3/6/2024 0 Comments Vortex flow meterHow Do We Measure the Frequency of the Vortices?Īs vortices form and pass the shedder bar (the bluff body), they create a low pressure as compared to the rest of the fluid. If we can measure the frequency (f), know the Strouhal number (St), know the shedder bar width (d) we can solve for v (velocity). The relationship of the frequency and the flow velocity can be mathematically expressed with the following formula:įrom the equation, we can see that the frequency is proportional to the velocity. This frequency is called the Karmen Vortex Frequency. Von Karman found that if the frequency of these vortices was measured, that the frequency is proportional to the flow velocity that is generating the vortices. The path of these vortices is called the von Karman vortex street. Vortex Flow Meters use the Von Karman Effect to measure the rate of flow of a fluid or gas.Įarly in the 20th century, a Hungarian-American mathematician and physicist, Theodore von Karman, discovered that a fluid or gas flowing perpendicularly pass a bluff body would generate alternating vortices on both sides of the body. Technical Information - Measurement Principle - Vortex Flow Meters - Principle of Operation Yokogawa announcement to Windows XP users regarding Systems products Nano-point Delivery / Nano-point Sampling SU10 Public announcement of Yokogawa’s products Transmitterless SENCOM™ SMART Sensor Platform Plant Annunciator and SOE Recording System Loading, Metering and Blending Automation Yokogawa Pre-Engineered Analyzer Solutions - YES OpreX IT/OT Security Operations Center (SOC)ĭistributed Fiber Optic Temperature Sensor Predictive Maintenance of Pump Cavitation (Cavitation Detection System)Īdvanced Analytical Instrument Management System (AMADAS) Mobile Field Device Management (FieldMate) Remote Plant Performance Operation and Remote Consulting (Digital Twin) OpreX Laboratory Information Management System Platform for Advanced Control and Estimation (Advanced Process Control) Terminal Logistics Suite VP (Terminal Automation)Ĭloud Inventory Management Solutions (Web*VMI™)
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