Numerical Investigation on Crack Detection Technique for Electric Connector with Joule Heating Effect

PurposeJoule heating effect is a pervasive phenomenon in electro-osmotic flow because of the applied electric field and fluid electrical resistivity across the microchannels. Its effect in electro-osmotic flow field is an important mechanism to control the flow inside the microchannels and it includes numerous applications.Design/methodology/approachThis research article details the numerical investigation on alterations in the profile of stream wise velocity of simple Couette-electroosmotic flow and pressure driven electro-osmotic Couette flow by the dynamic viscosity variations happened due to the Joule heating effect throughout the dielectric fluid usually observed in various microfluidic devices.FindingsThe advantages of the Joule heating effect are not only to control the velocity in microchannels but also to act as an active method to enhance the mixing efficiency. The results of numerical investigations reveal that the thermal field due to Joule heating effect causes considerable variation of dynamic viscosity across the microchannel to initiate a shear flow when EDL (Electrical Double Layer) thickness is increased and is being varied across the channel.Originality/valueThis research work suggest how joule heating can be used as en effective mechanism for flow control in microfluidic devices.

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Computational Analysis of Joule Heating Effect in Triple Material Gate AlGaN/GaN High Electron Mobility Transistor

ECS Transactions ◽

10.1149/10203.0043ecst ◽

2021 ◽

Vol 102 (3) ◽

pp. 43-52

Author(s):

Md Tashfiq Bin Kashem ◽

Samia Subrina

Keyword(s):

Joule Heating ◽

Electron Mobility ◽

Computational Analysis ◽

High Electron Mobility Transistor ◽

High Electron ◽

Heating Effect ◽

High Electron Mobility ◽

Joule Heating Effect

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Joule Heating Effect

10.1007/springerreference_66993 ◽

2011 ◽

Keyword(s):

Joule Heating ◽

Heating Effect ◽

Joule Heating Effect

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JOULE HEATING EFFECT REDUCTION OF AN ELECTROMAGNET SYSTEM UTILIZING ON-CHIP MAGNETIC CORE

Jurnal Teknologi ◽

10.11113/jt.v78.9591 ◽

2016 ◽

Vol 78 (8-4) ◽

Cited By ~ 1

Author(s):

Ummikalsom Abidin ◽

Jumril Yunas ◽

Burhanuddin Yeop Majlis

Keyword(s):

Joule Heating ◽

Temperature Rise ◽

Magnetic Core ◽

Operating Conditions ◽

Optimum Operating ◽

Pdms Layer ◽

Heating Effect ◽

Joule Heating Effect ◽

Magnet Wire ◽

On Chip

Joule heating effect is substantial in an electromagnet system due to high density current from current-carrying conductor for high magnetic field generation. In Lab-on-chip (LoC) Magnetically Activated Cell Sorting (MACS) device, Joule heating effect generating high temperature and affecting the biological cells viability is investigated. The temperature rise of the integrated system was measured using resistance temperature detector, RTD Pt100. Three temperature rise conditions which are from the bare spiral-shaped magnet wire, the combination of magnet wire and on-chip magnetic core and combination of magnet wire, on-chip magnetic core and 150 mm polydimethylsiloxane (PDMS) layer have been investigated. The combination of electromagnet of spiral-shaped magnet wire coil and on-chip magnetic core has reduced the temperature significantly which are, ~ 38 % and ~ 26 % with magnet wire winding, N = 10 (IDC = 3.0 A, t = 210 s) and N = 20 (IDC = 2.5 A, t = 210 s) respectively. The reduced Joule heating effect is expected due to silicon chip of high thermal conductivity material enable fast heat dissipation to the surrounding. Therefore, the integration of electromagnet system and on-chip magnetic core has the potential to be used as part of LoC MACS system provided the optimum operating conditions are determined

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