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Vortex-shedding flowmeter having two bluff bodies

机译:具有两个钝体的涡流流量计

摘要

A vortex-shedding flowmeter comprising two stationary vortex- shedding cross-members (i.e., bluff bodies) disposed transversely to a stream of fluid. Each cross-member has a bluff face with sharp Karman vortex generating edges with independently selected edge to edge widths d of from 10 to 40% of the inside width of the conduit through which the fluid flows and lengths 1 of from 0.3 to 2.0d. The second cross-member is disposed downstream of the first cross-member a distance of from 4 to 15 times the width d of the first cross-member. Any sensor may be used in any location provided it or they sense the Karman vortices generated by co-action of the two cross-members. This flowmeter provides strong signals with a high signal to noise ratio and high Strouhal number.
机译:一种涡流脱落流量计,包括两个横向于流体流布置的固定的涡流脱落横梁(即钝体)。每个横梁都有一个带有尖锐的卡曼涡流的钝面,其产生的边缘具有独立选择的边缘至边缘宽度d,其为流体流过的导管内部宽度的10%至40%,长度1为0.3至2.0d。第二横梁设置在第一横梁的下游,距离是第一横梁的宽度d的4倍至15倍。可以在任何位置使用任何传感器,或者它们可以感测由两个横梁共同作用而产生的卡曼涡旋。该流量计可提供具有高信噪比和高Strouhal数的强信号。

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