On the flow through the human female urethra

摘要: The flow characteristic for a human female urethra is determined by direct measurement of rate and pressure difference data. measurements are made on full-scale physical model in its open state, which was created using dimensional information taken from video cystograms. measured data therefore include viscous dissipation effects associated with developing flow, changes cross-sectional area direction. These often ignored mathematical models this system. may assist the development testing more realistic urine flow. compared based straight tube uniform diameter carrying fully developed turbulent When chosen to be equal distal urethra, it observed that predicted provides good first approximation characteristic, despite substantial differences geometry regime between actual