Experimental Investigation in Drag Coefficient of Cubes
Source abstract
Abstract
Focused on the needs of an accurate drag model for non-spherical particles, a free settling experiment was performed in this paper using the uniformed cube and spliced cube. The drag coefficient of the cube with typical orientation angles at different Reynolds numbers is obtained. The results show that the drag coefficient of the cube is always higher than that of the sphere in the same Reynolds number (Re), especially in the range of Re > 2.58 × 102. The orientation angle has different effects on the drag coefficient of the cube in different Reynolds number ranges. The drag coefficient of the cube is in direct proportion to its orientation angle in the range of 10 < Re < 103. Then, a new correlation for the drag coefficient of the cube is brought forward. The drag correlation model shows a good agreement with the experimental data as well as the data reported in previous studies.
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Research context
OpenAlex topics: Spacecraft and Cryogenic Technologies · Tribology and Lubrication Engineering · Fluid Dynamics Simulations and Interactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Inlet and Exhaust System Technology, Nanjing University of Aeronautics and Astronautics, Ministry of Education, Nanjing 210016, China
AECC Sichuan Gas Turbine Establishment, Mianyang 621000, China
Hunan Aviation Powerplant Research Institute, Aero Engine Corporation of China, Zhuzhou 412000, China
Zhengde Polytechnic, Nanjing 211106, China
Funding
National Science and Technology Major Project · Defense Industrial Technology Development Program
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