Cd value for square cylinder

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 August 26, 2005, 04:14 Cd value for square cylinder #1 karthik S Guest   Posts: n/a hello ppl please help me....for a square cylinder(2D) the drag coefficient value comes to 2.1 . In the figure given below if i increase "L" and keep the "D" constant what will happen to the Cd value???? this is a 2D case. L ---------- | | | | ------> | | D | | | | ---------- any help is highly appreciated.. thanks in advance.... regards karthik

 August 26, 2005, 05:07 Re: Cd value for square cylinder #2 ramp Guest   Posts: n/a Do you mean how the Cd value will change from square cylinder (L=D) to rectangular cylinder (L=length, D=width) ? If so, then the following reference might be of your interest S. Nitin and R.P. Chhabra, "Non-isothermal flow of a power law fluid past a rectangular obstacle (of aspect ratio 1 Ã- 2) in a channel: Drag and heat transfer", International Journal of Engineering Science, Volume 43, Issues 8-9, May 2005, Pages 707-720 There you can find data table for drag (table 1) and Nusselt number (table 2) for Re=5-40 at n=1 (newtonian fluids). Regards, ramp

 September 20, 2005, 15:20 Re: Cd value for square cylinder #3 DON Guest   Posts: n/a hey karthik, the cd value for Re=10 is aroung 8. that i have seen in one thessis. i have added u in googletalk. my name is swadeshkumar. ok? don

 September 21, 2005, 05:01 Re: Cd value for square cylinder #4 ramp Guest   Posts: n/a The Cd valud for unconfined flow past square cylinder at Re=10 is 4.063 (see Nitin and Chhabra, Int J Engineering Science, 43, pp 707-720, 2005). For confined flow (blockage ratio: 1/8), Cd is 3.63 at Re=10 (see Dhiman et al., Int J Heat Mass Transfer, 48, 2005, Pages 4598-4614) Hey don, please check the thesis and these papers. Best regards, ramp

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