Computational analysis of multi-contact phase change device for toggle logic operations

Purpose The purpose of this paper is to make a three-dimensional computational analysis of melting in corrugated pipe inserted system filled with phase change material (PCM). The system was heated from the inner pipe, and temperature of the outer pipe was lower than that of inner pipe. Different geometrical ratio cases and two different temperature differences were tested for their effect on melting time. Design/methodology/approach A computational analysis through a pipe with corrugated pipe filled with PCM is analyzed. Finite volume method was applied with the SIMPLE algorithm method to solve the governing equations. Findings The results indicate that the geometrical parameters can be used to control the melting time inside the heat exchanger which, in turn, affect the energy efficiency. The fastest melting time is seen in Case 4 at the same temperature difference which is the major observation of the current work. Originality/value Originality of this work is to perform a three-dimensional analysis of melting of PCM in a corrugated pipe inserted pipe.

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Multi-contact Phase Change Toggle Logic Device Utilizing Thermal Crosstalk

2019 Device Research Conference (DRC) ◽

10.1109/drc46940.2019.9046409 ◽

2019 ◽

Author(s):

Raihan Sayeed Khan ◽

Nadim H. Kan'an ◽

Jake Scoggin ◽

Helena Silva ◽

Ali Gokirmak

Keyword(s):

Phase Change ◽

Logic Device ◽

Contact Phase

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Analytical Models for the Systematic Errors of Differential Scanning Calorimetry Instruments

Volume 1 ◽

10.1115/ht-fed2004-56745 ◽

2004 ◽

Cited By ~ 1

Author(s):

Adrian S. Sabau ◽

Wallace D. Porter

Keyword(s):

Differential Scanning Calorimetry ◽

Phase Change ◽

Computational Analysis ◽

Systematic Errors ◽

Analytical Models ◽

Transition Temperatures ◽

Scanning Calorimetry ◽

Heating And Cooling ◽

Dsc Measurements ◽

Phase Transition Temperatures

Differential Scanning Calorimetry (DSC) measurements are routinely used to determine enthalpies of phase change, phase transition temperatures, glass transition temperatures, and heat capacities. In order to obtain data on the amount of phases during phase change, time-temperature lags, which are inherent to the measurement process, must be estimated through a computational analysis. An analytical model is proposed for the systematic error of the instrument. Numerical simulation results are compared against experimental data obtained at different heating and cooling rates.

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Contact size scaling of a W-contact phase-change memory cell based on numerical simulation

Journal of Semiconductors ◽

10.1088/1674-4926/33/10/104006 ◽

2012 ◽

Vol 33 (10) ◽

pp. 104006

Author(s):

Yiqun Wei ◽

Xinnan Lin ◽

Yuchao Jia ◽

Xiaole Cui ◽

Xing Zhang ◽

...

Keyword(s):

Numerical Simulation ◽

Phase Change ◽

Phase Change Memory ◽

Memory Cell ◽

Contact Phase ◽

Size Scaling ◽

Contact Size ◽

Change Memory

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A three-dimensional computational analysis of ellipsoidal radiator with phase change

International Journal of Numerical Methods for Heat &amp Fluid Flow ◽

10.1108/hff-07-2020-0429 ◽

2020 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Nidal H. Abu-Hamdeh ◽

Ömer Akbal ◽

Hakan F. Öztop ◽

Abdullah M. Abusorrah ◽

Mohannad M. Bayoumi

Keyword(s):

Phase Change ◽

Temperature Difference ◽

Computational Analysis ◽

Three Dimensional ◽

Time Step ◽

Content Type ◽

Melting Fraction ◽

Higher Temperature ◽

Volume Method ◽

Change Material

Purpose The purpose of this paper is to solve the problem of a three-dimensional computational analysis for an elliptic-shaped cavity in a pipe under constant temperature. Design/methodology/approach The three-dimensional computational solution of governing equations was performed by using finite volume method with different temperature difference. Findings The parafin wax was chosen as a phase change material (PCM), and melting fraction, streamlines and isotherms are formed for different time step. It is found that position B give better results than that of position A, and temperature difference effects the duration of melting of PCM. Originality/value The three-dimensional analysis of melting in an ellipsoidal pipe with inner pipe with higher temperature is the main originality of this work.

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