The flow over four square cylinders in an in-line, square arrangement was numerically investigated by using the finite volume method with CFD techniques. The working fluid is an incompressible ideal gas. The length of the sides of the array, L, is equal. The analysis is carried out for a Reynolds number of 300, with center-to-center distance ratios, L/D, ranging from 1.5 to 8.0. To fully understand the flow mechanism, details in terms of lift and drag coefficients and Strouhal numbers of the unsteady wake frequencies are analyzed, and the vortex shedding patterns around the four square cylinders are described. It is concluded that L/D has important effects on the drag and lift coefficients, vortex shedding frequencies, and flow field characteristics.
Bibliographical noteFunding Information:
The authors wish thanks, the National Natural Science Foundation of China (51676163) and the Fundamental Research Funds of Shaanxi Province (2015KJXX-12). This work was carried out in part using computing resources at the University to Minnesota Supercomputing Institute.
© 2017 Society of Thermal Engineers of Serbia.
- Drag coefficients
- Flow patterns
- Four square cylinders
- Lift coefficients
- Strouhal numbers