Transcription of STATIC, STAGNATION, AND DYNAMIC PRESSURE
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STATIC, STAGNATION, AND DYNAMIC PRESSURE
STATIC, STAGNATION, AND DYNAMIC PRESSURESB ernoulli equation is Inthisequationpiscalledstaticpressure, ,iftheinstrumentwerestaticwithrespecttof lowingfluid, , , tap ,drilledcarefullyinthewall, gzVp ME304 51 Inafluidstreamfarfromawall,orwherestream linesarecurved,accuratestaticpressuremea surementscanbemadebycarefuluseofastaticp ressureprobe, , (Pitottube).Inincompressibleflow,applyin gBernoulliequationbetweenpointsinthefree streamandatthenoseoftubeandtakingz=0atth etubecenterline,wegetwhereP0isthestagnat ionpressure, ,weget,and for the speed 2220200 VpVp 2021 Vpp 221V ppV 0221 ppV 02ME304 52 The static PRESSURE corresponds to a point Ais read from the wall static PRESSURE tap. The stagnation pressureis measured directly at Aby the total head probes are combined as in pitot-static tube.
Flow measurement refers to the ability to measure the velocity, volume flow rate, or mass flow rate of any liquid or gas. There are many types of devices used for flow measurement. Many of these devices use the rinciple of Bernoulli equation. The choice of a flow meter is influenced by accuracy required, range, cost,
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