PENGARUH JARAK ALUR TERHADAP KESTABILAN ALIRAN FLUIDA BERDENYUT DALAM SALURAN BERPENAMPANG SEGIEMPAT
Abstract
The pulsatile fluid flow in a transverse grooved channel would become self-sustained oscillatory flow at a certain critical Reynold number. The critical Reynold number where laminar unsteady flow changed to unsteady transitional one depends on grooves distances. The objective of this research is to analyze the effect of grooves distances toward the vortex strength and the stability of the fluid flow. This research was done by implementing a closed square cross-section channel, where the bottom surface of the channel was semicircle grooved. The frequency of flow oscillation measurement was done by setting up a resistance manometer and measurement was done at several Reynold numbers. From the research result, it is seen that the largest vortex strength occurs at the smallest groove distance. The flows become instability in all of the grooves distances by seen Phase Plane.
Downloads
References
Ciptoadi, P. 2006. Pengaruh Jarak Alur Terhadap Kekuatan Vortex dan Rugi Tekanan Aliran Fluida Berdenyut Dalam Saluran Berpenampang Segiempat, Journal Ilmu-Ilmu Teknik Diagonal, Fakultas Teknik Universitas Merdeka Malang, Vol, 7 No. 1
Ciptoadi, P. 2009. Pengaruh Jarak Alur Terhadap Kekuatan Vortex dan Tegangan Geser Osilasi Aliran Fluida Berdenyut Dalam Saluran Berpenampang Segiempat, Jurnal Teknologi, Fakultas Teknik Universitas Pattimura, Vol, 6 No. 2
Ciptoadi, P. 2011. Pengaruh Jarak Alur Terhadap Kekuatan Vortex dan Bilangan Reynold Kritis Aliran Fluida Berdenyut Dalam Saluran Berpenampang Segiempat, Jurnal Teknologi, Fakultas Teknik Universitas Pattimura, Vol, 8 No. 1
Gloerfelt, X.; Bogey, Ch.; Bailly, Ch. and Juve, D. 2002. Aerodynamic Noise Induced by Laminar and Turbulent Boundary Layer Over Rectangular Cavities, American
Institute of Aeronautics and Astronautics, 2476
Kunitsugu, T. and Nishimura, T. 2000. The Development Process of Self-Sustained Oscillatory Flow in a Grooved Chanel, Department of Mechanical Engineering,
Yamaguchi University, Ube, 755- 8611 Japan.
Nishimura, T.; Morega, A.M. and Kunitsugu, K, 1997. Vortex Structure and Fluid Mixing in Pulsatile Flow Through Periodically Grooved Channels at Low Reynold
Numbers, JSME International Journal Series B, Vol. 40, No. 3: 377-385.
Nishimura, T.; Yoshinaka, M, and Kunitsugu, K. 2001. Oscillatory Momentum Transport and Fluid Mixing in Grooved Channels for Pulsatile Flow, Department of Mechanical Engineering, Yamaguchi University, Ube, 755-8611 Japan.
Raishingania, M.D. 2002. Fluid Dynamics (With Hydrodynamics) Fourth revised edition, S. Chand & Company LTD. New Delhi.
White, F.M. 1991. Viscous Fluid Flow, Second edition, McGraw-Hill, Inc.
An author who publishes in the ALE Proceeding agrees to the following terms:
- Author retains the copyright and grants ALE Proceeding the right of first publication of the work simultaneously licensed under the Creative Commons Attribution-ShareAlike 4.0 License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Author is able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book) with the acknowledgment of its initial publication in this journal.
- Author is permitted and encouraged to post his/her work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of the published work (See The Effect of Open Access).
Read more about the Creative Commons Attribution-ShareAlike 4.0 Licence here: https://creativecommons.org/licenses/by-sa/4.0/.
