The Experts below are selected from a list of 255 Experts worldwide ranked by ideXlab platform
Tomasz Stelmach - One of the best experts on this subject based on the ideXlab platform.
-
Numerical investigation of flow distribution in tubular space of fin-and-tube heat exchanger
MATEC Web of Conferences, 2018Co-Authors: Tomasz StelmachAbstract:This paper presents the experimental and numerical investigation of flow distribution in the tubular space of cross-flow fin-and-tube heat exchanger. The tube bundle with two rows arranged in staggered formation is considered. A standard heat exchanged manifold, with inlet Nozzle pipe located asymmetrically is considered. The Outlet Nozzle pipe is located in the middle of the Outlet manifold. A developed experimental setup allows one to measure volumetric flow rate in heat exchanger tubes using the ultrasonic flowmeters. The measurement results are then compared with CFD simulation in ANSYS CFX code using the SSG Reynolds Stress turbulence model, and a good agreement is found for tube Re numbers varied from 1800 to 3100.
-
Numerical and experimental study of flow distribution in tubular space of fin-and-tube heat exchanger with modified inlet manifold
MATEC Web of Conferences, 2018Co-Authors: Tomasz StelmachAbstract:This paper presents the experimental and numerical investigation of flow distribution in the tubular space of cross-flow fin-and-tube heat exchanger. The tube bundle with two rows arranged in staggered formation is considered. A modified heat exchanged manifold, with inlet Nozzle pipe located asymmetrically is considered. The Outlet Nozzle pipe is located in the middle of the Outlet manifold, with a standard shape. An experimental stand allows one to investigate the volumetric flow rate in heat exchanger tubular space using the ultrasonic flowmeters. Various inlet mass flow rate i.e. 3 m3/h, 4 m3/h and 5 m3/h are considered. The experimental results are compared with CFD simulation performed in ANSYS CFX program using the SSG Reynolds Stress turbulence model. A relatively good agreement is found for tube Re numbers varied from 1800 to 3100.
J. Urík - One of the best experts on this subject based on the ideXlab platform.
-
Photometric flowmeter for measuring slow vertical water flow in wells
Near Surface Geophysics, 2009Co-Authors: J. Urík, Stanislav Mares, Miroslav Kobr, J. Lukeš, S. ŘezaninaAbstract:New construction of a high resolution borehole flowmeter is presented. The logging tool is equipped with an injector enabling to create in the streaming water a colour mark using the food dye Brilliant Blue (E133) as a tracer. A pair of photometric sensors is located in the vertical distance 0.05 m and 0.1 m above and below the special Outlet Nozzle of the injector. The probe is capable of measuring vertical flow velocities in the range 10 -4 –10 -2 m/s or vertical flow rates in the range 0.001–0.1 l/s. The proper function and the reliability of the logging tool were checked in the model of the well under laboratory conditions and in two boreholes with different flow rate patterns, one with a very low flow rate upwards and the other with a very low flow rate downwards.
-
Photometric Flowmeter for Measuring Slow Vertical Water Flow in Wells
Near Surface 2008 - 14th EAGE European Meeting of Environmental and Engineering Geophysics, 2008Co-Authors: J. Urík, Stanislav Mares, Miroslav Kobr, S. RezaninaAbstract:The logging tool is equipped with injector enabling to create in the streaming water a colour mark using the food dye Brilliant Blue (E155) as a tracer. A pair of photometric sensors is located in the axis of the flowmeter in a distance 5 and 10 cm above and below the special Outlet Nozzle of the injector. The probe is capable to measure vertical flow velocities in the range 10E-4 to 10E-2 m/s or vertical flow rates in the range 10E-6 to 10E-4 m3/s. The proper function and reliability of the logging tool were checked in the model of the well under laboratory conditions.
S. Řezanina - One of the best experts on this subject based on the ideXlab platform.
-
Photometric flowmeter for measuring slow vertical water flow in wells
Near Surface Geophysics, 2009Co-Authors: J. Urík, Stanislav Mares, Miroslav Kobr, J. Lukeš, S. ŘezaninaAbstract:New construction of a high resolution borehole flowmeter is presented. The logging tool is equipped with an injector enabling to create in the streaming water a colour mark using the food dye Brilliant Blue (E133) as a tracer. A pair of photometric sensors is located in the vertical distance 0.05 m and 0.1 m above and below the special Outlet Nozzle of the injector. The probe is capable of measuring vertical flow velocities in the range 10 -4 –10 -2 m/s or vertical flow rates in the range 0.001–0.1 l/s. The proper function and the reliability of the logging tool were checked in the model of the well under laboratory conditions and in two boreholes with different flow rate patterns, one with a very low flow rate upwards and the other with a very low flow rate downwards.
S. Rezanina - One of the best experts on this subject based on the ideXlab platform.
-
Photometric Flowmeter for Measuring Slow Vertical Water Flow in Wells
Near Surface 2008 - 14th EAGE European Meeting of Environmental and Engineering Geophysics, 2008Co-Authors: J. Urík, Stanislav Mares, Miroslav Kobr, S. RezaninaAbstract:The logging tool is equipped with injector enabling to create in the streaming water a colour mark using the food dye Brilliant Blue (E155) as a tracer. A pair of photometric sensors is located in the axis of the flowmeter in a distance 5 and 10 cm above and below the special Outlet Nozzle of the injector. The probe is capable to measure vertical flow velocities in the range 10E-4 to 10E-2 m/s or vertical flow rates in the range 10E-6 to 10E-4 m3/s. The proper function and reliability of the logging tool were checked in the model of the well under laboratory conditions.
Miroslav Kobr - One of the best experts on this subject based on the ideXlab platform.
-
Photometric flowmeter for measuring slow vertical water flow in wells
Near Surface Geophysics, 2009Co-Authors: J. Urík, Stanislav Mares, Miroslav Kobr, J. Lukeš, S. ŘezaninaAbstract:New construction of a high resolution borehole flowmeter is presented. The logging tool is equipped with an injector enabling to create in the streaming water a colour mark using the food dye Brilliant Blue (E133) as a tracer. A pair of photometric sensors is located in the vertical distance 0.05 m and 0.1 m above and below the special Outlet Nozzle of the injector. The probe is capable of measuring vertical flow velocities in the range 10 -4 –10 -2 m/s or vertical flow rates in the range 0.001–0.1 l/s. The proper function and the reliability of the logging tool were checked in the model of the well under laboratory conditions and in two boreholes with different flow rate patterns, one with a very low flow rate upwards and the other with a very low flow rate downwards.
-
Photometric Flowmeter for Measuring Slow Vertical Water Flow in Wells
Near Surface 2008 - 14th EAGE European Meeting of Environmental and Engineering Geophysics, 2008Co-Authors: J. Urík, Stanislav Mares, Miroslav Kobr, S. RezaninaAbstract:The logging tool is equipped with injector enabling to create in the streaming water a colour mark using the food dye Brilliant Blue (E155) as a tracer. A pair of photometric sensors is located in the axis of the flowmeter in a distance 5 and 10 cm above and below the special Outlet Nozzle of the injector. The probe is capable to measure vertical flow velocities in the range 10E-4 to 10E-2 m/s or vertical flow rates in the range 10E-6 to 10E-4 m3/s. The proper function and reliability of the logging tool were checked in the model of the well under laboratory conditions.
