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- Title
ESTUDO EXPERIMENTAL DE RESISTÊNCIA HIDRÁULICA DE FLUXO TURBULENTO EM UMA CAMADA COMPACTADA.
- Authors
KULYMBAYEVA, Marzhan Sh.; ORUMBAYEV, Rakhimzhan K.; SEIDALIYEVA, Aiganym B.; OTYNCHIYEVA, Marzhan T.; MUNTS, Vladimir A.
- Abstract
Modern production processes widely involve various apparatus with porous inserts and screens. Similar devices are used to decontaminate industrial emissions or the neutralization of toxic and harmful substances in heat energetics and automotive industries and the utilization of exhaust gases in the non-ferrous metal industry. The operational efficiency of such devices vastly depends on the correctly organized movement of gas or liquid medium, which has a significant influence on heat and mass exchange processes within the reactor and defines Its efficiency rate. This article is about the hydraulic resistance movement of incompressible liquid (air) in a circular tube with porous inserts made from cartridge packs with fine meshes. There were obtained new results and data on hydraulic resistance of porous inserts represented by fine mesh, leveling out the profile of averaged speed before the mesh, and change of longitudinal constituent of the turbulence intensity turbulent flow structure. To calculate the static pressure, some 5x10-4 m diameter drainage holes were used, located in different parts of a tube operating area, within the porous inserts between meshes and after inserts at the unit's stabilizing output region. Measurement of an average speed and impulse characteristics of airflow was performed with a heat loss anemometer set to the constant temperature value. It was shown by the experiment that there is a local balance existing between turbulence energy generation and dissipation processes within the porous inserts represented by fine mesh. As a result, it was found that there is a local balance between the processes of generation and turbulence energy dissipation inside porous inserts made of fine meshes. It was determined that the intensity of turbulence remains at the same level and depends on the geometric characteristics of the meshes and airflow rate.
- Subjects
NONFERROUS metal industries; STATIC pressure; ENERGY dissipation; WASTE gases; LIQUEFIED gases; AIR flow
- Publication
Periódico Tchê Química, 2020, Vol 17, Issue 36, p1212
- ISSN
1806-0374
- Publication type
Article
- DOI
10.52571/ptq.v17.n36.2020.1228_periodico36_pgs_1212_1224.pdf