Effect of Dimpled Surface with Straight Spoiler Turbulators on Heat Transfer and Fluid Flow Characteristics for Channel
Sandeep S Kore1, Sunil Dambhare2, Rupesh Yadav3, Firoz Pathan4, Shrikant Nawale5
1Sandeep S. Kore*, Mechanical Engineering Department, Vishwakarma Institute of Information and Technology, Pune.
2Sunil G. dambhare, Mechanical Engineering Department, D Y Patil Institute of Engineering Manegement and Research, Pune, India
3Rupesh R. Yadav, Deparment of Mechanical Engineering, Marathwada Mitra Mandal College of Engineering, Pune, India.
4Firoz Pathan, Deparment of Mechanical Engineering, Marathwada Mitra Mandal College of Engineering, Pune, India.
5Shrikant Nawale, Deparment of Mechanical Engineering, Marathwada Mitra Mandal College of Engineering, Pune, India.
Manuscript received on September 16, 2019. | Revised Manuscript received on 24 September, 2019. | Manuscript published on October 10, 2019. | PP: 298-301 | Volume-8 Issue-12, October 2019. | Retrieval Number: J96110881019/2019©BEIESP | DOI: 10.35940/ijitee.J9611.1081219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: An experimental investigation has been carried out for heat transfer enhancement over dimpled surface using spoiler turbulators. The experimentation is carried out over the aluminum plate of 1000 mm x 10 mm x 5 mm and Reynolds number ranging from 10,000 to 33,000. The δ/d ratio for dimple is 0.3, which is kept constant. The pitch for dimples are varied as 16 mm, 18 mm and 20 mm. Turbulators were used over the dimples surface in inline and staggered arrangement which provides different flow structure and produces turbulence. Turbulators are mounted over dimples at an angle of 12o with respect to flat plate. Experimental results were validated using Dittus-Boelter and Blasius equations. Analysis is made using Nusselt number, friction factor and performance index. It has been found that compared to dimpled plate performance of dimpled surface with spoiler tabulator plate is higher. If we compare inline and staggered arrangement, performance of inline arrangement dimple plate with turbulator is higher compared to staggered arrangement. This is due to in staggered arrangement at some locations chocking of flow may takes place which reduces heat transfer rate.
Keywords: Vortex Generator, Dimple Surface, Spoiler Turbulators, Heat Transfer Enhancement
Scope of the Article: Heat Transfer