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Xiaoqian Chen - One of the best experts on this subject based on the ideXlab platform.

  • fourier bessel theory on Flow acoustics in inviscid shear Pipeline Fluid Flow
    Communications in Nonlinear Science and Numerical Simulation, 2013
    Co-Authors: Yong Chen, Yiyong Huang, Xiaoqian Chen
    Abstract:

    Abstract Flow acoustics in Pipeline is of considerable interest in both industrial application and scientific research. While well-known analytical solutions exist for stationary and uniform mean Flow, only numerical solutions exist for shear mean Flow. Based on potential theory, a general mathematical formulation of Flow acoustics in inviscid Fluid with shear mean Flow is deduced, resulting in a set of two second-order differential equations. According to Fourier–Bessel theory which is orthogonal and complete in Lebesgue Space, a solution is proposed to transform the differential equations to linear homogeneous algebraic equations. Consequently, the axial wave number is numerically calculated due to the existence condition of non-trivial solution to homogeneous linear algebraic equations, leading to the vanishment of the corresponding determinant. Based on the proposed method, wave propagation in laminar and turbulent Flow is numerically analyzed.

Yong Chen - One of the best experts on this subject based on the ideXlab platform.

  • fourier bessel theory on Flow acoustics in inviscid shear Pipeline Fluid Flow
    Communications in Nonlinear Science and Numerical Simulation, 2013
    Co-Authors: Yong Chen, Yiyong Huang, Xiaoqian Chen
    Abstract:

    Abstract Flow acoustics in Pipeline is of considerable interest in both industrial application and scientific research. While well-known analytical solutions exist for stationary and uniform mean Flow, only numerical solutions exist for shear mean Flow. Based on potential theory, a general mathematical formulation of Flow acoustics in inviscid Fluid with shear mean Flow is deduced, resulting in a set of two second-order differential equations. According to Fourier–Bessel theory which is orthogonal and complete in Lebesgue Space, a solution is proposed to transform the differential equations to linear homogeneous algebraic equations. Consequently, the axial wave number is numerically calculated due to the existence condition of non-trivial solution to homogeneous linear algebraic equations, leading to the vanishment of the corresponding determinant. Based on the proposed method, wave propagation in laminar and turbulent Flow is numerically analyzed.

Yiyong Huang - One of the best experts on this subject based on the ideXlab platform.

  • fourier bessel theory on Flow acoustics in inviscid shear Pipeline Fluid Flow
    Communications in Nonlinear Science and Numerical Simulation, 2013
    Co-Authors: Yong Chen, Yiyong Huang, Xiaoqian Chen
    Abstract:

    Abstract Flow acoustics in Pipeline is of considerable interest in both industrial application and scientific research. While well-known analytical solutions exist for stationary and uniform mean Flow, only numerical solutions exist for shear mean Flow. Based on potential theory, a general mathematical formulation of Flow acoustics in inviscid Fluid with shear mean Flow is deduced, resulting in a set of two second-order differential equations. According to Fourier–Bessel theory which is orthogonal and complete in Lebesgue Space, a solution is proposed to transform the differential equations to linear homogeneous algebraic equations. Consequently, the axial wave number is numerically calculated due to the existence condition of non-trivial solution to homogeneous linear algebraic equations, leading to the vanishment of the corresponding determinant. Based on the proposed method, wave propagation in laminar and turbulent Flow is numerically analyzed.

Liang, Loh Chun - One of the best experts on this subject based on the ideXlab platform.

  • The Study of Drag Reduction Ability and Mechanical Degradation of Biopolymer in Water Injection System
    IRC, 2015
    Co-Authors: Liang, Loh Chun
    Abstract:

    Drag is characterized as a force that acting opposite the relative motion of an object through a Fluid which lead to frictional pressure loss in Pipeline Fluid Flow and Drag Reducing Agent (DRA) is a common solution of this problem. This research concerns only the application of water injection system due to the environmental concerns of the injection of the commercialized synthetic DRA into the formation because of its chemical contents. Thus, the CMC is synthesized with the objective to serve as a feasible alternative of synthetic DRAs. This study describes the synthesizing of biopolymer, Carboxymethylcellulose (CMC), study the effectiveness of the synthesized CMC in drag reduction at different concentration and different Flow rate, and observe the mechanical degradation of the synthesized CMC that causes the drop in its drag reduction performance. The residue of coconut fibre after the extraction of coconut milk or so called Coconut Residue (CR) is selected as the candidate for CMC extraction

Mađerić Toni - One of the best experts on this subject based on the ideXlab platform.

  • Pipeline Fluid Flow Measurement
    University of Rijeka. Faculty of Engineering. Department of fluid mechanics and computational engineering. Section of Fluid Mechanics and Hydraulic En, 2021
    Co-Authors: Mađerić Toni
    Abstract:

    U zadatku za završni rad na temu mjerenje protoka Fluida u cjevovodu su odrađena mjerenja u labaratoriju na Građevinskom fakultetu u Rijeci. Mjerenje se odvijalo u zatvorenom krugu koji uključuje: bazen s vodom, cijevi, pumpu s turbinskim mjeračem protoka i ultrazvučni mjerač protoka kao kontrolni mjerni uređaj. Tijekom mjerenja su zabilježene vrijednosti pet različitih protoka i brzina. Nakon dobivenih vrijednosti, podatci su obrađeni u microsoft excelu. Provedbom regresijske analize podataka dobivena su odstupanja prilikom mjerenja. Mjerilo se s dvije različite metode sa ultrazvučnim protokomjerom, a to su V metoda i W metoda. U radu je izložena provedena analiza kao i ostali načini i metode za mjerenje protoka.In the task for the final work on the topic of measuring the Flow of Fluid in the Pipeline, measurements were performed in the laboratory at the Faculty of Civil Engineering in Rijeka. The measurement took place in a closed circuit that includes: a water pool, pipes, a pump with a turbine Flow meter and an ultrasonic Flow meter as a control measuring device. During the measurement, values of five different Flows and velocities were recorded. After the obtained values, the data were processed in microsoft excel. By performing regression analysis of the data, deviations during the measurement were obtained. It was measured with two different methods with an ultrasonic Flow meter, namely the V method and the W method. The work presents the performed analysis as well as other ways and methods for Flow measurement