International Journal of Numerical Methods for Heat & Fluid Flow: Volume 27 Issue 3

Guest editorial

Andrzej J. Nowak, Ireneusz Szczygieł

Preface

Andrzej J. Nowak, Ireneusz Szczygieł

Testing extremely small samples using the flash diffusivity method

Robert McMasters, Zachary J. Harth, Ryan P. Taylor, George M. Brooke

The purpose of the present research is to examine very small-sized samples of approximately 2-mm diameters. For samples of this size, the holder must make contact with the entire…

An alternative approach to thermal analysis using inverse problems in aluminum alloy welding

Elisan dos Santos Magalhaes, Cristiano Pedro da Silva, Ana Lúcia Fernandes Lima e Silva, Sandro Metrevelle Marcondes Lima e Silva

The purpose of this article is the determination of the temperature fields in a weld region has always been an obstacle to the improvement of welding processes. As an alternative…

Estimation of the local heat transfer coefficient in coiled tubes: Comparison between Tikhonov regularization method and Gaussian filtering technique

Fabio Bozzoli, Luca Cattani, Sara Rainieri, Fermín S.V. Bazán, Leonardo S. Borges

Most of the passive techniques for enhancing heat transfer inside pipes (e.g. rough surfaces, swirl-flow devices and coiled tubes) give origin to an irregular distribution of the…

Multicriteria identification of parameters in microscale heat transfer

Waclaw Kus, Jolanta Dziatkiewicz

The purpose of this paper is to present the multicriteria identification method used for solving the microscale heat transfer problem. The thin film exposed to ultrashort laser…

Identification of radiative heat transfer parameters in multilayer thermal insulation of spacecraft

Aleksey V. Nenarokomov, Leonid A. Dombrovsky, Irina V. Krainova, Oleg M. Alifanov, Sergey A. Budnik

The purpose of this study is to optimize multilayer vacuum thermal insulation (MLI) of modern high-weight spacecrafts. An adequate mathematical simulation of heat transfer in the…

State estimation in bioheat transfer: a comparison of particle filter algorithms

Bernard Lamien, Leonardo A.B. Varon, Helcio R.B. Orlande, Guillermo E. Elicabe

The purpose of this paper is to focus on applications related to the hyperthermia treatment of cancer, with heating imposed either by a laser in the near-infrared range or by…

Estimation of the non-linear diffusion coefficient with Marcov Chain Monte Carlo method based on the integral information

Zbigniew Bulinski, Helcio R.B. Orlande

This paper aims to present development and application of the Bayesian inverse approach for retrieving parameters of non-linear diffusion coefficient based on the integral…

RBF-trained POD-accelerated CFD analysis of wind loads on PV systems

Victor Huayamave, Andres Ceballos, Carolina Barriento, Hubert Seigneur, Stephen Barkaszi, Eduardo Divo, Alain Kassab

Wind loading calculations are currently performed according to the ASCE 7 standard. Values in this standard were estimated from simplified models that do not necessarily take into…

Identification of the cancer ablation parameters during RF hyperthermia using gradient, evolutionary and hybrid algorithms

Marek Paruch

The purpose of this study is to show that the methods of the numerical simulation can be a very effective tool for a proper choice of control parameters of artificial…

Inverse problem solution for a laser flash studies of a thin layer coatings

Wit Stryczniewicz, Janusz Zmywaczyk, Andrzej Jaroslaw Panas

The paper aims to discuss the inverse heat conduction methodology in solution of a certain parameter identification problem. The problem itself concerns determination of the…

Inverse problems in identification and modeling of thermal processes: Russian contributions

Oleg M. Alifanov

The main purpose of this study, reflecting mainly the content of the authors’ plenary lecture, is to make a brief overview of several approaches developed by the author and his…

Retrieving thermal conductivity of the solid sample using reduced order model inverse approach

Wojciech Piotr Adamczyk, Ziemowit Ostrowski

Prompted by the reliability and robustness of the previously proposed method of non-destructive measurement of thermal conductivity (TC) for anisotropic materials, the enhanced…

Monitoring of thermal stresses in pressure components using inverse heat conduction methods

Jan Taler, Bohdan Weglowski, Marcin Pilarczyk

The purpose of this paper is to present a method for monitoring transient thermal stresses. This paper also presents the analysis of thermal stresses of boiler pressure element…