Results 71 to 80 of about 13,582 (315)

Thickness‐Dependent Infrared Emissivity of Ultrathin Freestanding MoSiN Nanocomposite Membranes

open access: yesAdvanced Optical Materials, EarlyView.
ABSTRACT Metals and dielectrics show opposite trends in thickness‐dependent infrared emissivity: metallic films exhibit a rise in emissivity below a critical thickness, while dielectric films show a corresponding decline. For applications demanding both high emissivity and mechanical strength in membranes with nanoscale thickness, combining these ...
Reethu Sebastian   +3 more
wiley   +1 more source

A general method for calculation of flow boiling and flow condensation heat transfer coefficients in minichannels

open access: yes, 2009
This paper was presented at the 2nd Micro and Nano Flows Conference (MNF2009), which was held at Brunel University, West London, UK. The conference was organised by Brunel University and supported by the Institution of Mechanical Engineers, IPEM, the ...
2nd Micro and Nano Flows Conference (MNF2009)   +3 more
core  

Local Heat Transfer Distribution and Effect of Instabilities During Flow Boiling in a Silicon Microchannel Heat Sink

open access: yes, 2011
Flow boiling of the perfluorinated dielectric fluid FC-77 in a silicon microchannel heat sink is investigated. The heat sink contains 60 parallel microchannels each of 100 lm width and 389 lm depth.
Garimella, Suresh V.   +4 more
core   +1 more source

Inverse estimation of the local heat transfer coefficient in curved tubes: a numerical validation [PDF]

open access: yes, 2013
Wall curvature represents one of the most used passive techniques to enhance convective heat transfer. The effectiveness of wall curvature is due to the fact that it gives origin to the centrifugal force: this phenomenon induces local maxima in the ...
CATTANI, Luca   +4 more
core   +1 more source

Numerical Modeling of Photothermal Self‐Excited Composite Oscillators

open access: yesAdvanced Robotics Research, EarlyView.
We present a numerical framework for simulating photothermal self‐excited oscillations. The driving mechanism is elucidated by highlighting the roles of inertia and overshoot, as well as the phase lag between the thermal moment and the oscillation angle, which together construct the feedback loop between the system state and the environmental stimulus.
Zixiao Liu   +6 more
wiley   +1 more source

Heat transfer correlation for flow boiling in small to micro tubes [PDF]

open access: yes, 2013
This article is available open access under a Creative Commons license (http://creativecommons.org/licenses/by-nc-nd/3.0/) Copyright © 2013 The Authors. Published by Elsevier Ltd.
Mahmoud, Mohamed M.   +3 more
core   +1 more source

Investigation of Calculation Methods for Convective Heat Transfer Coefficient in Combustion Chambers and in Converging-Diverging Nozzles [PDF]

open access: yesفناوری در مهندسی هوافضا, 2019
This paper reports a review and comparison of the methods used for calculating convective heat transfer coefficient in combustion chambers and in diverging-converging nozzles.
Mohammad Razmjooei, Zaheer Sabohi
doaj  

Numerical simulation of heat transfer augmentation in fin-and-tube heat exchanger with various number of rows of concave rectangular winglet vortex generator

open access: yesMATEC Web of Conferences, 2018
The passive method by using a vortex generator (VG) is an effective method for the improvement of convective heat transfer. This study is focused on usage of concave rectangular winglet vortex generator (CRW VG) for improving convective heat transfer in ...
Syaiful   +3 more
doaj   +1 more source

Experimental Study on Forced Convective Heat Transfer with Low Volume Fraction of CuO/Water Nanofluid

open access: yesEnergies, 2009
The present work is an experimental study of steady state convective heat transfer of de-ionized water with a low volume fraction (0.003% by volume) of copper oxide (CuO) nanoparticles dispersed to form a nanofluid that flows through a copper tube.
Lazarus Godson Asirvatham   +3 more
doaj   +1 more source

Root‐Stimulated Movements in Mimosa Pudica for Biohybrid Robotic Systems

open access: yesAdvanced Robotics Research, EarlyView.
This study demonstrates that thermal and electrical stimulation of Mimosa pudica root induces movement of the petiole and pinnules without direct stimulation of the aerial organs, thereby enabling a plant‐based robotic gripper and providing a foundation for the development of intelligent and sustainable systems.
Misao Sato   +6 more
wiley   +1 more source

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