Results 31 to 40 of about 1,658,194 (247)

Fractal Geometry as an Effective Heat Sink

open access: yesStrojniški vestnik - Journal of Mechanical Engineering, 2022
"How long is the coast of Britain?" was the question stated by Mandelbrot. Using smaller and smaller rulers the coast length limits to infinity. If this logic is applied to the fractal heat sink geometry, infinite cooling capacity should be obtained using fractals with mathematically infinite surface area.
openaire   +4 more sources

Using of phase change materials to enhance the thermal performance of micro channel heat sink

open access: yesEngineering Science and Technology, an International Journal, 2018
In this paper using of the phase change materials (PCMs) in a micro-channel heat sink (MCHS) is numerically investigated. The air is first used in heat sink and then four phase change materials (paraffin wax, n-eicosane, p116 and RT41) have been used as ...
Mushtaq I. Hasan, Hind Lafta Tbena
doaj   +1 more source

Analysis of heat transfer and fluid flow in a microchannel heat sink with sidewall dimples and fillet profile [PDF]

open access: yes, 2022
The performance of microchannel with sidewall dimples and fillet profile in the bottom surface is investigated. Two dimple sizes of (0.5 mm and 1 mm) are systematically clustered along the channels with and without fillet are considered. The laminar flow
Hayder M. Hasan   +11 more
core   +1 more source

The Effects of Deep Cryogenic Treatment on Heat transfer of Aluminium Heat Sink

open access: yesMedžiagotyra
Thermal management is critical for achieving peak performance and extending the life of electronic equipment. Heat sinks are the most effective thermal control tools. Copper and aluminium are the most used materials for heat sinks.
Rajesh Kumar MANICKAM   +1 more
doaj   +1 more source

Influence of an Electrically Non-Conducting Heat Sink for Power Semiconductors on Radiated Interferences [PDF]

open access: yesAdvances in Radio Science, 2018
Power semiconductors are used in a growing number of applications. Furthermore, faster switching transients and therefore higher switching frequencies can be realised. This leads to higher radiated interferences at higher frequencies.
S. Chromy   +4 more
doaj   +1 more source

The heat transfer characteristics of liquid cooling heat sink with micro pin fins [PDF]

open access: yes, 2017
This paper numerically and experimentally investigated the liquid cooling efficiency of heat sinks containing micro pin fins. Aluminum prototypes of heat sink with micro pin fin were fabricated to explore the flow and thermal performance.
Chiu, Han-Chieh   +9 more
core   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar   +2 more
wiley   +1 more source

Effect of Surface Microstructure on the Heat Dissipation Performance of Heat Sinks Used in Electronic Devices

open access: yesMicromachines, 2021
Heat sinks are widely used in electronic devices with high heat flux. The design and build of microstructures on heat sinks has shown effectiveness in improving heat dissipation efficiency. In this paper, four kinds of treatment methods were used to make
Yuxin You   +6 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

open access: yesAdvanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares   +3 more
wiley   +1 more source

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