Development and validation of a one-dimensional transient rotodynamic pump model at component scale

Matteo, Laura; Tauveron, Nicolas

doi:10.1088/1755-1315/240/3/032003

Cited by 2 publications

(6 citation statements)

References 9 publications

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“…The interpolation of the mean streamline is then done twice from 0 to L imp /2 and from L imp /2 to L imp . The same work has been done on the DERAP radial pump (see Matteo et al, 2018Matteo et al, , 2019b. This two steps interpolation gives satisfactory results, which are shown graphically (mean streamline R−H and R−θ plane projections) on Figs.…”

Section: Improvements On the Mean Streamline In The Impellermentioning

confidence: 66%

“…To improve thermal-hydraulic safety and design studies, the thermal-hydraulic simulation section of the French Alternative Energies and Atomic Energy Commission (CEA) has worked on a predictive 1-D pump model in the CATHARE code (see Refs. Matteo et al, 2018Matteo et al, , 2019aMatteo, 2019). A 1-D streamline approach in order to model a turbomachine is rare in the literature, as it lies between the classical input/output 0-D methods and the 2-D through flow and 3-D CFD ones.…”

Section: Introductionmentioning

confidence: 99%

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Transient compressible simulation of a high-speed radial compressor using the CATHARE system code

Cottarel,

Matteo,

Mauger

2023

European Conference on Turbomachinery Fluid Dynamics and Thermodynamics

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The French Alternative Energies and Atomic Energy Commission (CEA) works on Brayton cycles modeling and design for energy conversion systems of gas cooled reactors. To provide a solution for the pre-design of turbomachinery and the simulation of transient compressible flows, the thermal-hydraulic simulation section has worked on a onedimensional rotodynamic pump model. This is a predictive transient two-phase flow model which considers a mean streamline adopted by the fluid on each element of the machine (fixed and rotating parts). Originally dedicated to pumps, the method is applied here to the prediction of the performance of the Low-Speed Centrifugal Compressor from NASA. Direct application of the 1-D pump model on the compressor leads to a relative error to the experimental data of 2,2% on the pressure ratio and 7,0% on the isentropic efficiency at the nominal point, with correct overall trends. A development of an improved mean flow path is carried out, providing a base to qualify the model on other compressors.

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Section: Improvements On the Mean Streamline In The Impellermentioning

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Transient compressible simulation of a high-speed radial compressor using the CATHARE system code

Cottarel,

Matteo,

Mauger

2023

European Conference on Turbomachinery Fluid Dynamics and Thermodynamics

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“…The ability of the model to predict reliably the pump performance in steady operation has been proven in a previous work (Matteo et al [8,9]). The objective of the present work is to extend the work to transient operations.…”

mentioning

confidence: 85%

“…Several slip factor correlations have been implemented in the 1D pump model in order to make sensitivity studies and evaluate qualities and defaults of each (those of Stodola [32], Stanitz [33], Wiesner [34] and Qiu [35] as well as the one developed in the frame of this project). These correlations have been tested on four centrifugal pumps, two mixed flow pumps and one radial compressor (Matteo et al [8][9][10][11][12][13]). The correlations are described here after.…”

Section: Deviation and Loss Modelsmentioning

confidence: 99%

“…This traditional model is not predictive and cannot be used for Generation IV two-phase flow applications. For this reason, it was decided to implement a predictive transient, two-phase flow rotodynamic pump model in the CATHARE code and qualify results at component scale (pump) and system scale (reactor) with respect to available experimental data (Matteo et al [8][9][10][11][12][13]). The global strategy of the CATHARE-3 one-dimensional pump model development project and the first pump-scale verification and validation results were presented by Matteo et al [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Simulation of a Radial Pump Fast Startup and Analysis of the Loop Response Using a Transient 1D Mean Stream Line Based Model

Matteo

Mauger

Tauveron

2019

IJTPP

Self Cite

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A predictive transient two-phase flow rotodynamic pump model has been developed in the Code for Analysis of THermalhydraulics during an Accident of Reactor and safety Evaluation (CATHARE-3). Flow inside parts of the pump (suction, impeller, diffuser and volute) is computed according to a one-dimensional discretisation following a mean flow path. Transient governing equations of the model are solved using an implicit resolution method and integrated along the curvilinear abscissa of the element. This model has been previously qualified at the component scale by comparison to an existing experimental database. The present study aims at extending the validation at the system scale: a whole experimental test loop is modelled. The ability of the transient pump model to predict flow rate, head and torque as a function of time during a 1-s pump fast start-up is evaluated. The transient evolution of the pressure upstream and downstream from the centrifugal pump is well predicted by the simulation compared to the measurements. Local quantities such as pressure and velocity inside elements of the circuit are analysed. In the considered case, inertial effects of the global circuit are dominant when compared to pump inertial effects due to the high characteristic lengths of the pipes. The main perspective of this work consists in the simulation of similar pump transients, in cavitating conditions.

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Development and validation of a one-dimensional transient rotodynamic pump model at component scale

Cited by 2 publications

References 9 publications

Transient compressible simulation of a high-speed radial compressor using the CATHARE system code

Transient compressible simulation of a high-speed radial compressor using the CATHARE system code

Simulation of a Radial Pump Fast Startup and Analysis of the Loop Response Using a Transient 1D Mean Stream Line Based Model

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