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Multipipe systems consist of complex configurations of interconnected pipes designed to transport fluids efficiently across intricate networks. They are essential in engineering applications requiring precise control over flow distribution, pressure, and head loss. They are categorized into series, parallel, loop, and network configurations, each distinguished by unique flow characteristics and applications.
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Laminar flow represents a smooth, orderly fluid motion where particles move along parallel paths, resulting in minimal mixing between layers. Streamlined particle paths characterize this flow regime and occur under conditions where viscous forces dominate over inertial forces. The distinction between laminar, transitional, and turbulent flow is primarily determined by the Reynolds number, a dimensionless quantity calculated as:
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A spray tank system is engineered to uniformly distribute a pest-control liquid across plants by using a pressurized mechanism. The tank, pressurized to 150 kPa, holds the pesticide at a height of 0.80 meters. Liquid flows from the tank through a 1.9 meter pipe with a diameter of 0.015 meters, angled at 0.698 radians, ultimately reaching a 0.007 meter nozzle that sprays the pesticide. Accurate calculation of the system's flow rate is crucial to ensure uniform application, and this is achieved...
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Single Pipe Systems01:24

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In pipe flow analysis, problems are typically categorized into three types — Type I, Type II, and Type III — based on the known parameters and the desired outcome. Each type of problem addresses specific engineering requirements using fluid properties, pipe characteristics, and operational conditions.
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When fluid enters a pipe, it first passes through the entrance region, where the velocity profile adjusts due to viscous effects. In this region, a boundary layer forms along the pipe walls and grows until it fully occupies the pipe's cross-section. Once the boundary layer merges, the flow becomes fully developed, with a steady velocity profile that remains consistent along the pipe's length.
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Ultrasound Velocity Measurement in a Liquid Metal Electrode
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Ultrasonic Power and Data Transfer through Multiple Curved Layers Applied to Pipe Instrumentation.

Victor L Takahashi1, Alan C Kubrusly2, Arthur M B Braga3

  • 1Department of Mechanical Engineering, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro 22451-900, Brazil. takahashi@puc-rio.br.

Sensors (Basel, Switzerland)
|September 25, 2019
PubMed
Summary
This summary is machine-generated.

This study demonstrates successful ultrasonic power and data transfer through multilayered curved walls, enabling remote sensor operation in challenging environments. The method achieved a 1200 bps data rate with efficient power delivery, validated by bit error rate analysis.

Keywords:
multiple layers acoustic transmissionpassive sensor communicationpower and data transmissionultrasonic communication

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Area of Science:

  • Acoustics
  • Sensor Technology
  • Wireless Power Transfer

Background:

  • Traditional methods for powering and monitoring sensors behind barriers are often complex and costly.
  • Multilayered curved structures present significant challenges for signal propagation.
  • Need for robust solutions for in-situ monitoring in industrial and medical applications.

Purpose of the Study:

  • To investigate the feasibility of simultaneous ultrasonic power and data transfer through multilayered curved walls.
  • To develop and validate a numerical and experimental model for acoustic channel analysis.
  • To assess the performance of the developed system for powering and interrogating remote sensors.

Main Methods:

  • Utilized a numerical and experimental analysis approach.
  • Employed an acoustic channel consisting of two concentric water-filled pipes.
  • Performed analysis in both frequency and time domains.
  • Implemented an amplitude modulated scheme with Manchester coding for data transmission.

Main Results:

  • Achieved simultaneous power and data transfer through the multilayered curved channel.
  • Successfully powered and interrogated a remote temperature and pressure sensor.
  • Measured a power insertion loss of 10.72 dB.
  • Attained a data transmission rate of 1200 bps.
  • Demonstrated improved efficiency with Manchester coding, showing a decrease in bit error rate (BER) with varying signal-to-noise ratio (SNR).

Conclusions:

  • Ultrasonic power and data transfer is a viable solution for applications involving sensors behind multilayered curved walls.
  • The developed system offers efficient simultaneous power and data transmission with a practical data rate.
  • Manchester coding enhances data transmission reliability in noisy acoustic channels.