scholarly journals The CAD-Compatible VHP-Male Computational Phantom

2020 ◽  
pp. 309-323
Author(s):  
Gregory M. Noetscher
Keyword(s):  
Numerical Simulation ◽  
Diagnostic Techniques ◽  
Anatomical Features ◽  
Simulation Techniques ◽  
Medical Diagnostic ◽  
The Subject ◽  
External Stimuli ◽  
Computational Phantoms ◽  
Computational Phantom ◽  
Visible Human

AbstractAnatomically accurate and numerically efficient computational phantoms of humans are essential to characterizing the response of a body to a variety of electromagnetic, acoustic and other types of external stimuli. In conjunction with advances in numerical simulation techniques and computational hardware, these computational phantoms enable exploration of innovative and exciting applications, from medical diagnostic techniques and therapeutic treatments to new ways of on- and in-body communications. However, in order to provide realistic estimates through simulation, the model must represent the subject as closely as possible, necessitating that all relevant anatomical features are captured. If this is not accomplished, the model will misrepresent the true physical environment, and critical information will not be captured during the simulation. This work presents a model of a male subject based on the Visible Human Project dataset. Each component of the model is constructed of triangular surface elements, making it compatible with CAD packages and facilitating its use in simulations based on major numerical methodologies. A description of the model, the procedure used for its construction and a baseline simulation are presented together with future integration and augmentation ideas.

Simulation and Modeling of Turbulent Flows

1996 ◽  
Keyword(s):  
Numerical Simulation ◽  
Turbulent Flow ◽  
Turbulent Flows ◽  
Simulation And Modeling ◽  
Simulation Techniques ◽  
Rational Development ◽  
Group Methods ◽  
Turbulent Closure ◽  
The Subject ◽  
Renormalization Group Methods

This book provides students and researchers in fluid engineering with an up-to-date overview of turbulent flow research in the areas of simulation and modeling. A key element of the book is the systematic, rational development of turbulence closure models and related aspects of modern turbulent flow theory and prediction. Starting with a review of the spectral dynamics of homogenous and inhomogeneous turbulent flows, succeeding chapters deal with numerical simulation techniques, renormalization group methods and turbulent closure modeling. Each chapter is authored by recognized leaders in their respective fields, and each provides a thorough and cohesive treatment of the subject.

scholarly journals An introduction to Acoustic Emission Analysis (AEA) based medical diagnostic techniques: Screening and Monitoring of cartilage defects in knee joint osteoarthrosis

2020 ◽  
Vol 6 (3) ◽  
pp. 518-521
Author(s):  
Subke Joerg ◽  
Krueger Sabine ◽  
Junker Heinz-Otto ◽  
Schwalbe Hans-Joachim ◽  
Franke Ralf-Peter ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Load Transfer ◽  
Plane Surface ◽  
Cartilage Damage ◽  
Diagnostic Techniques ◽  
Outer Edge ◽  
Cartilage Defects ◽  
Emission Analysis ◽  
Medical Diagnostic ◽  
Therapeutic Measures

AbstractClinical studies have shown that during standardized movements the Acoustic Emission (AE) from lesions in articular cartilage can be assessed. Specific lesions produce specific acoustic signals, therefore it is possible to evaluate the character of cartilage damage. Consequently it is possible to evaluate the condition of the joint cartilage in order to enhance therapy. Patients performed series of knee bends, first on a plane surface in order to assess the cartilage lesions. Then patients performed knee bends on boards simulating orthopaedic insoles by means of inner and outer edge elevations. Insoles aim at relieving the lesioned areas of cartilage from loads and strain. AEA monitoring reveals the effects of a shift of the zone of load transfer immediately and is an adequate tool for the diagnosis as well as the monitoring of therapeutic measures.

A Comparison of Self-Rectifying Turbines for OWC Based Wave Energy Power Extracting Device Using Numerical Simulation

2002 ◽  
Author(s):  
A. R. Ansari ◽  
H. B. Khaleeq ◽  
A. Thakker
Keyword(s):  
Numerical Simulation ◽  
Wave Energy ◽  
Sea Water ◽  
Time History ◽  
Flow Conditions ◽  
Wells Turbine ◽  
Impulse Turbine ◽  
Simulation Techniques ◽  
Simple Geometry ◽  
Wide Range

This paper presents a comparison of self-rectifying turbines for the Oscillating Water Column (OWC) based Wave Energy power extracting device using numerical simulation. The two most commonly used turbines for OWC based devices, the Impulse and the Wells turbines were evaluated under real sea simulated conditions. Assuming the quasi-steady condition, experimental data for both 0.6m turbines with 0.6 hub to tip ratio was used to predict their behavior under real sea conditions. The real sea water surface elevation time history data was used to simulate the flow conditions using standard numerical simulation techniques. A simple geometry of the OWC was considered for the simulation. The results show that the overall mean performance of an Impulse turbine is better than the Wells turbine under unsteady, irregular real sea conditions. The Impulse turbine was observed to be more stable over a wide range of flow conditions. This paper reports the comparison of performance characteristics of both these turbines under simulated real sea conditions.

