Jurnal Polimesin
Vol 22, No 1 (2024): February

Numerical Study On Characteristics Of The Backward-Facing Step Flow With Variations Of The Slope Angle Of The Step

james julian (Universitas Pembangunan Nasional Veteran Jakarta)
Rizki Aldi Anggara (Universitas Pembangunan Nasional Veteran Jakarta)
Fitri Wahyuni (Universitas Pembangunan Nasional Veteran Jakarta)

Article Info

Publish Date
29 Feb 2024

Abstract

The phenomenon of flow separation plays a vital role in the industrial world. The backward-facing step (BFS) is a general form representing flow separation. This study investigates the influence of the slope angle of the step on BFS flow characteristics at various low Reynolds numbers. According to the CFD results, the flow separation phenomenon forms a circulation zone for each increase in Reynolds numbers. This phenomenon is a result of the sudden expansion of the channel geometry. The BFS with the slope angle of the step demonstrates that the increase in the recirculation zone can be minimized, thus appropriately delaying flow separation. The recirculation zone causes fluid flow to reverse direction, affecting fluid flow efficiency due to resulting pressure differences. Therefore, a BFS with the slope angle of the step exhibits a more efficient flow phenomenon by minimizing the recirculation zone.

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Journal Info
Jurnal Polimesin
Website

Abbrev

polimesin

Publisher

Politeknik Negeri Lhokseumawe

Subject

Automotive Engineering Control & Systems Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

Description

Mechanical Engineering - Energy Conversion Engineering - Material Engineering - Manufacturing Technology - Mechatronics - Machine and Mechanism Design - ...