Vertical Forced Vibration Effect on Natural Convective Performance of Longitudinal Fin Heat Sinks

This paper reports an experimental study for the effect of forced vertical vibrations on natural convection heat transfer, by the use of longitudinally finned plate made from Aluminum with dimensions (100, 300 and 3 mm). The sample of test was heated under the condition of a constant heat flux which...

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Main Author: Abdalhamid Rafea Sarhan
Format: Article
Language:English
Published: Tikrit University 2013-06-01
Series:Tikrit Journal of Engineering Sciences
Subjects:
Online Access:https://tj-es.com/ojs/index.php/tjes/article/view/400
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author Abdalhamid Rafea Sarhan
author_facet Abdalhamid Rafea Sarhan
author_sort Abdalhamid Rafea Sarhan
collection DOAJ
description This paper reports an experimental study for the effect of forced vertical vibrations on natural convection heat transfer, by the use of longitudinally finned plate made from Aluminum with dimensions (100, 300 and 3 mm). The sample of test was heated under the condition of a constant heat flux which is generated by applying an alternating voltage on a fixed resistor mounted on the underside of the sample test which was located horizontally or inclined in multiple angles at a range of (30°,60oand 90°). An experimental set-up was constructed and calibrated, 16 sets of fin-arrays were tested in atmosphere. Fin length, fin thicknesses and fin height were fixed at 300 mm, 3 mm and 13 mm respectively. The base-to-ambient temperature difference was also varied independently and systematically with the power supply to the heater ranging from 250 W/m2 to 1500W/m2. The frequency was varied at (0, 2, 6, 10 and 16 Hz) and the amplitude wain the range of (1.63-7.16 mm).The relation between the heat transfer coefficient and the amplitude of vibration is directly proportional with the inclination angle from (0o, 30o, 60o).Results show that the heat transfer coefficients of the heated plate in (30o) angle are about (19.27%) greater than those for the (60o) and exceeds that of the (90o) by (31.4%).
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spelling doaj.art-9d78f201adb34b0f9a49dea4d4448dd82023-07-12T12:54:43ZengTikrit UniversityTikrit Journal of Engineering Sciences1813-162X2312-75892013-06-0120210.25130/tjes.20.2.06Vertical Forced Vibration Effect on Natural Convective Performance of Longitudinal Fin Heat SinksAbdalhamid Rafea Sarhan0Mechanical Eng. Dept., University of Anbar, IraqThis paper reports an experimental study for the effect of forced vertical vibrations on natural convection heat transfer, by the use of longitudinally finned plate made from Aluminum with dimensions (100, 300 and 3 mm). The sample of test was heated under the condition of a constant heat flux which is generated by applying an alternating voltage on a fixed resistor mounted on the underside of the sample test which was located horizontally or inclined in multiple angles at a range of (30°,60oand 90°). An experimental set-up was constructed and calibrated, 16 sets of fin-arrays were tested in atmosphere. Fin length, fin thicknesses and fin height were fixed at 300 mm, 3 mm and 13 mm respectively. The base-to-ambient temperature difference was also varied independently and systematically with the power supply to the heater ranging from 250 W/m2 to 1500W/m2. The frequency was varied at (0, 2, 6, 10 and 16 Hz) and the amplitude wain the range of (1.63-7.16 mm).The relation between the heat transfer coefficient and the amplitude of vibration is directly proportional with the inclination angle from (0o, 30o, 60o).Results show that the heat transfer coefficients of the heated plate in (30o) angle are about (19.27%) greater than those for the (60o) and exceeds that of the (90o) by (31.4%). https://tj-es.com/ojs/index.php/tjes/article/view/400Natural ConvectionForced vibrationLongitudinal fins
spellingShingle Abdalhamid Rafea Sarhan
Vertical Forced Vibration Effect on Natural Convective Performance of Longitudinal Fin Heat Sinks
Tikrit Journal of Engineering Sciences
Natural Convection
Forced vibration
Longitudinal fins
title Vertical Forced Vibration Effect on Natural Convective Performance of Longitudinal Fin Heat Sinks
title_full Vertical Forced Vibration Effect on Natural Convective Performance of Longitudinal Fin Heat Sinks
title_fullStr Vertical Forced Vibration Effect on Natural Convective Performance of Longitudinal Fin Heat Sinks
title_full_unstemmed Vertical Forced Vibration Effect on Natural Convective Performance of Longitudinal Fin Heat Sinks
title_short Vertical Forced Vibration Effect on Natural Convective Performance of Longitudinal Fin Heat Sinks
title_sort vertical forced vibration effect on natural convective performance of longitudinal fin heat sinks
topic Natural Convection
Forced vibration
Longitudinal fins
url https://tj-es.com/ojs/index.php/tjes/article/view/400
work_keys_str_mv AT abdalhamidrafeasarhan verticalforcedvibrationeffectonnaturalconvectiveperformanceoflongitudinalfinheatsinks