Electromagnetic-Thermal Responses of Tissues During Microwave Hyperthermia

2005 ◽  
Author(s):  
H. K. Lee ◽  
B. Q. Li ◽  
Y. Huo
Keyword(s):  
Numerical Model ◽  
Model Development ◽  
Fdtd Method ◽  
Source Distribution ◽  
Blood Flows ◽  
Fem Method ◽  
Thermal Calculations ◽  
Diffusion Phenomena ◽  
Electromagnetic Calculations ◽  
Microwave Hyperthermia

A numerical model is developed to study the electromagnetic and thermal responses of normal and cancerous tissues under microwave hyperthermia. The numerical model is 3-D dimensional with full integration of electromagnetic and thermal phenomena. The model development employs a finite difference time domain (FDTD) method for electromagnetic calculations and an implicit transient node finite element (FEM) method for thermal calculations. The multi-scale microwave-propagation and thermal diffusion phenomena are coupled either directly or indirectly, depending up of the properties of the tissues. The calculated quantities include the absorbed source distribution, heating pattern, and temperature distributions within the tissues consisting of skin, fat, muscle and blood flows. The calculated results are compared with experimental measurements.

An approach to simulation of dual drainage

1999 ◽  
Vol 39 (9) ◽  
pp. 95-103 ◽  
Author(s):  
S. Djordjević ◽  
D. Prodanović ◽  
Č. Maksimović
Keyword(s):  
Numerical Model ◽  
Model Development ◽  
Ground Level ◽  
Surface Flow ◽  
Surface Excess ◽  
Runoff Simulation ◽  
Sewer System ◽  
Excess Water ◽  
Flow Through ◽  
The One

The paper presents the development of the field of urban drainage modelling known as dual drainage - an approach to rainfaill runoff simulation in which the numerical model takes into account not only the flow through the sewer system, but also the flow on the surface. The steps in model development are described, and necessary data, assumptions used and operations to be performed using GIS are discussed. The numerical model simultaneously handles the full dynamic equations of flow through the sewer system and simplified equations of the surface flow. The surface excess water (due to the limited capacity of inlets or to the hydraulic head in the sewer system reaching the ground level) is routed to the neighbour subcatchment (not necessarily the one attached to the downstream network node), using surface retentions, if any.

INMOST Platform Technologies for Numerical Model Development

2020 ◽  
pp. 127-177
Author(s):  
Yuri Vassilevski ◽  
Kirill Terekhov ◽  
Kirill Nikitin ◽  
Ivan Kapyrin
Keyword(s):  
Numerical Model ◽  
Model Development

Sediment carbon fate in phreatic karst (Part 2): Numerical model development and application

2017 ◽  
Vol 549 ◽  
pp. 208-219 ◽  
Author(s):  
A. Husic ◽  
J. Fox ◽  
W. Ford ◽  
C. Agouridis ◽  
J. Currens ◽  
...  
Keyword(s):  
Numerical Model ◽  
Model Development ◽  
Sediment Carbon

scholarly journals A NUMERICAL MODEL OF WAVE/BREAKWATER INTERACTIONS

1982 ◽  
Vol 1 (18) ◽  
pp. 124 ◽  
Author(s):  
D. Ian Austin ◽  
Roger S. Schlueter
Keyword(s):  
Numerical Model ◽  
Finite Difference ◽  
Special Reference ◽  
Model Development ◽  
Discrete Element ◽  
Wave Forces ◽  
Hydrodynamic Code ◽  
Concept Validation ◽  
Validation Stage

A numerical model has been developed to simulate breakwater response to wave impacts with special reference to armor unit behavior and breakwater stability. The model uses a finite difference hydrodynamic code to follow the wave impacts and determine wave forces upon the breakwater components. A discrete element code models the breakwater response and motions. The model rationale and numerical basis are followed by three examples used in this, the concept validation, stage of model development.

scholarly journals The methodology of a locomotive simulation model development within the model-oriented approach

2021 ◽  
Vol 2094 (4) ◽  
pp. 042082
Author(s):  
M S Rublev ◽  
M S Sitnikov ◽  
A A Goriunov ◽  
A V Filimonov ◽  
A A Shakirov
Keyword(s):  
Numerical Model ◽  
Product Design ◽  
Structural Model ◽  
Early Stage ◽  
Block Diagram ◽  
Model Development ◽  
Operating Conditions ◽  
Digital Twins ◽  
Technical Solutions ◽  
Oriented Approach

Abstract The use of mathematical modelling at the early stages of product design makes it possible to substantiate fundamental technical solutions, taking into account all possible (large number) requirements for the product by consumers and operation. At this (early) stage, it is important to use well-tested and convenient tools for designers to create virtual stands and digital twins (DC), confirming compliance, as well as forming the structure of systems and products as a whole. The article discusses a comprehensive methodology for the process of constructing a numerical model of a locomotive for analysing dynamics under various operating conditions. It is based on the top-level structural model (LBM), which is presented in the form of a block diagram and is used at all stages of product design. The required detailing of such a model depends on the actual tasks. The detailed models of the systems that have been developed within the framework of the work are presented.

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