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SimVascular is an open source software platform for cardiovascular simulation, providing a complete pipeline from medical image data to volumetric model construction, meshing, and blood flow simulation. Previous workshops and educational programs have utilized SimVascular, but learning assessments have not been used to rigorously quantify gains in conceptual understanding. Goal: The purpose of this...
The water column inside the turret of an FPSO typically undergoes sloshing due to speed as well as wave effects. Sloshing can have detrimental effects and therefore needs to be investigated and minimized. Sloshing occurs at the free surface region. As a result of sloshing, the volume of entrapped water in the turret of an FPSO increases and its acceleration due to the ship's motions induces inertia...
Owing to huge casualty and environmental pollution caused by HNS(Hazardous and Noxious Substance) leakage, accurate prediction modeling must be crucial in coping with the accidents at the early stage. Our project finally aims to develop an engineering prediction model for accurate near-field prediction of diffusive behavior in risk regions, when HNS spills occur using CFD according to various environmental...
Autonomous underwater vehicles (AUV) are attractive platforms for many applications in the off-shore industry. The design and development of an AUV is an expensive and complex task. During the development of these vehicles both at the stage of physical design for construction, as in the stage of the navigation system design, it is critical to estimate and analyze the dynamic behavior of these vehicles...
Dry-type transformer applications are growing in transformer market because the technology is non-flammable, safer and environmental friendly. Since no oil is present in a dry-type transformer for dielectric insulation, solid insulation is often used instead for compact dimensions which however constrains air convection as the major cooling approach. Therefore, how to accurately predict winding temperature...
The presented simulation model of surface tension and wettability based on physical properties of liquids is designed for use in computer graphics. Due to the relatively small surface tension forces the model is useful for simulating liquid of small volume such as droplets. This model can be used in conjunction with various fluid simulation methods, one of the most popular - Marker and Cell - has...
Physicians use charts that are prepared by experiments on animals or humans to prescribe drug dosage for patients. This method requires some precious amount of time by the Ministry of Health to approve new drugs to be used in healthcare centers. Three-dimensional modeling of the inner medulla by considering the known physiological features help us to predict the distribution of a drug or any minerals...
This paper presents computer analysis of how geometry of reconstructed gastrointestinal tract can influence outcome of Billroth II gastric resection. We performed three-dimensional computer simulation in order to predict duodenal stump blowout. For creation of initial three dimensional FE models of preoperative gastroduodenal region we used data from Multi Slice Computer Tomography (MSCT). Using the...
In this manuscript, a systematic detail on the approaches and considerations for producing a Computational Fluid Dynamics simulation model of palm oil expression using screw press is presented. The behavior of oil palm fruitlet components (fiber, nut, and oil) during oil extraction process will be investigated for a deeper understanding on the process since manual observation is difficult as the screw...
An overview of flow simulations for the offshore wind industry is given. The analyses concern blades, turbines and whole wind power farms. Both aerodynamic simulations and hydrodynamic simulations are considered. Applications are taken from the experience of DNV GL Group.
Coarctation of the aorta (CoA) is one of the most common congenital cardiac anomalies that could be corrected by surgery. However, the effects of surgical anastomosis on aortic arch flow are still unknown. In this study, a unique three-dimensional way was utilized to measure the growth of anastomotic site and computational fluid dynamics (CFD) was applied to investigate the hemodynamic effects of...
In this paper, we present two-dimensional modeling and simulation of blood vessel using COMSOL Multiphysics. The rationale behind this study is that mathematical modeling and numerical simulation can lead to better understanding of the phenomena involved in vascular diseases. This study assumes that the fluid is laminar, non-Newtonian, viscous and compressible and the arterial wall is elastic. Parameters...
In this work, by numerical simulation using a commercial CFD (computational fluids dynamics) code, were obtained the velocity fields and thermal fields, inside of an indirect type natural convection solar food-dryer. For validating the numerical simulation, was developed an experimental model of an indirect type natural convection solar food-dryer. The food-dryer was instrumented with thermocouples...
A transient laminar Newtonian three-dimensional CFD simulation has been studied for milk flow in a phantom model of the 6-generations human lactating breast branching system. Milk is extracted by the cyclic pattern of suction from the alveoli through the duct and to the nipple. The real negative (suction) pressure data are applied as an outlet boundary condition in nipple. In this study, the commercial...
This paper describes Floasys, a web-based platform to foster the collaboration among Computational Fluid Dynamics analysts and to promote model reuse by centrally managing simulation data and providing metadata annotations and search functionality over them. In this way, CFD analysts access to simulation data and results performed by different engineers and are able to leverage on them to make the...
In recent years, sediment scour near bridge piers and abutment is a serious problem which cause nationwide concern because it has resulted in more bridge failures than other causes. After this question arose, more and more numerical analyses about this problem have been carried out. In this study, computational model simulations using a 3D Computational Fluid Dynamics (CFD) model were conducted to...
2D color Doppler imaging (CDI) is currently the clinical standard to assess the mitral regurgitation (MR) severity. However, due to technical and operational limitations, commonly used diagnostic approaches suffer from known shortcomings: inadequate reliability, poor reproducibility and heavy user-dependency. Aiming at improving the quality of medical assessment, an efficient numerical reconstruction...
The design and development of small scale aerial robots has been currently hindered by the lack of applicability of conventional aerodynamics equations/principles to the small size vehicles flying at extremely low Reynolds number. Also conventional optimization techniques and algorithms have shown very limited success in these applications. Trial and error has been the most effective design tool in...
Breath training is an important part in the pronunciation recovery process, we simulate the fluent of air in the the upper respiratory tract, use computational fluid dynamic to build the impaired hearing children's pronunciation recovery system, and we have tasted the reliability of the system by experimental. We study the two parts in the breath process by the dynamic fluid computational method,...
The aerodynamic characteristics directly affect the stability, driving characteristics, safety, operation, and oil consumption of automobiles. This study examines the aerodynamic drag force acting over the car body using CFD analysis and results were validated experimentally by conducting the wind tunnel test. The drag force acting over the car body is determined by both numerical and experimental...
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