Thermal mass flow meter

About: Thermal mass flow meter is a research topic. Over the lifetime, 1759 publications have been published within this topic receiving 21878 citations.

Cfd simulation on different geometries of venturimeter

Abstract: This paper describe an analytical approach for comparison of four different models to describe the velocity, pressure, turbulence and mass flow rate taken place in the venturimeter and graph are plotted. Venturimeter are most commonly used for flow meters for measuring volumetric or mass flow rate and velocity of fluid flowing through the venturimeter. Hence are also know as variable head meters. Variable head meters work on the principle that a variation of the flow rate through a constriction with a constant cross-sectional area causes a pressure drop suffered by the fluid as it flows through the constriction. The pressure drop is related to the flow rate, and hence variations of the pressure drop can be used to measure variations in the flow rate. Fluent soft ware was used to plot the characteristics of the flow of fluid through the flow meter and gambit software was used to design the 2D model. Two phase computational fluid dynamic calculation, using K-Epsilon model were employed. The numerical results were validated against experimental data from the literature and were found to be in good agreement. The pressure recovery is better in the venturi meter.

Thermal, flow measuring apparatus and method for determining and/or monitoring flow of a medium

Abstract: A thermal, flow measuring apparatus for determining and/or monitoring flow of a measured medium through a measuring tube, comprising at least two temperature sensors, wherein a first temperature sensor is heatable, and a second temperature sensor serves to provide the temperature of the measured medium. According to the invention, the thermal, flow measuring apparatus has at least one measuring transducer for ascertaining the following properties of the medium: thermal conductivity, heat capacity, density and dynamic viscosity or thermal conductivity, thermal diffusivity, density and dynamic viscosity.

Gas flow sensor with flow diagnostic

Abstract: A flow signal is obtained from a CMOS anemometer (2) comprising at least one temperature sensor (5,6) and evaluation circuitry (3). Fluctuations about an average flow signal are measured. Pulsations in the flow of fluid are determined from these fluctuations and indicated. An independent claim is included for a flow measuring apparatus.

Three-phase flow regulating means for oil, gas and water, three-phase flow measuring apparatus for oil, gas and water and measuring method thereof

Abstract: The invention relates to an oil-gas-water multi-phase flow adjusting apparatus, which mainly comprises an inlet accelerating pipe section, a vortex flow guide spiral pipe, a gas circuit exit connection pipe section, a liquid receiving cone, a mixed liquid relief exit connection pipe section and a sampler exit connection pipe section, and which has the function for changing at intervals the flow pattern, the flow state and the components of the oil-gas-water multi-phase flow. The invention also relates to an oil-gas-water multi-phase flow rate measuring apparatus and its measuring method. The measuring apparatus comprises a blind three-way mixing means, a pressure differential type flow measuring device, a single-γ phase volume fraction meter, a dual-γ phase volume fraction meter, an oil-gas-water multi-phase flow adjusting apparatus and a computing system. The measuring method is as follows: the single-γ phase volume fraction meter and the dual-γ phase volume fraction meter measure the gas content GVF and the water content WC respectively; the pressure differential type flow measuring device measures the differential pressure ΔP of the total flow rate; the computing unit computes the oil flow rate Qo, the gas flow rate Qg and the water flow rate Qw.