Laboratoř přenosu tepla a proudění
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A Sequential Inverse Heat Conduction Problem in OpenFOAM
(OpenCFD, 2021-11-21)The solution of the inverse heat conduction problem (IHCP) is commonly found with thesequential algorithm known as the function specification method with explicit updating formulas andsensitivity coefficients of heat flux. ... -
Heat Transfer during Spray Cooling of Flat Surfaces with Water at Large Reynolds Numbers
(Scientific Research publishing, 2016-07-27)We present a new Nusselt number correlation for spray cooling at large Reynolds numbers and high surface temperatures for water sprays impinging perpendicularly onto a flat plate. A large set of experimental data on spray ... -
Shear Strength of Adhesive Bonding of Plastics Intended for High Temperature Plastic Radiators
(MDPI, 2022-04-20)The use of adhesive joints has increased in recent decades due to their competitive features in comparison with other joining methods. They can be used in specific applications where there is no possibility to use alternative ... -
Investigation of effect of electrode polarity on electrochemistry and magnetohydrodynamics using tertiary current distribution in electroslag remelting process
(Springer, 2021-12-06)Transport phenomena including the electromagnetic, concentration of ions, flow, and thermal fields in the electroslag remelting (ESR) process made of slag, electrode, air, mold, and melt pool are computed considering ... -
Reconstructive Mapping from Sparsely-Sampled Groundwater Data Using Compressive Sensing
(Scientific Research Publishing, 2021-05-10)Compressive sensing is a powerful method for reconstruction of sparsely-sampled data, based on statistical optimization. It can be applied to a range of flow measurement and visualization data, and in this work we show the ... -
Influence of Ambient Temperature on Radiative and Convective Heat Dissipation Ratio in Polymer Heat Sinks
(MDPI, 2021-06-12)Miniaturization of electronic devices leads to new heat dissipation challenges and traditional cooling methods need to be replaced by new better ones. Polymer heat sinks may, thanks to their unique properties, replace ... -
Influence of the remaining water layer on the cooling of moving steel surfaces
(Tanger, 2021-09-15)Steel is an integral part of today's life. To obtain the desired mechanical properties of hot rolled steel plates or strips, it is necessary to predict and control the cooling process. Cooling of a hot rolled strip on a ... -
Hydrodynamically enhanced electrochemical mass transfer on the surface of an electrically conductive droplet
(Springer, 2021-04-09)A fully coupled model is proposed to investigate the influence of flow on electrochemical mass transfer at the interface between the electrolyte and an electrically conductive droplet. The electric current flows through ... -
Case study of liquid cooling of automotive headlights with hollow fiber heat exchanger
(Elsevier, 2021-12-04)Thermal performance of small liquid cooling systems based on polymeric hollow fibers was experimentally studied for the cooling of automotive lighting components integrated with high power Light Emitting Diodes (LEDs). ... -
Landfills multiple goal optimization using equationless qualitative relations
(Science Publication, 2014-02-05)Landfills are unique and difficult to measure. Their optimization must be solved with a severe lack of information. The privilege of not utilizing information items based on common sense cannot be afforded, as this represents ... -
On Modelling Parasitic Solidification Due to Heat Loss at Submerged Entry Nozzle Region of Continuous Casting Mold
(MDPI, 2021-08-31)Continuous casting (CC) is one of the most important processes of steel production; it features a high production rate and close to the net shape. The quality improvement of final CC products is an important goal of ... -
Influence of Segmented Rolls on Homogeneity of Cooling in Continuous Casting
(MDPI, 2021-08-02)This paper deals with secondary cooling in a continuous caster. In particular, it deals with cooling inhomogeneity caused by spray arrangement and segmented rolls used for leading the strand. The cooling section is placed ... -
An analysis on energy demands in airborne particulate matter filtration using hollow-fiber membranes
(Elsevier, 2021-05-12)This work analyzes energy requirements for drawing the air through a hollow-fiber membrane (HFM) during air filtration. Polypropylene HFMs varying in inner fiber diameter (230 and ) were used to separate the ASHRAE A2 fine ... -
An Assessment on Average Pressure Drop and Dust-Holding Capacity of Hollow-Fiber Membranes in Air Filtration
(MDPI, 2021-06-24)In this work, we tried to analyze dust loading behavior of polypropylene hollow fiber membranes using average pressure drop models. Hollow fiber membranes varying in fiber diameter were loaded with a standardized test dust ... -
A Numerical Study on the Influence of an Axial Magnetic Field (AMF) on Vacuum Arc Remelting (VAR) Process
(Springer, 2021-07-07)A comprehensive numerical model is proposed to study the influence of an axial magnetic field (AMF) on the solidification behavior of a Titanium-based (Ti–6Al–4V) vacuum arc remelting (VAR) ingot. Both static and time-varying ... -
Remote Cooling of Rolls in Hot Rolling; Applicability to Other Processes
(MDPI, 2021-06-30)A novel method of cooling rolls in hot rolling is proposed. This method uses a combination of solid jet nozzles and specially shaped deflecting vanes. The vanes transform the incoming cylindrical water jet into a flat fan. ... -
Chaotised polymeric hollow fibre bundle as a crossflow heat exchanger in air-water applicationChaotised polymeric hollow fibre bundle as a crossflow heat exchanger in air-water application
(Czech Technical University in Prague, 2020-09-01)Fifteen years ago, polymeric hollow fibre heat exchangers were presented for the first time. Nowadays there are not only the shell-and-tube types as there were at the beginning. In this paper, six chaotised polymeric hollow ... -
Comparison of a Novel Polymeric Hollow Fiber Heat Exchanger and a Commercially Available Metal Automotive Radiator
(MDPI, 2021-04-06)A novel heat exchanger for automotive applications developed by the Heat Transfer and Fluid Flow Laboratory at the Brno University of Technology, Czech Republic, is compared with a conventional commercially available metal ... -
Importance of Melt Flow Direction during Injection Molding on Polymer Heat Sinks’ Cooling Efficiency
(MDPI, 2021-04-07)Polymers with highly conductive fillers could possibly replace standardly used materials, such as aluminum and copper alloys, for passive cooling purposes. The main problem of the composite polymer-based heat sinks is that ... -
Fully Polymeric Distillation Unit Based on Polypropylene Hollow Fibers
(MDPI, 2021-03-26)Access to pure water is a very topical issue today. Desalination represents a promising way of obtaining drinking water in areas of shortage. Currently, efforts are being made to replace the metal components of existing ...
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