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Tamil Chandran, A., Suthakar, T., Balasubramanian, K. R., Rammohan, S., Chandapillai, Jacob. (1401). Numerical prediction of the drag coefficient of bluff bodies in three-dimensional pipe flow. فناوری آموزش, 12(1), 13-29. doi: 10.22061/jcarme.2021.7114.1931
A. Tamil Chandran; T. Suthakar; K. R. Balasubramanian; S. Rammohan; Jacob Chandapillai. "Numerical prediction of the drag coefficient of bluff bodies in three-dimensional pipe flow". فناوری آموزش, 12, 1, 1401, 13-29. doi: 10.22061/jcarme.2021.7114.1931
Tamil Chandran, A., Suthakar, T., Balasubramanian, K. R., Rammohan, S., Chandapillai, Jacob. (1401). 'Numerical prediction of the drag coefficient of bluff bodies in three-dimensional pipe flow', فناوری آموزش, 12(1), pp. 13-29. doi: 10.22061/jcarme.2021.7114.1931
Tamil Chandran, A., Suthakar, T., Balasubramanian, K. R., Rammohan, S., Chandapillai, Jacob. Numerical prediction of the drag coefficient of bluff bodies in three-dimensional pipe flow. فناوری آموزش, 1401; 12(1): 13-29. doi: 10.22061/jcarme.2021.7114.1931

Numerical prediction of the drag coefficient of bluff bodies in three-dimensional pipe flow

Journal of Computational & Applied Research in Mechanical Engineering (JCARME)
مقاله 2، دوره 12، شماره 1 - شماره پیاپی 23، مهر 2022، صفحه 13-29    اصل مقاله (1.83 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22061/jcarme.2021.7114.1931
نویسندگان
A. Tamil Chandran* 1؛ T. Suthakar2؛ K. R. Balasubramanian2؛ S. Rammohan1؛ Jacob Chandapillai1
1Fluid Control Research Institute, Palakkad, Kerala- 678623, India
2Mechanical Engineering department, National Institute of Technology- Trichirapallai, Tamil Nadu, India
تاریخ دریافت: 23 تیر 1399،  تاریخ بازنگری: 08 آبان 1400،  تاریخ پذیرش: 12 آبان 1400 
چکیده
Numerical analysis of drag coefficient of three-dimensional bluff bodies such as flat plates, cylinder, triangular prism, semicircular profiles located in the flow path of the pipe was performed. Bluff bodies of various lengths are analysed using a turbulence model. The effect of bluff body thickness on drag coefficient was analysed. A significant observation of the study is the reduction in drag coefficient with an increase in thickness. Effect of pressure coefficient on drag coefficient was evaluated. The study confirms that frictional coefficient has negligible effect on drag coefficient in the studied Reynolds number range. Change in drag coefficient over a wide range of Reynolds number was studied and is reported. Irrespective of geometry and length, the study indicates that there is a significant difference in drag coefficient between two dimensional and three dimensional simulation studies. It is also concluded that the length  of a bluff body in a confined domain  has a significant effect on its drag coefficient.
کلیدواژه‌ها
Drag coefficient؛ Pressure coefficient؛ Turbulence model؛ Computational fluid dynamics؛ Bluff body؛ Friction coefficient
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