Simulasi Numerik Aliran Melintasi Backward Facing Step Dengan Penambahan Rectangular Bump

Syurkarni Ali, Luthfi Hakim

Abstract


Rectangular bump merupakan salah satu jenis pengganggu atau turbulator dengan tujuan mengganggu aliran supaya aliran menjadi turbulen lebih awal sebelum daerah recirculaion  flow.  Penelitian  ini  dilakukan  untuk  mendapatkan  informasi  mengenai

fenomena aliran yang melewati backward facing step setelah dilakukan penambahan rectangular bump didepan daerah recirculation. Rectangular bump ditempakan dengan jarak yang berbeda (s/d = 0,5 dan s/d = 2) dengan harapan bisa memprediksi Reattachmen lenght, menghitung  nilai Coefficient pressure (Cp)  dan  Skin  friction  coefficient  (Cf). Penelitian dilakukan secara numerik menggunakan perangkat lunak Computational Fluid Dinamics (CFD) komersial. Dengan memilih berbagai model turbulensi, yaitu model

Standard k-� (SKE), model Realisable k-� (RKE), model Standard k-???? (SKW) dan model Shear-Stress-Transport (SST) k-???? (SSTKW).


Full Text:

PDF

References


Skovgaard, M, Nielsen, Peter Vilhelm, (1991), “Numerical Investigation of Transitional Flow over a Backward Facing Step Using a Low”, Aalborg: Dept. of Building Technology and Structural Engineering. Indoor Environmental Technology, No. 22, Vol. R9150

Restivo. A. M. 0, (1979), “Turbulent flow in ventilated rooms”, Imp. Coll. of Science

and Tech, Mech Eng. Dept. Ph.D. Thesis

Peng Shia-Hui, (1996), “The Two-Equation Turbulence k-ω Model Applied to

Recirculating Ventilation Flows”, Department of Thermo-and Fluid Dynamics.

Driver, D. M, Seegmiler, H. L, (1985), “Backward facing step with inclined opposite wall experiments”

J.Y.Kim, Afshin J. Ghajar, Clement Tang, (2005), “Comparison of near wall treatment methods for high Reynolds Number backward facing step flow”, School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater,




DOI: https://doi.org/10.35308/jmkn.v5i1.1622

Refbacks

  • There are currently no refbacks.