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) Plots of falling velocity of the sphere versus falling time at T_w = 95 °C and T_s = 500 °C. Black points denote experimental values obtained by video clips and the red line refers to fitted curve by using formula: V(t) = V_T (1e^−t/τ).