EÚ-odbor termomechaniky a techniky prostředí
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Searching for a Numerical Model for Prediction of Pressure-Swirl Atomizer Internal Flow
(MDPI, 2022-06-22)Numerical prediction of discharge parameters allows design of a pressure-swirl atomizer in a fast and cheap manner, yet it must provide reliable results for a wide range of geometries and operating regimes. Many authors ... -
On the behavior of inhaled fibers in a replica of the first airway bifurcation under steady flow conditions
(Taylor & Francis, 2022-01-28)Inhaled fibers can potentially cause inflammation of the lung tissue and interstitium, which after long-term exposure may lead to lung cancer, malignant mesothelioma, or pulmonary and pleural fibrosis. To reduce the risk ... -
Visual monitoring of the melting front propagation in a paraffin-based PCM
(EDP Sciences, 2016-11-15)Experiments were carried out in an environmental chamber with the aim to monitor the melting front propagation in a rectangular cavity filled with a paraffin-based Phase Change Material (PCM). The PCM was contained in ... -
Experimental methods for flow and aerosol measurements in human airways and their replicas
(Elsevier, 2018-02-15)Recent developments in the prediction of local aerosol deposition in human lungs are driven by the fast development of computational simulations. Although such simulations provide results in unbeatable resolution, significant ... -
Reduction of CO2 Emissions in Steelmaking by Means of Utilization of Steel Plant Waste Heat to Stabilize Seasonal Cooling Water Temperature
(MDPI, 2021-05-25)Production of overall CO2 emissions has exhibited a significant reduction in almost every industry in the last decades. The steelmaking industry is still one of the most significant producers of CO2 emissions worldwide. ... -
Inhalers and nebulizers: basic principles and preliminary measurements
(E D P SCIENCES, 2017-11-21)Inhalers are hand-held devices which are used for administration of therapeutic aerosols via inhalation. Nebulizers are larger devices serving for home and hospital care using inhaled medication. This contribution describes ... -
Impact of measurable physical phenomena on contact thermal comfort
(EDP Sciences, 2017-05-12)Cabin HVAC (Heating Ventilation and Air-conditioning) systems have become an essential part of personal vehicles as demands for comfortable transport are still rising. In fact, 85 % of the car trips in Europe are shorter ... -
Variations of flow in human airways as a consequence of lung diseases
(EDP Sciences, 2018-06-04)The efficiency of drug delivery administered by inhalation depends, among other factors, such as size and shape of aerosol particles, significantly also on the flow in the airways. As many lung diseases change both the ... -
Internal flow characteristics in scaled pressure-swirl atomizer
(Technical University Liberec, 2018-06-04)Pressure-swirl atomizers are used in a wide range of industrial applications, e.g.: combustion, cooling, painting, food processing etc. Their spray characteristics are closely linked to the internal flow which predetermines ... -
Characterization of aerosol nebulized by Aerogen Solo mesh nebulizer
(EDP Sciences, 2020-11-18)Nebulizers are commonly used devices for inhalation treatment of various disorders. There are three main categories of medical nebulization technology: jet nebulizers, ultrasound nebulizer, and mesh nebulizer. The mesh ... -
Flow Behaviour of Inhaled Fibres – Equations of Motion and Preliminary Results of Real Trajectories Recorded by a High-Speed Camera
(EDP Sciences, 2020-11-18)The ability to precisely predict the fate of inhaled fibres is important for toxicologists as well as for pharmaceutists struggling to utilize fibres as carriers of a medication. However, the complexity of fibre movement ... -
Effect of multiple liquid inlets on mass transfer in rotating packed beds
(EDP Sciences, 2020-11-18)This study deals with optimalization of rotating packed bed design using computational fluid dynamics approach. Comparison of three variants of liquid distributor were performed on 2D geometry. Turbulence was modelled using ... -
Investigation of a Temperature Field of the Steel Billet 150x150 mm Continuously Cast
(EDP Sciences, 2020-11-18)The solidification and cooling of a continuously cast billet and the simultaneous heating of the mold is a very complicated problem of three-dimensional (3D) transient heat and mass transfer. The solving ofuch a problem ... -
Spraying of viscous liquids: influence of the fluids mixing mechanism on the performance of the internal-mixing twin fluid atomizers
(MDPI, 2020-07-30)The thermal usage of liquid fuels implies their combustion, which is a process strongly influenced by the performance of the atomizer, which disrupts the fuel into drops of the required sizes. The spray quality of the ... -
Modelování dýchacích cest jako nástroj pro účinnější inhalační léčbu
(2019-09-04)Obsah přednášky 1. Inženýrský přístup – teorie 2. Konkrétní aplikace – mechanismy usazování částic v plicích 3. Brněnský model plic – experimenty a počítačové modelování 4. Jak funguje počítačové modelování 5. Inhalovaný ... -
Effect of liquid preheating on high-velocity airblast atomization: From water to crude rapeseed oil
(Elsevier, 2019-04-01)Airblast atomization is a suitable model platform to understand atomization physics since the atomizer geometry has an insignificant influence on the spray formation. Besides its theoretical relevance, this configuration ... -
Seasonal COP of an Air-to-Water Heat Pump when Using Predictive Control Preferring Power Production from Renewable Sources in the Czech Republic
(MDPI, 2019-08-22)The paper presents a parametric study evaluating the effects of various predictive controls on the operating parameters of heat pumps. The heat pump represents a significant power appliance in the residential sector. Its ... -
A parametric study of influence of material properties on car cabin environment
(EDP Sciences, 2014-03-25)Recently the author presented the paper describing a car cabin heat load model for the prediction of the car cabin environment. The model allowed to simulate a transient behavior of the car cabin, i.e. radiant ... -
Effect of nanoparticles concentration on the characteristics of nanofluid sprays for cooling applications
(Springer, 2019-03-01)This study addresses the effect of nanofluid synthesis on the rheological properties of the resulting fluid and their consequent effect on the characteristics (size and velocity distribution of droplets, spray cone angle, ... -
Investigation of pressure swirl sprays using Volumetric PIV
(ILASS, 2019-09-04)The volumetric measurement technique (V3V-Flex©) was used to investigate the spray generated by two pressure swirl atomizers (PSAs). Both a simplex pressure swirl atomizer and a spill-return pressure swirl atomizer were ...
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