Abrupt changes in air pressure in the vicinity of a conductor with flowing electric current
| Autor: | I. R. Prudnikov, V. E. Kunitsyn, Alexander M. Saletsky, N. N. Usmanov |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Fluid Flow and Transfer Processes
Imagination Materials science Atmospheric pressure Mechanical Engineering General Chemical Engineering media_common.quotation_subject Direct current Aerospace Engineering 02 engineering and technology Mechanics 01 natural sciences 010305 fluids & plasmas Conductor Pulse (physics) 020401 chemical engineering Nuclear Energy and Engineering Volume (thermodynamics) 0103 physical sciences 0204 chemical engineering Electric current Current (fluid) media_common |
| Zdroj: | Experimental Thermal and Fluid Science. 109:109867 |
| ISSN: | 0894-1777 |
| DOI: | 10.1016/j.expthermflusci.2019.109867 |
| Popis: | A change of thermodynamic parameters of surrounding air is experimentally investigated in the vicinity of a metal conductor in which electric current flows. Substantial variations of pressure that are comparable with large meteorological variations are experimentally observed upon flowing a direct current pulse with a small amplitude and alternating currents of an industrial frequency through the conductor. Such significant and fast variations of the pressure occur at the instant the current in the conductor changes. Even current pulses with a short duration influence the pressure distinctly. Jumps of the pressure are experimentally observed in an investigated volume upon both building up the current amplitude and switching off the current pulse. These jumps are not typical for a usual cooling or heating of air mixture. It is expected that an exact correspondence between current pulses and the pressure variations makes it possible to create new technical equipment. The possibility of applying experimentally obtained results in device physics and nanotechnology science is of special interest. |
| Databáze: | OpenAIRE |
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