| Autor: |
Pal Girdhar, Khanh Linh Duong, Shamrao Chavan Sanjay, A. Vargas Darío, Thi Huan Trinh, Repale Anil, Wang Lei, Kurokawa Natsumi, Thi Ngoc Mai Nguyen, Suzuki Takeyuki, Alagaraj Praveena, Quoc Hoan Duong, Babasaheb Patil-Deshmukh Aditya, Puteri Tachrim Zetryana, Harmeyer Grace, Thi Thu Trang Tran, Kanchan Mithun, Arumugam Balakrishnan, Subhash Mohite Sagar, A.A. Al-otaibi Asmaa, Hashimoto Makoto, Mathe Steven, Subramaniam Arunambiga, Oida Kazuhiro, Thi Anh Tuyet Vu, Ohashi Fumina, Pathan Sultan, A. Alsufyani Taghreed, S. Cánepa Alicia, Legate Steven, Dau Xuan Duc, Eckert Timothy, Maniyeri Ranjith, J. Méndez Leticia, A. Saad Hosam |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Recent Patents on Mechanical Engineering. 13:118-125 |
| ISSN: |
2212-7976 |
| Popis: |
Background: Fluid flow in microchannels is restricted to low Reynolds number regimes and hence inducing chaotic mixing in such devices is a major challenge. Over the years, the Immersed Boundary Method (IBM) has proved its ability in handling complex fluid-structure interaction problems. Objectives: Inspired by recent patents in microchannel mixing devices, we study passive mixing effects by performing two-dimensional numerical simulations of wavy wall in channel flow using IBM. Methods: The continuity and Navier-Stokes equations governing the flow are solved by fractional step based finite volume method on a staggered Cartesian grid system. Fluid variables are described by Eulerian coordinates and solid boundary by Lagrangian coordinates. A four-point Dirac delta function is used to couple both the coordinate variables. A momentum forcing term is added to the governing equation in order to impose the no-slip boundary condition between the wavy wall and fluid interface. Results: Parametric study is carried out to analyze the fluid flow characteristics by varying amplitude and wavelength of wavy wall configurations for different Reynolds number. Conclusion: Configurations of wavy wall microchannels having a higher amplitude and lower wavelengths show optimum results for mixing applications. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