What is the Sense of Life, and How Can We Study It? Review of the monograph: Sources of the sense of life. A new method of personality psychodiagnostics, by K.V Karpinskij

2021 ◽  
pp. 228-234
Author(s):  
V.A. Mazilov ◽  
Keyword(s):  
Meaning Of Life ◽  
Psychological Research ◽  
Diagnostic Techniques ◽  
New Method ◽  
Methodological Issues ◽  
New Techniques ◽  
Advantages And Disadvantages ◽  
The Subject ◽  
Diagnostic Research ◽  
Diagnostic Complex

The article is a review of the book "Sources of the meaning of life: a new method of personality psychodiagnostics" by the Belarusian psychologist K.V. Karpinskij. It is argued that the meaning of life became the subject of special psychological research only in the 20th century. In recent years, there have been many breakthroughs in this area, and undoubted progress is visible. There was a transition to the interpretation of the meaning of life as a systemic, that means, in other words, multicomponent and multilevel mental education. In his previous works K.V. Karpinskij subjected the problem of the psychology of the meaning of life to a comprehensive analysis. This book has no analogues among the observable thematic literature and contains new theoretical ideas, original methodological solutions and rich factual material, which together form a new look at the key methodological issues of the psychology of the meaning of life. First of all, this is a question about the subject and method of research. Despite the fact that the study of the psychology of the meaning of life is largely represented in foreign psychology, the author of the monograph consistently adheres to the methodology of Russian psychology. The book offers the author's methodology "Sources of the meaning of life", which was created with a full understanding of the advantages and disadvantages, opportunities and limitations of existing foreign analogues. Being a diagnostic complex in its composition, this technique has incorporated proven diagnostic techniques, as well as completely new techniques for studying the meaning of life. The methodology clearly surpasses the existing tools in its diagnostic (research) capabilities.

Modelling a helicopter rotor’s response to wake encounters

2004 ◽  
Vol 108 (1079) ◽  
pp. 15-26 ◽  
Author(s):  
G. R. Whitehouse ◽  
R. E. Brown
Keyword(s):  
Numerical Simulation ◽  
Numerical Simulations ◽  
Helicopter Rotor ◽  
Forward Speed ◽  
Transport Aircraft ◽  
Simulation Techniques ◽  
Airport Capacity ◽  
Aircraft Wake ◽  
The Impact ◽  
Rotary Wing

In recent years, various strategies for the concurrent operation of fixed-and rotary-wing aircraft have been proposed as a means of increasing airport capacity. Some of these strategies will increase the likelihood of encounters with the wakes of aircraft operating nearby. Several studies now exist where numerical simulations have been used to assess the impact of encounters with the wakes of large transport aircraft on the safety of helicopter operations under such conditions. This paper contrasts the predictions of several commonly-used numerical simulation techniques when each is used to model the dynamics of a helicopter rotor during the same idealised wake encounter. In most previous studies the mutually-induced distortion of the wakes of the rotor and the interacting aircraft has been neglected, yielding the so-called ‘frozen vortex’ assumption. This assumption is shown to be valid only when the helicopter encounters the aircraft wake at high forward speed. At the low forward speeds most relevant to near-airfield operations, however, injudicious use of the frozen vortex assumption may lead to significant errors in predicting the severity of a helicopter’s response to a wake encounter.

Categorized Application Technology of Numerical Simulation on Electronic Equipment Thermal Design

2009 ◽  
Author(s):  
Yasuyuki Yokono ◽  
Katsumi Hisano ◽  
Kenji Hirohata
Keyword(s):  
Numerical Simulation ◽  
Product Development ◽  
Statistical Approach ◽  
Thermal Design ◽  
Electronic Equipment ◽  
Product Development Process ◽  
Design Stage ◽  
Application Technology ◽  
Simulation Techniques ◽  
Simulation Based

In order to utilize a numerical simulation on a product development for electronic equipment, not only the simulation techniques themselves, but the application technologies of the simulation in the product design, were examined. The design process of electronic equipment was categorized into four stages, which were a concept, a function, a layout and a parameter design. Each design stage consists of a specifying that a human decide the specification for the next stage and a verification whether the specification satisfy the previous stage requirements. The specifying and the verification are conducted over and over again. Numerical simulation is corresponded to the verification and is used to accelerate this iteration instead of experiments. The examples of numerical simulation corresponding to these four verifications were shown in the present paper. There are few examples in last two type of simulation. The progress of the numerical technology for function and concept verification is expected. The product development process requires not only numerical simulation based on physics but also statistical approach.

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