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Numerical Simulation of Harmonic Gust Induced 2D Low-Re Incompressible Flow Over Tandem Circular Cylinders using ECFRUNS |
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| รหัสดีโอไอ | |
| Creator | 1. Y. A. Joshi 2. R. Bhoraniya 3. A. B. Harichandan |
| Title | Numerical Simulation of Harmonic Gust Induced 2D Low-Re Incompressible Flow Over Tandem Circular Cylinders using ECFRUNS |
| Publisher | Thai Society of Mechanical Engineers (TSME) |
| Publication Year | 2568 |
| Journal Title | Journal of Research and Applications in Mechanical Engineering (JRAME) |
| Journal Vol. | 13 |
| Journal No. | 2 |
| Page no. | JRAME-25-13-018 (p.1-16) |
| Keyword | Low-Re, gust frequency, incompressible flow, circular cylinders, wake, vorticity |
| URL Website | https://ph01.tci-thaijo.org/index.php/jrame/index |
| Website title | Journal of Research and Applications in Mechanical Engineering (JRAME) |
| ISSN | 2229-2152 |
| Abstract | The paper presents a numerical investigation of the harmonic gust induced two dimensional incompressible flow over two tandem circular cylinders configurations. The extended cell flux reconstruction scheme (ECFRUNS), developed for unstructured triangular cells grid, have been employed for the flow solution. The gust angular frequency (ω), which is the variable generating impulse harmonic gust and affecting inlet flow fluctuations, has been investigated to identify its effective value for improved qualitative wake characteristics. The low- Reynolds number (Re) as a second flow variable has been investigated with an impulse harmonic (gusty) inflow to examine the effect of the Reynolds number under gusty situations. The non-dimensional longitudinal gap-to-diameter ratio (R = L/D) as a geometrical variable has also been investigated to check its effect with a combination of flow variables and gust. The streamlines and vorticity contours are employed for quantitative flow visualization. The force coefficients (Cl & Cd), and the Strouhal Number (St) have been computed as quantitative result parameter. They are compared with literature wherever possible. The investigated flow characteristics i.e. vortex shedding frequency, gap flow, wake region have been discussed in detail. The investigations establishes the capabilities of ECFRUNS scheme to solve one dimensional harmonic gust induced low-Re incompressible external flow problems explicitly directly on physical plane. |
