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Title: Computational Fluid Dynamics Modeling and Verification of a Submersible Pump-Turbine Runner: Preprint

Abstract

An innovative reversible pump-turbine runner with a 180-degree flow direction reversal has been designed and optimized using Computational Fluid Dynamics (CFD) modeling. The reversible pump-turbine configuration provides a cost-effective means of achieving adequate submergence below tailwater, thereby permitting higher-speed turbine and generator operation and reduced equipment size. Results from CFD modeling and analysis of the hydraulics and runner design are presented. The benchmarks for these parameters are the performance parameters of conventional pump-turbines with scroll-case turbine inlets. The model efficiencies were independently verified, and a sensitivity analysis of the results is presented. The results do not reveal a region of pump instability that is characteristic of pumps and pump-turbines with scroll cases. CFD modeling and analysis of the hydraulics and runner design are presented. The benchmarks for these parameters are the performance parameters of conventional pump-turbines with scroll-case turbine inlets. The model efficiencies were independently verified, and a sensitivity analysis of the results is presented. The results do not reveal a region of pump instability that is characteristic of pumps and pump-turbines with scroll cases.

Authors:
 [1]; ORCiD logo [1];  [2];  [2]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
  2. Obermeyer Hydro, Inc.
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind and Water Technologies Office (EE-4W)
OSTI Identifier:
1571894
Report Number(s):
NREL/CP-5000-74121
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at HydroVision International, 23-25 July 2019, Portland, Oregon
Country of Publication:
United States
Language:
English
Subject:
13 HYDRO ENERGY; computational fluid dynamics; hydrodynamics; modeling

Citation Formats

Abbas, Nikhar, Quon, Eliot W, Iavornic, Claudiu, and Obermeyer, Henry. Computational Fluid Dynamics Modeling and Verification of a Submersible Pump-Turbine Runner: Preprint. United States: N. p., 2019. Web.
Abbas, Nikhar, Quon, Eliot W, Iavornic, Claudiu, & Obermeyer, Henry. Computational Fluid Dynamics Modeling and Verification of a Submersible Pump-Turbine Runner: Preprint. United States.
Abbas, Nikhar, Quon, Eliot W, Iavornic, Claudiu, and Obermeyer, Henry. Mon . "Computational Fluid Dynamics Modeling and Verification of a Submersible Pump-Turbine Runner: Preprint". United States. https://www.osti.gov/servlets/purl/1571894.
@article{osti_1571894,
title = {Computational Fluid Dynamics Modeling and Verification of a Submersible Pump-Turbine Runner: Preprint},
author = {Abbas, Nikhar and Quon, Eliot W and Iavornic, Claudiu and Obermeyer, Henry},
abstractNote = {An innovative reversible pump-turbine runner with a 180-degree flow direction reversal has been designed and optimized using Computational Fluid Dynamics (CFD) modeling. The reversible pump-turbine configuration provides a cost-effective means of achieving adequate submergence below tailwater, thereby permitting higher-speed turbine and generator operation and reduced equipment size. Results from CFD modeling and analysis of the hydraulics and runner design are presented. The benchmarks for these parameters are the performance parameters of conventional pump-turbines with scroll-case turbine inlets. The model efficiencies were independently verified, and a sensitivity analysis of the results is presented. The results do not reveal a region of pump instability that is characteristic of pumps and pump-turbines with scroll cases. CFD modeling and analysis of the hydraulics and runner design are presented. The benchmarks for these parameters are the performance parameters of conventional pump-turbines with scroll-case turbine inlets. The model efficiencies were independently verified, and a sensitivity analysis of the results is presented. The results do not reveal a region of pump instability that is characteristic of pumps and pump-turbines with scroll cases.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {10}
}

Conference:
Other availability
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