Pump Suction Shape Optimization Using A Parallel Stochastic Radial Basis Function Method.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28645413%3A_____%2F16%3AN0000007" target="_blank" >RIV/28645413:_____/16:N0000007 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.2495/CMEM-V5-N5-667-677" target="_blank" >http://dx.doi.org/10.2495/CMEM-V5-N5-667-677</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2495/CMEM-V5-N5-667-677" target="_blank" >10.2495/CMEM-V5-N5-667-677</a>

Result language

angličtina

Original language name

Pump Suction Shape Optimization Using A Parallel Stochastic Radial Basis Function Method.

Original language description

This paper deals with a shape optimization of pump suction, with the objective of improving the pump performance. A combination of ANSYS CFX software tools and a surrogate-based, so-called multistart local metric stochastic RBF (MLMSRBF) method for the global optimization of “expensive black-box functions” is employed. The shape of the suction is driven by 18 geometric parameters, and the cost functional is based on the CFD results. The practical aspects of assembling and evaluating a parametric CFD model, including mesh independence study, are shown. After initial design of experiment evaluation, a response surface model is created and used for generating new sample points for the expensive CFD evaluation. Then, the whole process is repeated as long as necessary. A parallel version of the method is used, with necessary modifications for dealing with CFD-specific problems, such as failed designs and uncertainty of computational times. Both steady-state and transient models are used for the optimization, each with a different objective function. The resulting designs are then compared with the original geometry, using a complete model of the pump and fully-transient simulation. Both hydraulic characteristics and multiphase cavitational simulations are considered for the comparison. At the end, the results and challenges of using these methods for CFD-driven shape optimization are discussed.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BK - Liquid mechanics

OECD FORD branch

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Project

<a href="/en/project/TE02000232" target="_blank" >TE02000232: Special rotary machine engineering centre</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal of Computational Methods and Experimental Measurements

ISSN

2046-0546

e-ISSN

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Volume of the periodical

5

Issue of the periodical within the volume

5

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

667 - 677

UT code for WoS article

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EID of the result in the Scopus database

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