Schlieren optical technique is used to collect multidirectional experimental data, proving to be a practical tool for quantitative study of three-dimensional asymmetric thermal fields occurring in fluids transparent to visible radiation. The basic principles of schlieren optics are briefly discussed. A discrete-elements iterative algorithm of reconstruction based on tomographic methods developed for computer-aided data processing is presented. A numerical procedure for the generation of simulated experimental schlieren data is presented and employed to verify the consistency of the reconstruction method. According to the obtained results, the algorithm proves to be effective and accurate.
Reconstruction of three-dimensional thermal fields by tomographic Schlieren methods / Cianfrini, Claudio; Corcione, Massimo; Fontana, Donato Maria. - STAMPA. - 4:(1998), pp. 89-96. (Intervento presentato al convegno 11th International Heat Transfer Conference tenutosi a KYONGJU, SOUTH KOREA nel AUG 23-28, 1998).
Reconstruction of three-dimensional thermal fields by tomographic Schlieren methods
CIANFRINI, Claudio;CORCIONE, Massimo;FONTANA, Donato Maria
1998
Abstract
Schlieren optical technique is used to collect multidirectional experimental data, proving to be a practical tool for quantitative study of three-dimensional asymmetric thermal fields occurring in fluids transparent to visible radiation. The basic principles of schlieren optics are briefly discussed. A discrete-elements iterative algorithm of reconstruction based on tomographic methods developed for computer-aided data processing is presented. A numerical procedure for the generation of simulated experimental schlieren data is presented and employed to verify the consistency of the reconstruction method. According to the obtained results, the algorithm proves to be effective and accurate.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
