NUMERICAL METHOD TO OVERCOME THE FLUID FLOW SEPARATION ON PIPE BEND 90 USING GUIDE VANE

Khalees Sedeq, . (2023) NUMERICAL METHOD TO OVERCOME THE FLUID FLOW SEPARATION ON PIPE BEND 90 USING GUIDE VANE. Numerical method to overcome the fluid flow separation on pipe bend 90° using guide vane, 12 (2). pp. 264-274. ISSN 2301-6663 (print version) & 2477-250X (online version)

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Abstract

This research delves more profoundly into examining fluid flow within a 90° pipe bend. Computational computations are executed utilizing the Reynolds-Averaged Navier-Stokes (RANS) equations. More precisely, this investigation utilizes the K-ε turbulence model. The present study employs a grid with the most elements used, chosen for its minimal error value. The central objective of this research revolves around mitigating flow separation by integrating a guide vane to modify the fluid flow attributes within a 90° pipe bend, with a curvature ratio R_c/D=1. In this instance, the pipe has a diameter of 0.01 m. When examining the 90° pipe bend without a guide vane, it becomes evident that flow separation occurs in the inner core region, and the maximum velocity region is situated in the outer core area. In contrast, when utilizing a guide vane in the 90° pipe bend, the fluid flow is directed more uniformly among the outer and inner core regions. Additionally, there is no identifiable low-velocity region where the guide vane is employed. Consequently, a guide vane effectively alleviates flow separation in the 90° pipe bend. Additionally, this study investigates various Reynolds numbers, namely 6×10^4,7×10^4, and 8×10^4. Increasing the Reynolds number does not significantly affect the velocity profile. However, it significantly influences the separation angle (α), with higher Reynolds numbers leading to larger α values. Furthermore, increasing the Reynolds number results in an earlier reattachment point in the 90° pipe bend without a guide vane.

Item Type:	Article
Additional Information:	[No.Panggil : 1910311008] [Pembimbing ; James Julian] [Penguji 1 : Fahrudin] [Penguji 2 : Damora Rhakasywi]
Uncontrolled Keywords:	pipe bend, separation, guide vane, Reynolds number
Subjects:	H Social Sciences > HC Economic History and Conditions
Divisions:	Fakultas Teknik > Program Studi Teknik Mesin (S1)
Depositing User:	KHALEES SEDEQ
Date Deposited:	20 Feb 2024 01:57
Last Modified:	20 Feb 2024 01:57
URI:	http://repository.upnvj.ac.id/id/eprint/28345

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