Turbulent flow of quadrangle mode in interdisk midplane between two shrouded co-rotating disks

Huang, Rong Fung; Hsieh, Min Kai

doi:10.1016/j.expthermflusci.2011.07.013

Cited by 10 publications

(3 citation statements)

References 20 publications

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“…[3] Rong Fung Huang et al using PIV testing methods studied the structure, time-averaged velocity distribution and variation laws of turbulence characteristics of the flow field between two relatively rotating discs. [4] 2. Calculation model: -turbulent flow diffusion term, -pressure strain term, -dissipative term, system rotation production term [5] Structure parameters of flow field are set as shown in Table 1.…”

Section: Introductionmentioning

confidence: 99%

Simulation Research on Micro-Cavity Flow Field Characteristics of Liquid Floating Rotor Gyro

Shi

Tang

Wang

2013

KEM

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The liquid floating rotor gyro is a gyroscope using electrostatic or electromagnetic forces to levitate rotor, and filling rotor-stator cavities with liquid in order to improve stability of motion. Under influence of the relative surface roughness, rotor velocity, dimension of flow field and fluid nature, flow characteristics of cavity flow field vary under different boundary conditions and geometrical conditions. This paper adopts three-dimensional model and periodic boundary conditions to conduct numerical modeling on cavity flow field. Its results show that, with velocity rising, distribution of flow field speed and pressure manifests partial fluctuations in turbulent-flow-intensive area; resistance torque amid rotor rotation is nonlinearly correlated with velocity, whose rules can be obtained through high-order curve fitting.

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Section: Introductionmentioning

confidence: 99%

Simulation Research on Micro-Cavity Flow Field Characteristics of Liquid Floating Rotor Gyro

Shi

Tang

Wang

2013

KEM

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“…[8][9][10] The reasons for the complexity of the rotational flow field are that irrespective of the periodic vortex flow, the Ekman boundary layer or other fluid mechanics characteristics are closely related to the experimental design parameters such as the scale of the structure. [1][2][3][4]11,12 Any change in the experimental design correspondingly changes the flow characteristics. Rong Fung Huang 11 and Shen-Chun Wu et al 12 researched the structure and the flow pattern characteristics of a rotational flow field with a gap larger than 1mm, and discovered that there were a transition area and vortex flow area with uncertain range, and secondary flow phenomena of different types in the range from the center of the rotating surface to the edge.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4]11,12 Any change in the experimental design correspondingly changes the flow characteristics. Rong Fung Huang 11 and Shen-Chun Wu et al 12 researched the structure and the flow pattern characteristics of a rotational flow field with a gap larger than 1mm, and discovered that there were a transition area and vortex flow area with uncertain range, and secondary flow phenomena of different types in the range from the center of the rotating surface to the edge. This paper focuses on the special structure of a liquid-floated rotor gyroscope, that is, to fill in a layer of 100-300µm thin liquid flow film between the rotating surface and the static horizontal plane of the cavity.The main characteristics of the flow field are the non-equivalence of the three-dimensional size with a large horizontal extent, tiny gap and fast flow velocity.As macroscopic non-contact testing methods are not applicable to this flow field, the Micro-PIV testing technique provides a method to solve the problem.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the application of micro-PIV on the flow characteristics detection of micro-gap rotational flow field

et al. 2014

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For a micro-gap rotational flow field with a large horizontal extent, tiny gap and fast flow velocity, the two-dimensional images shot by the micro-scale Particle ImageVelocimetry(Micro-PIV) technique are not sufficient for the study of local or whole flow characteristics. In this paper, by establishing a test bench of a rotational flow field with the functions of driving, positioning, adjustment and sensing, all the local states of the micro-gap rotational flow field can be obtained by horizontally moving the rotating axis to observe point by point. While measuring some local flow fields, two-dimensional pictures are taken by adjusting the focusing height of the objective lens, and then superposed and interpolated according to their shooting order to obtain a quasi-three-dimensional distribution image of the local flow fields, thus obtaining the flow condition of the vertical section of the flow field. The position of the focusing plane and mutual distance are adjusted to realize the measurement of wall shear force in the flow field, providing a feasible reference method for detecting the rheological property of the gap flow field and the effect of surface drag reduction.

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Two-dimensional topology analysis on the complex flow driven by corotating disks mounted in a non-axisymmetric enclosure

Sakamoto,

Shirai

2023

Microsyst Technol

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Turbulent flow of quadrangle mode in interdisk midplane between two shrouded co-rotating disks

Cited by 10 publications

References 20 publications

Simulation Research on Micro-Cavity Flow Field Characteristics of Liquid Floating Rotor Gyro

Simulation Research on Micro-Cavity Flow Field Characteristics of Liquid Floating Rotor Gyro

Experimental study of the application of micro-PIV on the flow characteristics detection of micro-gap rotational flow field

Two-dimensional topology analysis on the complex flow driven by corotating disks mounted in a non-axisymmetric enclosure

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