Department of Mathematics, Monmouth University, West Long Branch, NJ, USA
Atherosclerotic lesions preferentially develop in certain regions like bifurcations, branches, and bends [1, 2]. A possible explanation for such a preferential localization of atherosclerosis is that the geometry of the vessel influences the blood flow pattern. It suggests that the arterial geometry plays an important role in determining the localized blood flow information. Thus hemodynamic ...
Numerical Simulation of Blood Flow in a Straight Artery Under the Influence of a Magnetic Field - new
G. C. Shit, A. Sinha, A. Mondal, S. Majee
Jadavpur University, Kolkata, West Bengal, India
In this work, we have developed a three-dimensional numerical simulation for blood flow through an arterial segment in the presence of an externally applied magnetic field. The study bears the potential applications in simulation-based medical planning system for cardiovascular disease that provides computational methods to evaluate alternative surgical treatment. This study also motivates ...
An Efficient Finite Element Analysis on an RF Structure Used to Evaluate the Effect of Microwave Radiation on Uveal Melanoma Cells
A. Dulipovici, D. Roman, I. Stiharu, and V. Nerguizian
École de technologie supérieure, Montreal, Quebec, Canada
Concordia University, Montreal, Quebec, Canada
The use of Microwave/RF energy on cancer cells is explored for tumor ablation using medium power level ranging between a few Watts to about 50 Watts. In this research, low power levels, less than 100 mWatt, are used to evaluate the effect of this energy on Uveal melanoma cells by proliferation tests. The COMSOL simulation of the RF structure used to evaluate the radiation energy on ...
A. Jeremic, and T. Gadkari
McMaster Univerisity, Hamilton, ON, Canada
In this paper, we develop an inverse finite-element model for estimating elasticity of the arterial wall. We model the blood flow using COMSOL’s Structural Mechanics module, and use the resulting nonlinear functions corresponding to the Navier-Stokes equations in the presence of elastic (immersed) boundary in formulating the cost function.We derive the corresponding least-squares and maximum ...
A. Avanzini, and G. Donzella
Department of Mechanical and Industrial Engineering, University of Brescia, Brescia, Italy
The mitral valve apparatus is a complex and refined mechanism located between the left atrium and the left ventricle of the heart which can manifest various kinds of pathologies. In order to support identification of potentially critical conditions resulting from some typical cardiosurgery operations, it is important to develop models of the mitral valve that enable prediction of both stress in ...
M. Zell, D. Cronin, D. Morgan, F. Marra, and J. Lyng
School of Agriculture, Food Science and Veterinary Medicine, Agriculture and Food Science Centre, College of Life Sciences, UCD Dublin, Ireland
Dipartimento di Ingegneria Chimica e Alimentare, Università degli Studi di Salerno, Italy
Pasteurization of solid food undergoing ohmic heating has been analyzed using COMSOL Multiphysics on the basis of a previously validated multiphysics model. The simulation of pasteurization by ohmic heating involves simultaneous solution electrical potential within the food, heat transfer, and the kinetics transport of death of microorganisms. In the model, thermo-physical and electrical ...
A. Chanda, A.R. Choudhury, G. Ray, K. Dasgupta, and D. Nag
Jadavpur University, Kolkata, West Bengal, India
Atherosclerosis in arteries is caused by the formation of stenosis : fatty depositions, on the artery wall. In current medicine, the practice is to observe the maximum percentage occlusion at any arbitrary cross-section and diagnose the patient on that basis, which might not always present the real picture due to non-uniformity of the stenosis thickness. The present work attempts to simulate the ...
Modeling of Retinal Electrical Stimulation Using a Micro Electrode Array Coupled with the Gouy-Chapman Electrical Double Layer Model to Investigate Stimulation Efficiency
F. Dupont, R. Scapolan, C. Condemine, J.F. Bêche, M. Belleville, and P. Pham
CEA, LETI, Minatec, Grenoble, France
The electrical stimulation for retinal implant has known significant improvements in the last decades with many implantations and experimentations. The ability to create better controlled and adapted signals to increase the efficiency in stimulation is a major objective. The aim of this study is to develop a numerical platform based on COMSOL Multiphysics to simulate different waveforms. The ...
Simulation of a Magnetic Induction Method for Determining Passive Electrical Property Changes of Human Trunk Due to Vital Activities
H. Mahdavi, J. Rosell Ferrer
Universitat Politècnica de Catalunya, Barcelona, Spain
The human body consists of many different types of tissues each with specific passive electrical properties. Vital activities lead to a characteristic change of these properties and geometrical changes. Magnetic induction is a non-contact method which can be used to determine these changes. The method is based on the creation of a primary magnetic field that will produce eddy currents in the ...
A Simplified Numerical Model for Simulating Sliding Door and Surgical Staff Movement in an Operating Theater
Dipartimento di Energetica, Università di Firenze, Firenze, Italy
This paper deals with a numerical investigation on sliding door and people moving effects on the indoor climate of a standard ISO5 class OT with an ultraclean air filter system and a total ceiling unidirectional diffuser. A simple method to analyze the effects on the OT climate by different sliding door conditions combined with crossing persons and persons with a stretcher crossing is provided. ...