首页|Pipe roughness identification of water distribution networks: A Tensor method
Pipe roughness identification of water distribution networks: A Tensor method
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NSTL
Elsevier
The identification of pipe roughnesses in a water distribution network is formulated as a nonlinear system of algebraic equations which turns out to be demanding to solve under real-world circumstances. This paper proposes an enhanced technique to numerically solve this identification problem, extending the conventional Newton-Raphson approach with second-order derivatives in the determination of the search direction. Despite the requirement to solve a nonlinear equation to obtain a search direction, the application of the Hadamard/Schur product operator enables the resulting formulation to be represented compactly and thus facilitates the development of an efficient and more robust solving-technique. Algorithms on the basis of this more enhanced solving method are then compared to a customized Newton-Raphson approach in simulation examples. (C) 2021 Published by Elsevier Inc.
Tensor methodNumerical root findingRoughness calibrationWater distribution networksSYSTEMS
Kaltenbacher, Stefan、Steinberger, Martin、Horn, Martin
NSTL
Elsevier
