Drag reduction characteristics of heated spheres falling into water<xref rid="cpb_27_12_124703_fn1" ref-type="fn">*</xref><fn id="cpb_27_12_124703_fn1"><label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant No. 11672094).</p></fn>

Drag reduction characteristics of heated spheres falling into water**

Project supported by the National Natural Science Foundation of China (Grant No. 11672094).

Li Jia-Chuan, Wei Ying-Jie^†, Wang Cong, Xia Wei-Xue

(color online) Falling velocity of sphere varying with falling time at T_w = 25 °C and T_s = 400 °C. Black points represent experimental values obtained by video clips and the red line refers to fitted curve by using cubic polynomial formula: V(t) = 0.32 + 3.62t + 7.15t² − 20.56t³.