Numerical analysis of temperature field improvement with nanoparticles designed to achieve critical power dissipation in magnetic hyperthermia

2017 ◽  
Vol 122 (3) ◽  
pp. 034702 ◽  
Author(s):  
Yundong Tang ◽  
Rodolfo C. C. Flesch ◽  
Tao Jin
Keyword(s):  
Temperature Field ◽  
Numerical Analysis ◽  
Power Dissipation ◽  
Critical Power ◽  
Magnetic Hyperthermia

scholarly journals Localized Dielectric Loss Heating in Dielectrophoresis Devices

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Tae Joon Kwak ◽  
Imtiaz Hossen ◽  
Rashid Bashir ◽  
Woo-Jin Chang ◽  
Chung Hoon Lee
Keyword(s):  
Numerical Analysis ◽  
Dielectric Loss ◽  
Power Dissipation ◽  
Temperature Sensor ◽  
Thermal Mass ◽  
Experiment Data ◽  
Debye Relaxation ◽  
Heating Mechanism ◽  
Biological Entities ◽  
Good Agreement

AbstractTemperature increases during dielectrophoresis (DEP) can affect the response of biological entities, and ignoring the effect can result in misleading analysis. The heating mechanism of a DEP device is typically considered to be the result of Joule heating and is overlooked without an appropriate analysis. Our experiment and analysis indicate that the heating mechanism is due to the dielectric loss (Debye relaxation). A temperature increase between interdigitated electrodes (IDEs) has been measured with an integrated micro temperature sensor between IDEs to be as high as 70 °C at 1.5 MHz with a 30 Vpp applied voltage to our ultra-low thermal mass DEP device. Analytical and numerical analysis of the power dissipation due to the dielectric loss are in good agreement with the experiment data.

Numerical Analysis of Lining Temperature Field of Hydraulic Tunnel under the Highway

2010 ◽  
Vol 163-167 ◽  
pp. 1505-1509
Author(s):  
Xiao Yun Jia ◽  
Bao Long Lin
Keyword(s):  
Temperature Field ◽  
Numerical Analysis ◽  
Structural Characteristics ◽  
Crack Control ◽  
Temperature Changes ◽  
Finite Element Software ◽  
Concrete Crack ◽  
Geological Conditions ◽  
North Water ◽  
The Difference

Based on the geological conditions of culvert of the South to North Water Transfer Project, lining temperature field of hydraulic tunnel for crack control is simulated by finite element software—ANSYS. According to numerical analysis results of lining temperature field, considering terrain condition, structural characteristics and climate, some engineering measures are taken during construction. Internal temperature of concrete is controlled effectively, concrete crack caused by temperature changes is solved successfully, and construction quality is assured. The difference of measuring data in-situ and calculating data is very small, which illustrate that calculated model is correct and parameters are reasonable. The results can act as reference for the design and construction of similar projects later.

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