การศึกษาและออกแบบเครื่องวัดอัตราการไหลน้ำมันเชื้อเพลิงแบบวอร์เท็กซ์ / สิริพงศ์ เอี่ยมชัยมงคล = Study and design of a vortex fuel flowmeter / Siripong Eamchaimongkol
This research was the study and design of a vortex flowmeter for measuring the fuel flow rate of the vehicle engine. The important part of this flowmeter was the application of the vibration theory and the optoelectronic principle for measuring the vortex frequency. The cylindrical bluff body with diameter of 1.00 mm. and 1.50 mm. were used as the vortex generator in the flowmeter. The flowmeter was tested using both water and gasoline. The accuracy of the flowmeter was obtained by accumulated volume method. The results shown that the flowmeter could measure the fluid flow in narrow range. The flowmeter with 1.00 mm. diameter vortex generator could measure the water flow rate within the range of 2.24 ml/s. to 3.47 ml/s. and could measure the gasoline flow rate within the range of 2.00 ml/s. to 3.16 ml/s. When the bluff body's diameter was changed to 1.50 mm., the measurable range and resolution were also changed. The flowmeter with 1.50 mm. diameter vortex generator could measure the water flow rate within the range of 1.82 ml/s. to 2.35 ml/s. and could measure the gasoline flow rate within the range of 1.61 ml/s. to 2.24 ml/s. The error of the flowmeter was less than 2 percents of measured volume at steady flow.
