Calculation of Sensitivity to Parameters in Single-phase Natural Circulation Flows using ADIFOR
Authors: Carlos Ferreri J.1; Ambrosini W.2
Source: International Journal of Computational Fluid Dynamics, Volume 16, Number 4, 1 January 2002 , pp. 277-281(5)
Publisher: Taylor and Francis Ltd
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Abstract:
An automatic technique to get the sensitivity of a margin to instability in natural circulation flows with respect to physical and discretization parameters has been developed. It is based on the use of a tool for the automatic differentiation of FORTRAN codes. ADIFOR was the tool adopted to get the derivatives of model variables with respect to model parameters. In this paper, we present an alternative, simpler, procedure to the authors' previous analysis. It is based in obtaining the derivatives of the Jacobeans matrices automatically. This procedure gives results coincident with the previous ones, allowing for obtaining the desired sensitivities in a somewhat complex problem. It is worth pointing out that the procedure is general enough and may also be applied to other problems.Keywords: Natural circulation; Sensitivity analysis; Automatic differentiation; ADIFOR
Document Type: Research article
DOI: 10.1080/1061856021000025157
Affiliations: 1: Autoridad Regulatoria Nuclear, Av. del Libertador 8250, 1429 Buenos Aires, and CONICET Argentina 2: Dip. Ingeg. Mec., Nuc. e della Produzione, Universitá di Pisa, Via Diotisalvi 2, 56126 Pisa, Italia
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