Results 21 to 30 of about 1,044 (209)
Entropy, 2016 Nanofluid has great potentials in heat transfer enhancement and entropy generation decrease as an effective cooling medium. Effects of Al2O3-water nanofluid flow on entropy generation and heat transfer performance in a rectangular conventional channel ...
Yonghui Xie +3 more
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Frontiers in Energy Research, 2023 Centrifugal pumps are frequently utilized in general machinery, but they have issues with low efficiency, unstable operation, and high-power consumption in actual engineering, making performance improvements necessary.
Handong Qi +9 more
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Self-Organization, Entropy Generation Rate, and Boundary Defects: A Control Volume Approach [PDF]
Entropy, 2021 Self-organization that leads to the discontinuous emergence of optimized new patterns is related to entropy generation and the export of entropy. Compared to the original pattern that the new, self-organized pattern replaces, the new features could involve an abrupt change in the pattern-volume. There is no clear principle of pathway selection for self-
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Entropy generation analysis in an evaporative air-cooled heat exchanger
Journal of Thermal Science and Technology, 2014 In the present study, air-side entropy generation rate for an evaporative air-cooled heat exchanger has been investigated using thermodynamic second-law analysis.
Shoeib MAHJOUB +3 more
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Constructal Optimizations of Line-to-Line Vascular Channels with Turbulent Convection Heat Transfer
Entropy, 2022 The multi-scale line-to-line vascular channels (LVCs) widely exist in nature because of their excellent transmission characteristics. In this paper, models of LVCs with turbulent convection heat transfer are established.
Daoguang Lin +4 more
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Engineering Science and Technology, an International Journal, 2021 The present study focuses on the energy performance, entropy generation, and irreversibility of the use of nanofluid in an industrial Peugeot automobile radiator (size: 250 × 301 × 60.4 mm, channel number: 34 and hydraulic diameter: 1.923 mm) with a ...
Beytullah Erdoğan +4 more
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Analysis of Energy Utilization and Losses for Jet-Propelled Vehicles
Aerospace, 2021 The global control volume-based energy utilization balance for an aerospace vehicle is extended to allow for the analysis of jet-propelled vehicles.
Mohammad Abbas, David W. Riggins
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Entropy Generation Rate Minimization for Methanol Synthesis via a CO2 Hydrogenation Reactor [PDF]
Entropy, 2019 The methanol synthesis via CO2 hydrogenation (MSCH) reaction is a useful CO2 utilization strategy, and this synthesis path has also been widely applied commercially for many years. In this work the performance of a MSCH reactor with the minimum entropy generation rate (EGR) as the objective function is optimized by using finite time thermodynamic and ...
Penglei Li +3 more
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Case Studies in Thermal Engineering, 2021 Background and objective: Here irreversibility analysis in unsteady Darcy-Forchheimer flow of viscous fluid by a stretched sheet is examined. Lorentz force effect is considered.
Sohail A. Khan, T. Hayat, A. Alsaedi
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Predicting Entropy Generation Rates in Transitional Boundary Layers Based on Intermittency
Journal of Turbomachinery, 2006 Prediction of thermodynamic loss in transitional boundary layers is typically based on time-averaged data only. This approach effectively ignores the intermittent nature of the transition region. In this work laminar and turbulent conditionally sampled boundary layer data for zero pressure gradient and accelerating transitional boundary layers have ...
Nolan, K +3 more
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