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It's required to decompress with the draining pipe network when there is a relatively high groundwater level outside of the lining channels. The self-draining pipe network is composed of longitudinal collecting underground pipes, transverse communicating pipes and non retern drain valves. The pipe flow might be laminar flow or turbulent flow determined by the discharge. The turbulent flow might be...
Classical N-S equation is of first order accuracy in both time and space. First order scheme only includes first order terms, without the terms of second or higher order. These terms are relative to time and space intervals. As basic elements of fluid research, time and space intervals should be some finite quantities and not be infinitely near to zero as defined in mathematics. If the terms of second...
This paper deals with the Superconducting traction transformer (STT) 1MVA and its cooling. The idea of this usage originated in the SKODA Research Ltd., Pilsen. The paper compares the classical transformer and STT. The second part describes cooling of the STT. This part is complemented by calculations of the heat exchange.
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