Based On Fluent Of V-cone Flowmeter Numerical Simulation And Experimental Research

V-cone flowmeter is a new type of differential pressure flowmeter, Compared with the traditional differential pressure flowmeter, V-cone flowmeter has many advantages, such as stabilization,lower permanent pressure loss and wide measurement range ect. Especially for some special situations, such as the measurement of Waste incineration power generation, coke oven gas measurement,wet gas in near shore oil field and so on. Because of these characteristics, V-cone flowmeter has been lots of research in domestic and foreign. Experiments show that pyramidal geometry of the V-cone's significantly affect the properties,especially effect of the flow filed and outflow coefficient C. However, there have no uniform standards of V-cone flowmeter, so the Study is meaningful.The paper is to start the V-cone's pyramidal geometry affect of the discharge coefficient, by Computational Fluid Dynamics (CFD) simulation software Fluent to establish three different equivalent diameters of the V-cone flowmeter,then discussion the relationship between of them. The main content includes: Computational Fluid Dynamics simulation; builds up a reasonable experimental table; data collection and data analysis.First, using Fluent software to simulate the V-cone flowmeter of internal flow field, the main content includes: establish geometric model; select the turbulence model, this paper base on the RNG k ?εturbulence model. Through the simulation data identify the relationship between the V-cone geometry and the discharge coefficient.Second, according to the data nine form 65mm V-cone flowmeter is manufactured, and select the reasonable experimental apparatus to set up experimental table.Third, V-cone flowmeter on water experiment, processing to the simulate data and experiment data, and compared to the pressure loss of Orifice flowmeter.According to the result it is found that: V-cone flowmeter discharge coefficient is related with equivalent diameter ratioβ, Reynolds number and front cone angle; theβgreater the discharge coefficients are smaller; discharge coefficient increases with Reynolds number, and finally tends to a constant; with the increase of front cone angle, discharge coefficient decrease reversely; To ensure the effective flow area in the same circumstances, pressure loss smaller than orifice meter about 50%; the discharge coefficient error of simulation and experiment is less than 5.0%.