A rotordynamic analysis of circumferentially-grooved pump seals based on a three-control-volume theory

Ha, Tae Woong; Lee, An Sung

doi:10.1007/bf03186418

Cited by 10 publications

(9 citation statements)

References 5 publications

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“…As shown in Fig. 16, results of present study was found to be smaller than those of Marquette and Childs [5], while greater than those of Ha and Lee [6], and was the closest to the experimental results obtained by Iwatsubo and Sheng [3], at the rotor speeds of 2000 rpm and 3000 rpm.…”

Section: Prediction Of Rotordynamic Coefficients Using Threedimensionsupporting

confidence: 81%

“…Fig. 7 presents a plot that compares the results of twodimensional CFD analysis using RNG k-ε turbulence model and the theoretical results based on the bulk-flow model obtained by Marquette and Childs [5] and Ha and Lee [6], and experimental results obtained by Iwatsubo and Sheng [3]. The prediction of leakage based on CFD in this study provided results that were within 5% of the experimental results, showing a great improvement from the previous theoretical methods.…”

Section: Flow Field Analysis Using Two-dimensional Cfdsupporting

confidence: 67%

“…16-18 present the K, k and C values in accordance with the rotor's angular velocity, comparing the results obtained via three-dimensional CFD analysis in this study to the theoretical results based on the bulk-flow model obtained by Marquette and Childs [5] and Ha and Lee [6], and the experimental results obtained by Iwatsubo and Sheng [3].…”

Section: Prediction Of Rotordynamic Coefficients Using Threedimensionmentioning

confidence: 97%

“…Ha and Lee [6] developed an analysis code based on the three-control-volume method of Marquette and Childs [5], improving predictions of the direct stiffness coefficient (K) and cross-coupled stiffness coefficient (k). Afterwards, Ha [7] used FLUENT (commercial CFD software) to determine the groove penetration angle α through two-dimensional analysis, which is important in the three-control-volume method, and applied it to the analysis code based on the bulk-flow model of Ha and Lee [6], improving predictions of leakage, k, and damping coefficient (C), and demonstrated the need for a more precise analysis of flow velocity field and rotordynamic coefficients of the groove seal, via CFD analysis.…”

Section: Introductionmentioning

confidence: 99%

“…Results of three-dimensional CFD analysis of the groove seal are compared with results of bulk-flow model analysis which are obtained by Marquette and Childs [5], Ha and Lee [6] and experimental results obtained by Iwatsubo and Sheng [3].…”

Section: Introductionmentioning

confidence: 99%

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Prediction of leakage and rotordynamic coefficients for the circumferential-groove-pump seal using CFD analysis

Kim

2016

J Mech Sci Technol

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The circumferential-groove seal is commonly used in various turbopumps to reduce leakage. The main goal of this paper is to develop the method of three-dimensional CFD analysis for determining leakage and rotordynamic coefficients of the circumferential-groovepump seal. A relative coordinate system was defined for steady-state simulation to calculate the velocity and pressure distributions of the seal clearance at each rotor whirl speed. Instead of setting the inlet and outlet pressures as the boundary conditions in the threedimensional CFD analysis, as it is more commonly done, we used the inlet velocity and outlet pressure obtained from a preliminary twodimensional CFD analysis. For prediction leakage, the presented analysis shows improvement from the bulk-flow model analysis. For the prediction of rotordynamic coefficients of K, k and C, the presented analysis provides results in closer agreement with the experimental values than those of the bulk-flow model analysis at several rotor speeds.

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Section: Prediction Of Rotordynamic Coefficients Using Threedimensionsupporting

confidence: 81%

Section: Flow Field Analysis Using Two-dimensional Cfdsupporting

confidence: 67%

Section: Prediction Of Rotordynamic Coefficients Using Threedimensionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Prediction of leakage and rotordynamic coefficients for the circumferential-groove-pump seal using CFD analysis

Kim

2016

J Mech Sci Technol

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An intelligent CAD system for development of controllers of active magnetic bearings

Kim

2001

KSME International Journal

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Optimized design of thermal insulation and fluid drag reduction for circumferentially grooved annular seal with MMA and perturbation methods

Cao

Wang

2020

Struct Multidisc Optim

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A rotordynamic analysis of circumferentially-grooved pump seals based on a three-control-volume theory

Cited by 10 publications

References 5 publications

Prediction of leakage and rotordynamic coefficients for the circumferential-groove-pump seal using CFD analysis

Prediction of leakage and rotordynamic coefficients for the circumferential-groove-pump seal using CFD analysis

An intelligent CAD system for development of controllers of active magnetic bearings

Optimized design of thermal insulation and fluid drag reduction for circumferentially grooved annular seal with MMA and perturbation methods

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