Suscripción a Biblioteca: Guest
Journal of Flow Visualization and Image Processing

Publicado 4 números por año

ISSN Imprimir: 1065-3090

ISSN En Línea: 1940-4336

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.6 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.6 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00013 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.14 SJR: 0.201 SNIP: 0.313 CiteScore™:: 1.2 H-Index: 13

Indexed in

THERMAL AND FLUID CHARACTERISTICS OF SINGLE FIN HEAT SINK WITH A PIEZOELECTRIC COOLING FAN

Volumen 26, Edición 1, 2019, pp. 57-78
DOI: 10.1615/JFlowVisImageProc.2018028199
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SINOPSIS

This paper presents a comparative investigation of numerical flow simulations and the experimental data of a piezoelectric fan by particle image velocimetry. It investigates the fluid mechanics of a piezoelectric fan operating in its vibration frequency mode. The experimental results show that the optimal driving frequency for the piezoelectric fan is 60 Hz. At this frequency, the thin blade of the piezoelectric fan reaches its maximum vibration amplitude. The flow field visualization obtained in the experiments shows that the amplitude of the fan blade directly affects flow velocity. The vortex structures exhibit irregular motion once they separate from the blade tip. The phase measured PIV results are presented in terms of vorticity and show the formation of a horse shoe vortex. A maximum flow velocity of 1.7 m/s is obtained. It was also observed that the vibrating blade induces a pair of vortices, one clockwise and one counterclockwise. The blade vibration induces a pair of vortices around the blade tip. The blade inhale and propulsion air flow induces a jet-like motion at the tip during a cycle. Its fast blade motion achieves thermal cooling.

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