TY  - JOUR
T1  - ANALYTICAL SOLUTION FOR POTENTIAL FLOW AROUND A ROTATING SPHERE AND COMPARISON WITH CFD
AU  - Almıqasbı, Tarıq Abraheem Mohammed
AU  - Yılmaz, Ekrem
AU  - Şalcı, Aydın
PY  - 2024
DA  - June
Y2  - 2024
DO  - 10.53600/ajesa.1424673
JF  - AURUM Journal of Engineering Systems and Architecture
JO  - A-JESA
PB  - Altınbaş University
WT  - DergiPark
SN  - 2564-6397
SP  - 101
EP  - 111
VL  - 8
IS  - 1
LA  - en
AB  - A three-dimensional analytical solution was derived for an incompressible steady potential at an initially uniform velocity flow around a sphere, which translates forward, backward, rotates longitudinally or transversally. The concept of relative velocity was used to analyze the flow around the transitionally moving sphere. To analyze the flow around the longitudinally rotating sphere, A formula of the circumferential velocity of the fluid is found at the equatorial plane of the sphere and then generalized to the whole sphere as an approximation. The superposition principle of velocities was used to analyze the flow around the transversely rotating sphere, the stagnation points were detected and analyzed, the pressure distribution at the equator was calculated and compared with the experimental and CFD results, and the lift coefficient was calculated and compared with the experimental results and a good agreement for C_p and C_L was found at low spin factors, In contrast, at high spin factors the results begin to diverge due to the viscous effects and eddy formation.
KW  - Potential Flow
KW  - Analytical Solution
KW  - Rotating Sphere
KW  - Superposition Principle
KW  - Stagnation Points
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UR  - https://doi.org/10.53600/ajesa.1424673
L1  - https://dergipark.org.tr/en/download/article-file/3679999
ER  -