Analysis of heat sink effect in hepatic cancer treatment near arterial for microwave ablation by using finite element method

2012 ◽  
Author(s):  
P. Yhamyindee ◽  
P. Phasukkit ◽  
S. Tungjitkusolmon ◽  
A. Sanpanich
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Cancer Treatment ◽  
Heat Sink ◽  
Microwave Ablation ◽  
Hepatic Cancer ◽  
Sink Effect ◽  
Element Method

scholarly journals Analytical Thermal Modeling of Metal Additive Manufacturing by Heat Sink Solution

Materials ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 2568 ◽  
Author(s):  
Jinqiang Ning ◽  
Daniel E. Sievers ◽  
Hamid Garmestani ◽  
Steven Y. Liang
Keyword(s):  
Heat Transfer ◽  
Finite Element Method ◽  
Boundary Condition ◽  
Finite Element ◽  
Additive Manufacturing ◽  
Computational Efficiency ◽  
Heat Sink ◽  
Thermal Gradients ◽  
Metal Additive ◽  
Element Method

Metal additive manufacturing can produce geometrically complex parts with effective cost. The high thermal gradients due to the repeatedly rapid heat and solidification cause defects in the produced parts, such as cracks, porosity, undesired residual stress, and part distortion. Different techniques were employed for temperature investigation. Experimental measurement and finite element method-based numerical models are limited by the restricted accessibility and expensive computational cost, respectively. The available physics-based analytical model has promising short computational efficiency without resorting to finite element method or any iteration-based simulations. However, the heat transfer boundary condition cannot be considered without the involvement of finite element method or iteration-based simulations, which significantly reduces the computational efficiency, and thus the usefulness of the developed model. This work presents an explicit and closed-form solution, namely heat sink solution, to consider the heat transfer boundary condition. The heat sink solution was developed from the moving point heat source solution based on heat transfer of convection and radiation. The part boundary is mathematically discretized into many heats sinks due to the non-uniform temperature distribution, which causes non-uniform heat loss. The temperature profiles, thermal gradients, and temperature-affected material properties are calculated and presented. Good agreements were observed upon validation against experimental molten pool measurements.

Effects of Tool Rake Angle on the Curved Radius during Planing-Forming Process of Fine Heat Sink

2011 ◽  
Vol 317-319 ◽  
pp. 370-373 ◽  
Author(s):  
Liang Wei ◽  
Zhao Qin Yu ◽  
Le Le Zhang ◽  
Yong Jun Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Residual Strain ◽  
Heat Sink ◽  
Rake Angle ◽  
Heat Sinks ◽  
Forming Process ◽  
New Process ◽  
Experiment Verification ◽  
Element Method

Planing-forming is a new process to machine fin heat sinks. This paper investigates the effects of the tool rake angle on the curved radius during planing-forming process by 2-D coupled thermo-mechanical finite element method and experiment verification. With the increasing of the tool rake angle from 0° to 30°, the curved radius increased. When the tool rake increased form 30°to 60°, the curved radius turned stable. After the chip displaced from the tool rake, the fin’s curling up due to the distribution gradient of the residual strain.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

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