publications

(1 citation statement)

References 32 publications

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“…Finally, in view of applications with non-turbulent flow regimes the a priori spatially one-dimensional modeling approaches are likely to be not sufficiently accurate. This motivates further investigations on the basis of higher dimensional stationary-flow regimes as studied numerically for example in [25].…”

Section: Further Workmentioning

confidence: 89%

On delay partial differential and delay differential thermal models for variable pipe flow

Wurm

Bachler

Woittennek

2020

International Journal of Heat and Mass Transfer

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A new formulation of physical thermal models for variable plug flow through a pipe is proposed. The derived model is based on a commonly used onedimensional distributed parameter model, which explicitly takes into account the heat capacity of the jacket of the pipe. The main result of the present contribution is the constitution of the equivalence of this model with a serial connection of a pure delay or transport system and another partial-differential equation (PDE), subsequently called delay-partial-differential equation (DPDE)-model. The means for obtaining the proposed model comprise operational calculus in the Laplace domain as well as classical theory of characteristics. The finitedimensional approximation of the DPDE-model leads to a delay-differential equation (DDE)-system, which can be seen as a generalization of commonly used DDE-models consisting of a first-order low-pass filter subject to an input delay. The proposed model is compared to several alternative models in simulations and experimental studies.

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Section: Further Workmentioning

confidence: 89%

On delay partial differential and delay differential thermal models for variable pipe flow

Wurm

Bachler

Woittennek

2020

International Journal of Heat and Mass Transfer

View full text Add to dashboard Cite

show abstract

Numerical simulation of heat pipes in different applications

Maghrabie

Olabi²,

Alami³

et al. 2022

International Journal of Thermofluids

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Implementation of Artificial Intelligence in Modeling and Control of Heat Pipes: A Review

et al. 2023

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Heat pipe systems have attracted increasing attention recently for application in various heat transfer-involving systems and processes. One of the obstacles in implementing heat pipes in many applications is their difficult-to-model operation due to the many parameters that affect their performance. A promising alternative to classical modeling that emerges to perform accurate modeling of heat pipe systems is artificial intelligence (AI)-based modeling. This research reviews the applications of AI techniques for the modeling and control of heat pipe systems. This work discusses the AI-based modeling of heat pipes focusing on the influence of chosen input parameters and the utilized prediction models in heat pipe applications. The article also highlights various important aspects related to the application of AI models for modeling heat pipe systems, such as the optimal AI model structure, the models overfitting under small datasets conditions, and the use of dimensionless numbers as inputs to the AI models. Also, the application of hybrid AI algorithms (such as metaheuristic optimization algorithms with artificial neural networks) was reviewed and discussed. Next, intelligent control methods for heat pipe systems are investigated and discussed. Finally, future research directions are included for further improving this technology. It was concluded that AI algorithms and models could predict the performance of heat pipe systems accurately and improve their performance substantially.

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A liquid plug moving in an annular pipe – Heat transfer analysis

Cited by 3 publications

References 32 publications

On delay partial differential and delay differential thermal models for variable pipe flow

On delay partial differential and delay differential thermal models for variable pipe flow

Numerical simulation of heat pipes in different applications

Implementation of Artificial Intelligence in Modeling and Control of Heat Pipes: A Review

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