A5078641048- Thermal Regulation in Medicine
- Heat Transfer and Optimization
- Neonatal Respiratory Health Research
- Heat Transfer and Boiling Studies
- Neonatal and fetal brain pathology
- Coronary Interventions and Diagnostics
- Refrigeration and Air Conditioning Technologies
- Fluid Dynamics and Turbulent Flows
- Non-Invasive Vital Sign Monitoring
- Cardiovascular Health and Disease Prevention
- Minerals Flotation and Separation Techniques
- Fluid Dynamics and Mixing
- Mechanical and Thermal Properties Analysis
- Building Energy and Comfort Optimization
- Reservoir Engineering and Simulation Methods
- Heat Transfer Mechanisms
- Combustion and flame dynamics
- Thermoregulation and physiological responses
- Coronary Artery Anomalies
- Medical Imaging Techniques and Applications
- Cerebrovascular and Carotid Artery Diseases
- Radiative Heat Transfer Studies
- Infrared Thermography in Medicine
- Advanced X-ray and CT Imaging
- Ultrasound and Hyperthermia Applications
Silesian University of Technology
2015-2024
Universidade Federal do Rio de Janeiro
2015
Abstract Due to the difficulties in retrieving both time-dependent shapes of vessels and generation numerical meshes for such cases, most simulations blood flow cardiac arteries use static geometry. The article describes a methodology generating sequence 3D based on images different resolutions qualities acquired from ECG-gated coronary artery CT angiography. precision shape restoration method has been validated using an independent technique. original proposed approach also generates each...
The energy balance and heat exchange for newborn baby in radiant warmer environment are considered. present study was performed to assess the body dry loss from an infant warmer, using copper cast anthropomorphic thermal manikin controlled climate chamber laboratory setup. total losses were measured varying surface temperatures (nine levels between 32.5 °C 40.1 °C) ambient air (five 23.5 29.7 °C). Radiant estimated based on wall temperatures. After subtracting part, resulting convective...
In the research, a numerical Computational Fluid Dynamics (CFD) model of pulsatile blood flow was created and analysed. A real geometry aorta its thoracic branches an 8-year old patient diagnosed with congenital heart defect – coarctation used. The inlet boundary condition implemented as User Define Function according to measured values volumetric flow. treated multiphase using Euler-Euler approach. Plasma set primary dominant fluid phase, volume fraction 0.585. morphological elements (RBC...
Abstract Blood flow is most often modeled in vessels whose shape does not change over time. This approach significantly simplifies the calculations and reduces their Temporal vascular deformations affect blood patterns, deposition of atherosclerotic plaques, formation aneurysms, many other phenomena. There are two methods to consider vessel deformations: registration geometry by diagnostic imaging such as CT, MRI, ultrasound or use fluid-structure interaction (FSI) models. The first method...
In the research a numerical Computational Fluid Dynamics (CFD) model of pulsatile blood flow was created and analyzed. A real geometry aorta its thoracic branches 8-year old patient diagnosed with congenital heart defect - coarctation used. The inlet boundary condition were implemented as User Define Function according to measured values volumetric flow. treated multiphase: plasma, set primary fluid phase, dominant volume fraction 0.585 morphological elements in Euler-Euler approach...
Purpose The purpose of this paper is the application computational fluid dynamics model simulating blood flow within aorta an eight-year-old patient with Coarctation Aorta. Design/methodology/approach numerical model, based on commercial code ANSYS Fluent, was built using multifluid Euler–Euler approach interaction between phases described by kinetic theory granular (KTGF). Findings A in arches main branches has been presented. KTGF. and pressure patterns, as well volumetric concentration...
Computer modeling combined with non-invasive measurement modalities may provide a means to advanced diagnosis and treatment of cardiovascular diseases; however, development validation novel methods is often impeded by the challenge gathering relevant clinical data. We present an experimental rig phantom model left common carotid artery developed generate data necessary for computational artery. The flow rates pressures at inlet outlet, deformation were measured simultaneously optical...
Abstract The aim of this paper is to propose a new non-invasive methodology estimate thermogenesis in newborns with perinatal asphyxia (PA) undergoing therapeutic hypothermia (TH). Metabolic heat production (with respect either neonate’s body mass or its surface) calculated from the newborn’s balance, estimating all remaining terms balance utilising results only thermal measurements. measurement devices work standard equipment used for and are equipped Global System Mobile Communications...
The energy balance and heat exchange for newborn baby in infant care bed environment (radiant warmer) are considered. Convective radiant losses from an warmer were studied using copper cast anthropomorphic thermal manikin controlled climate chamber setup. total body loss was measured several mean skin ambient temperatures, leading to transfer coefficient estimation. Streszczenie. Rozwazany jest bilans energii oraz mechanizmy wymiany ciepla dla noworodka w otwartym inkubatorze niemowląt....
The energy balance and heat exchange for newborn baby in infant care bed environment (radiant warmer) are considered. present study was performed to assess the body dry loss from an radiant warmer, using copper cast anthropomorphic thermal manikin controlled climate chamber laboratory setup. total losses were measured varying surface temperatures (nine levels between 32.5oC 40.1oC) ambient air (five 23.5oC 29.7oC). Radiant estimated based on wall temperatures. After subtracting part,...
Combi-steamer condensation hoods are widely used in modern gastronomy.They condense steam produced by the combi-steamer and also filter solid particles, moisture, grease smells.All these factors negatively affect staff dishes, so efficient work of becomes important.A mathematical experimental analysis such a device is described this paper.First measurement methodology was designed measurements air humidity, temperature mass flow rates were performed.The procedure concerned dedicated...
Blood flow in a real geometry of aorta was analysed. The CFD analysis performed using commercial ANSYS/Fluent code. Velocity profile used to mimic inlet conditions during human cardiac cycle. Outlet pressure boundary condition coupled with lumped parameter model (electrical analogy) circulatory system.
Abstract This paper focuses on the heat transfer processes occurring during treatment of neonates suffering from hypoxic-ischemic. is a type brain dysfunction (brain injury) that happens (mainly delivery) when experiences decrease in blood flow (because abnormal circulation) and consequence, oxygen. It frequently results an increase temperature to danger level hypoxia some other organs. Treatment requires specialized cooling device neonate’s body particularly temperature. One methods...
Abstract Perinatal asphyxia (PA) is the 3rd most common cause of neonatal death and one causes severe neurological impairments in children. Current tools measurements mainly based on analysis clinical evaluation laboratory electrophysiological tests do not give consistent data allowing to predict severity hypoxic-ischemic encephalopathy (HIE) until a magnetic resonance imaging (MRI) score performed. The aim this work evaluate usefulness new index, called Thermal Index (TI) assessment degree...
Thermodynamic optimization of thermal devices requires information about the influence operational and structural parameters on its behaviour. The interconnections among can be estimated by tools such as CFD, experimental statistic deviceetc. Despite precise comprehensive results obtained time computations is relatively long. This disadvantage often cannot accepted in case well online control devices. As opposed to CFD neural network or regression characterized short computational time, but...