Study on dynamic characteristics of the bladder fluid pulsation attenuator based on dynamic mesh technology

Zhu, Qunwei; Zhang, Yongxiang; Zhu, Danchen

doi:10.1007/s12206-019-0215-3

Cited by 8 publications

(4 citation statements)

References 4 publications

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“…Smoothing and Remeshing methods were applied to simulate baffled motion considering that the mesh is created using the triangle method. The dynamic mesh technique has shown good reliability in modeling systems with moving parts [37][38][39]. Therefore, this technique can be relied upon for modeling moving parts in CFD.…”

Section: Cfd Model Development and Validationmentioning

confidence: 99%

The Hydrodynamics and Mixing Performance in a Moving Baffle Oscillatory Baffled Reactor through Computational Fluid Dynamics (CFD)

Mortazavi

Pakzad

2020

Processes

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Oscillatory baffled reactors (OBRs) have attracted much attention from researchers and industries alike due to their proven advantages in mixing, scale-up, and cost-effectiveness over conventional stirred tank reactors (STRs). This study quantitatively investigated how different mixing indices describe the mixing performance of a moving baffle OBR using computational fluid dynamics (CFD). In addition, the hydrodynamic behavior of the reactor was studied, considering parameters such as the Q-criterion, shear strain rate, and velocity vector. A modification of the Q-criterion showed advantages over the original Q-criterion in determination of the vortices’ locations. The dynamic mesh tool was utilized to simulate the moving baffles through ANSYS/Fluent. The mixing indices studied were the velocity ratio, turbulent length scale, turbulent time scale, mixing time, and axial dispersion coefficient. We found that the oscillation amplitude had the most significant impact on these indices. In contrast, the oscillatory Reynolds number did not necessarily describe the mixing intensity of a system. Of the tested indices, the axial dispersion coefficient showed advantages over the other indices for quantifying the mixing performance of a moving baffle OBR.

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Section: Cfd Model Development and Validationmentioning

confidence: 99%

The Hydrodynamics and Mixing Performance in a Moving Baffle Oscillatory Baffled Reactor through Computational Fluid Dynamics (CFD)

Mortazavi

Pakzad

2020

Processes

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“…When the constant flow sampler is operating, the reciprocating suction and exhaust action of the air pump causes a pulsation of air pressure. Severe pressure pulsation not only affects the service life of the equipment, but also causes inaccurate pressure detection of the pressure sensor, so the buffer that suppresses pressure pulsation plays an important role in maintaining flow stability [1] [2] . The main function of the throttle tube as a throttling device for the constant flow sampler is to control the flow rate of air through it.…”

Section: Introductionmentioning

confidence: 99%

Design and investigation of an airbag-free buffer throttle device

Qiang,

Li,

2024

Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024)

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“…As a result, much research effort has been devoted to the attenuation of pressure pulsations. [3][4][5] However, the pressure pulsations could be utilized in some cases. Several previous studies purposely used pressure pulsations to transmit information 6 or diagnose sensor dynamics.…”

Section: Introductionmentioning

confidence: 99%

Parametric modeling of flow characteristics in reciprocating pump-pipe interaction system

Chen

Zhang

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The flow characteristics in reciprocating pump-pipe system are inevitably subject to the interaction effects between pump and pipeline. In this paper, a parametric interaction model of flow characteristics in reciprocating pump-pipe system is presented by considering the coupling effect and leakage characteristics. The analytical solutions of the proposed interaction equations are deduced with the aid of the harmonic balance method. A testing platform of a simplex plunger reciprocating pump-pipe system is employed for validating the proposed model. The experimental tests under different operating conditions are used to compare the pressure pulsations and discharge flow rates from analytical solutions. It is observed that the analytical solutions are in good agreement with the test data and numerical results, and the prediction error is within 13%, thus validating the presented interaction model and analytical solutions. The interaction effects as well as the flow characteristics in reciprocating pump-pipe system are analyzed and discussed using the proposed model. It is found that the opening of flow control valve has remarkable influence on the relationship between flow rate and operating speed of reciprocating pump. The pressure pulsation within a pipe is closely related to and significantly affected by the plunger-to-cylinder clearance and the plunger stroke.

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Study on dynamic characteristics of the bladder fluid pulsation attenuator based on dynamic mesh technology

Cited by 8 publications

References 4 publications

The Hydrodynamics and Mixing Performance in a Moving Baffle Oscillatory Baffled Reactor through Computational Fluid Dynamics (CFD)

The Hydrodynamics and Mixing Performance in a Moving Baffle Oscillatory Baffled Reactor through Computational Fluid Dynamics (CFD)

Design and investigation of an airbag-free buffer throttle device

Parametric modeling of flow characteristics in reciprocating pump-pipe interaction system

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