Topic
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.
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13 Mar 2003
TL;DR: In this article, the authors describe the development and use of a bottom mounted Argonaut-SW Doppler current meter that is capable of flow measurements in channels with water level from 0.2 m to 5 m. This measurement configuration provides an improved index velocity in complicated flow regimes, including highly variable water levels and stratified flow.
Abstract: Doppler velocity sensors have become increasingly common for flow monitoring in open channels. The most common configuration is a side-looking sensor that measures velocity at a single depth within the water column. Side mounted systems offer a number of advantages, including easy installation and maintenance. Their limitations include sites with highly variable water level or stratified flow; it can also be difficult to produce, a robust theoretical flow calculation based on velocity and water level data. This paper describes the development and use of a bottom mounted Argonaut-SW Doppler current meter that is capable of flow measurements in channels with water level from 0.2 m to 5 m. The new meter provides a vertically integrated velocity measurement. This measurement configuration provides an improved index velocity in complicated flow regimes, including highly variable water levels and stratified flow. It also provides improved performance for theoretical flow calculations, which are important in smaller channels where an index calibration may not be practical. The sensor is also intended for use in pipes with diameter from 0.3 to 5 m. This paper describes the sensor configuration, preliminary specifications and theoretical flow models used to calculate open channel discharge and flow in partially and completely full pipes. Flume tests demonstrate good agreement with independent measurements.
12 citations
Patent•
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TL;DR: A flow meter and an electrically operable valve assembly having integral flow meters provide detection of very low water flows, along with ease of installation and compact packaging for a water supply control system.
Abstract: A flow meter and electrically operable valve assembly having integral flow meters provide detection of very low water flows, along with ease of installation and compact packaging for a water supply control system. The flow detection is particularly useful for systems that control household water supplies to prevent flooding, but is also useful in other applications such as agricultural and industrial systems where low water flow rates must be determined. All of the controls and features are integrable within a compact package that occupies essentially the same volume and piping space as a conventional electrically operable valve.
12 citations
TL;DR: The NN model yields the flow rate of fluid across the flow-control valve, which acts as a flow meter, which is illustrated by real flow measurements of compressed air which is widely used in pneumatic systems.
12 citations
Patent•
24 Jul 2008
TL;DR: In this article, a method for determining one or more fluid flow parameters for a fluid flowing within a pipe is provided, where the fluid is a mixture of solid particles and gas.
Abstract: A method for determining one or more fluid flow parameters for a fluid flowing within a pipe is provided. The fluid is a mixture of solid particles and gas. The method includes the steps of: a) providing a meter operable to determine the velocity of the fluid flow through the pipe, which meter is substantially insensitive to the particulate/gas mass ratio of the fluid flow; b) determining the velocity of the fluid flow within the pipe using the meter; and c) determining a particulate/gas mass ratio using a density value for the gas within the flow and the determined fluid flow velocity.
12 citations
TL;DR: In this article, a double-wire sensor for specific mass flow rate (CTA) and temperature (CCT) measurement was applied to turbocharged engines to minimize the volume occupied by measuring devices in the control section, and procedures of their calibration and measurement were described.
12 citations