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Laminar-turbulent transition in a constricted tube: Comparison of Reynolds-averaged Navier–Stokes turbulence models and large eddy simulation with experiments 

Elcner, Jakub; Lízal, František; Jedelský, Jan; Tuhovčák, Ján; Jícha, Miroslav (SAGE Journals, 2019-05-27)
Constricted tubes appear in many engineering as well as biological systems such as blood vessels or pulmonary airways. The aim of this article is to test the ability of different turbulence models to predict the flow field ...
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The role of the combined use of experimental and computational methods in revealing the differences between the micron -size particle deposition patterns in healthy and asthmatic subjects 

Farkas, Árpád; Lízal, František; Jedelský, Jan; Elcner, Jakub; Karas, Jakub; Bělka, Miloslav; Mišík, Ondrej; Jícha, Miroslav (Elsevier, 2020-07-10)
Quantification of airway deposition of aerosol particles is essential for the assessment of health risks of detrimental particles. Knowledge of deposition distribution is important also in the case of treatment with ...
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Internal flow characteristics in Spill-return pressure-swirl atomizers 

Malý, Milan; Sapík, Marcel; Cejpek, Ondřej; Lízal, František; Ondráček, Vladimír; Jícha, Miroslav; Jedelský, Jan (ILASS, 2019-09-04)
The spray produced by pressure-swirl atomizers strongly depends on the character of their internal flow. Flow field inside a swirl chamber of small pressure-swirl spill-return atomizers was examined using high-speed imaging ...
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The influence of spill-line geometry on a spray generated by a pressure-swirl atomizer 

Malý, Milan; Janáčková, Lada; Jedelský, Jan; Jícha, Miroslav (EDP Sciences, 2016-03-28)
An experimental investigation of characteristics of spray generated by a pressure-swirl atomizer (spill-return type) was performed using shadowgraphy and Phase-Doppler Anemometry (PDA). Several different geometries of the ...
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Experimental verification of boundary conditions for numerical simulation of airflow in a benchmark ventilation channel 

Lízal, František; Niedoba, Pavel; Šeda, Libor; Jedelský, Jan; Jícha, Miroslav (EDP Sciences, 2016-03-28)
Correct definition of boundary conditions is crucial for the appropriate simulation of a flow. It is a common practice that simulation of sufficiently long upstream entrance section is performed instead of experimental ...
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Influence of operating conditions and atomizer design on circumferential liquid distribution from small pressure-swirl atomizer 

Malý, Milan; Janáčková, Lada; Jedelský, Jan; Jícha, Miroslav (EDP Sciences, 2017-05-12)
The spray symmetry is an important aspect in most practical applications. However, it is often an overlooked parameter. A measurement of circumferential distribution was carried out by a circular-sectored vessel on several ...
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Heat Transfer and Pressure Drop Measurement in Minichannels 

Hejčík, Jiří; Jícha, Miroslav (EDP Sciences, 2012-04-16)
This paper describes the suitable techniques for the heat transfer and pressure drop measurement in smooth tubular channels with the internal diameter less than 5 mm. The first experimental data are mentioned and their ...
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Twin-fluid atomization of viscous liquids: The effect of atomizer construction on breakup process, spray stability and droplet size 

Mlkvik, Marek; Stähle, Philipp; Schuchmann, Heike P.; Gaukel, Volker; Jedelský, Jan; Jícha, Miroslav (Elsevier, 2015-08-25)
This study focuses on the low-pressure spraying of viscous liquids ( = 60, 147 and 308 mPa s) using four types of internal-mixing twin-fluid atomizers.
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Simulation of Airway Deposition of an Aerosol Drug in COPD Patients 

Farkas, Árpád; Lízal, František; Jedelský, Jan; Elcner, Jakub; Horváth, Alpár; Jícha, Miroslav (MDPI, 2019-04-01)
Medical aerosols are key elements of current chronic obstructive pulmonary disease (COPD) therapy. Therapeutic effects are conditioned by the delivery of the right amount of medication to the right place within the airways, ...
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A parametric study of influence of material properties on car cabin environment 

Pokorný, Jan; Fišer, Jan; Jícha, Miroslav (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 ...
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Jícha, Miroslav (74)
Jedelský, Jan (45)Lízal, František (28)Elcner, Jakub (14)Malý, Milan (13)Bělka, Miloslav (10)Fišer, Jan (10)Pokorný, Jan (8)Zaremba, Matouš (8)Hejčík, Jiří (6)... View MoreSubjectCFD (9)aerosol deposition (3)Airflow (3)atomizace (3)heat transfer (3)human lungs (3)inlet boundary condition (3)Pressure-swirl (3)Thermal comfort (3)Two-phase flow (3)... View MoreDate Issued2010 - 2020 (73)2008 - 2009 (1)

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