Cooling of a sphere by natural convection – The applicability of the lumped capacitance method

Virag, Zdravko; Živić, Marija; Krizmanić, Severino

doi:10.1016/j.ijheatmasstransfer.2011.02.034

Cited by 14 publications

(3 citation statements)

References 5 publications

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“…Therefore, for 1D heat flow, the nodes located in the middle of the cuboid blocks represent a particular material layer wherein resistance is combined as lumped elements. 73 T 1 , which is user-specified, represents the temperature at a node located on the inner surface of the device shell. By contrast, the three other temperatures are calculated during the solution process and they represent the average temperature in each layer of the skin.…”

Section: Methodsmentioning

confidence: 99%

“…Four nodes are associated with varying temperatures along the circuit, namely, T 1 , T 2 , T 3 , and T 4 . Therefore, for 1D heat flow, the nodes located in the middle of the cuboid blocks represent a particular material layer wherein resistance is combined as lumped elements 73 . T 1 , which is user‐specified, represents the temperature at a node located on the inner surface of the device shell.…”

Section: Thermal Principle and Measurement Methodsmentioning

confidence: 99%

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Thermal management of wearable and implantable electronic healthcare devices: Perspective and measurement approach

2020

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Summary The performance of electronic devices, mostly in medical applications, has been investigated to determine whether they meet the requirements of healthcare monitoring and patient's satisfaction. Mobile health monitoring is preferable at present given the current innovations in handheld, wearable, and implantable devices. However, these applications require appropriate thermal management because they are attached directly to the human body and operate for a long period. Moreover, a sophisticated design with functional mobility necessitates proper thermal circulation during the process. This review provides the current research direction for cooling systems, the thermal working principle of wearable and implantable devices, and its implementation on design architecture. Then, the importance of internal and external functional properties in thermal management and their effects on device performance are discussed. Operating temperature is among the most important elements in monitoring thermal performance due to the tendency of tissue and component damages to occur after an increment of only 1°C or 2°C in temperature. Challenges and available solutions for thermal management are listed in detail to improve cooling methods and service to the healthcare field.

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Section: Methodsmentioning

confidence: 99%

Section: Thermal Principle and Measurement Methodsmentioning

confidence: 99%

Thermal management of wearable and implantable electronic healthcare devices: Perspective and measurement approach

2020

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“…Natural convection, which occurs when fluid or air movement is driven solely by buoyancy forces arising from temperature variations without external mechanical assistance, typically has values ranging from 5 to 15 W/m 2 C [64]. The measurement of free convection can be readily accomplished using either the lumped capacitance method or analytical techniques [65]. Forced convection happens when air/fluid moves due to external force.…”

Section: Thermal Modelmentioning

confidence: 99%

Experimental, Computational, and Machine Learning Methods for Prediction of Residual Stresses in Laser Additive Manufacturing: A Critical Review

Wu,

Tariq,

Joy

et al. 2024

Materials

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In recent decades, laser additive manufacturing has seen rapid development and has been applied to various fields, including the aerospace, automotive, and biomedical industries. However, the residual stresses that form during the manufacturing process can lead to defects in the printed parts, such as distortion and cracking. Therefore, accurately predicting residual stresses is crucial for preventing part failure and ensuring product quality. This critical review covers the fundamental aspects and formation mechanisms of residual stresses. It also extensively discusses the prediction of residual stresses utilizing experimental, computational, and machine learning methods. Finally, the review addresses the challenges and future directions in predicting residual stresses in laser additive manufacturing.

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A computationally efficient method for tempered fractional differential equations with application

2017

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Cooling of a sphere by natural convection – The applicability of the lumped capacitance method

Cited by 14 publications

References 5 publications

Thermal management of wearable and implantable electronic healthcare devices: Perspective and measurement approach

Thermal management of wearable and implantable electronic healthcare devices: Perspective and measurement approach

Experimental, Computational, and Machine Learning Methods for Prediction of Residual Stresses in Laser Additive Manufacturing: A Critical Review

A computationally efficient method for tempered fractional differential equations with application

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