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Related Concept Videos

Measurement of Fluid Pressure01:16

Measurement of Fluid Pressure

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Fluid pressure is commonly measured using devices called manometers, which rely on liquid columns to indicate pressure differences. The height of a liquid column in a manometer reflects the pressure exerted by the fluid, providing a simple yet effective means of measurement. Different types of manometers serve specific purposes based on their configurations and the type of fluids involved.
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There are many examples of pressure in fluids in everyday life, such as in relation to blood (high or low blood pressure) and in relation to weather (high- and low-pressure weather systems). A given force can have a significantly different effect, depending on the area over which the force is exerted. For instance, a force applied to an area of 1 mm2 has a pressure that is 100 times greater than the same force applied to an area of 1 cm2. That's why a sharp needle is able to poke through...
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Calorimetry is a technique used to measure the amount of heat involved in a chemical or physical process or to measure the heat transferred to or from a substance. The heat is exchanged with a calibrated and insulated device called the calorimeter. Calorimetry experiments are based on the assumption that there is no heat exchange between the insulated calorimeter and the external environment. The well-insulated calorimeters prevent the transfer of heat between the calorimeter and its external...
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When a curved plate of constant width is submerged in a liquid, the pressure acting normal to the plate varies continuously both in magnitude and direction. Calculating the magnitude and location of the resultant force at a point is often challenging for such cases. One of the methods to determine the resultant force and its location involves separately calculating the horizontal and vertical components of the resultant force. This complex calculation can be simplified by representing the...
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Uncoupling Coriolis Force and Rotating Buoyancy Effects on Full-Field Heat Transfer Properties of a Rotating Channel
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A simple microfluidic Coriolis effect flowmeter for operation at high pressure and high temperature.

Christopher Harrison1, Jacques Jundt1

  • 1Schlumberger-Doll Research, 1 Hampshire Street, Cambridge, Massachusetts 02139, USA.

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A novel microfluidic Coriolis effect flowmeter offers high sensitivity for mass flow measurement. This device, operating under harsh conditions, also enables fluid density calculation.

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Area of Science:

  • Microfluidics
  • Sensor Technology
  • Physical Chemistry

Background:

  • Traditional flowmeters face limitations in harsh environments.
  • Microfluidic devices offer miniaturization and enhanced control.
  • Coriolis effect principles are utilized for precise flow measurement.

Purpose of the Study:

  • To develop a microfluidic Coriolis effect flowmeter.
  • To enable operation at elevated temperatures and pressures.
  • To demonstrate fluid density calculation capabilities.

Main Methods:

  • Assembly of a microfluidic Coriolis effect flowmeter.
  • Utilizing off-the-shelf optical components for motion detection.
  • Benchmarking sensor performance with mass flow rates from 0.05 to 2.0 g/min.

Main Results:

  • Achieved flow rate sensitivity greater than 2° phase shift per 1 g/min.
  • Demonstrated operation at elevated temperature and pressure.
  • Successfully calculated fluid density from resonating element frequency.

Conclusions:

  • The developed microfluidic Coriolis flowmeter is robust and sensitive.
  • The sensor is suitable for demanding industrial and research applications.
  • The device provides dual functionality for flow and density measurements.