Experimental and numerical analysis of transient liquid slug motion in a voided line

2004-05-01
Bozkuş, Zafer
GER, M
Show full item record
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
180
views
0
downloads
In this paper, the hydrodynamics of a single transient slug in a voided line was investigated numerically and experimentally. In the experiments, the liquid slugs of various lengths were propelled into an inclined smooth steel pipe under several different driving air pressures. The pipe segment terminates in an open ended elbow; the pressure time histories are recorded at this elbow The recorded peak pressures are correlated to the tank pressures and pipe and slug geometry. Dimensionless parameters are developed to present the experimental data. Moreover, the flow is investigated numerically using several Godunov type schemes, namely, basic Godunov Scheme, Total Variation Diminishing (TVD), based Weighted Average Flux (WAF) method and two different Monotone Upstream Schemes,for Conservation Laws (MUSCL) methods. These schemes employ Godunov's approach facilitating exact and Harten, Lax and van Leer's modified approximate solver (HLLC) type solution methods solving the Riemann problem of gas dynamics equations. Furthermore, the recorded peak pressures at the elbow are compared with the results of the numerical analysis and results of two earlier studies.
Mechanical Engineering, Mechanics of Materials, Safety, Risk, Reliability and Quality
https://hdl.handle.net/11511/36147
JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME
Department of Civil Engineering, Article

Suggestions

A New Method for Prediction of the Transient Force Generated by a Liquid Slug Impact on an Elbow of an Initially Voided Line
KAYHAN, Bulent A.; Bozkuş, Zafer (ASME International, 2011-04-01)
The aim of the present study is to predict the impact force applied by an individual transient liquid slug on an elbow at the end of a horizontal and initially empty pipeline. The liquid slug is driven by pressurized air in a tank located upstream of the pipeline. The time dependent pressure distribution along the elbow and a vertical extension segment after the elbow are solved with a 1D numerical approach along a curved line mesh. An assumed and calibrated axial turbulent velocity profile function with 3D...
Dynamic Force on an Elbow Caused by a Traveling Liquid Slug
Hou, Darcy Q.; TIJSSELING, Arris S.; Bozkuş, Zafer (ASME International, 2014-06-01)
The impact force on an elbow induced by traveling isolated liquid slugs in a horizontal pipeline is studied. A literature review reveals that the force on the elbow is mainly due to momentum transfer in changing the fluid flow direction around the elbow. Therefore, to accurately calculate the magnitude and duration of the impact force, the slug arrival velocity at the elbow needs to be well predicted. The hydrodynamic behavior of the slug passing through the elbow needs to be properly modeled too. A combina...
In Situ Lateral Load Testing of a Two-Story Solid Clay Brick Masonry Building
ALDEMİR, ALPER; Binici, Barış; Canbay, Erdem; Yakut, Ahmet (American Society of Civil Engineers (ASCE), 2018-10-01)
The seismic behavior of unreinforced masonry (URM) structures has usually been investigated by conducting laboratory tests. Such efforts, although useful in order to understand the response of single walls or subassemblages, cannot fully mimic the in situ seismic response of masonry buildings. In this study, in situ lateral load testing of a two-story full-scale URM building was conducted. First, forced vibration tests were performed to determine the vibration frequencies of the building. Afterwards, the bu...
Modeling Liquid Slugs Accelerating in Inclined Conduits
Korzilius, Stan P.; Tijsseling, Arris S.; Bozkuş, Zafer; Anthonissen, Martijn J. H.; Schilders, Wil H. A. (ASME International, 2017-12-01)
In this article, we simulate traveling liquid slugs in conduits, as they may occur in systems carrying high-pressure steam. We consider both horizontal and inclined pipes in which the slug is accelerated by a suddenly applied pressure gradient, while at the same time, gravity and friction work in the opposite direction. This causes a steep slug front and an extended slug tail. The shapes of front and tail are of interest since they determine the forces exerted on bends and other obstacles in the piping syst...
Numerical and experimental determination of the residual stress state in multipass welded API 5LX70 plates
Garipova, Nuriya; Batıgün, Caner; Gür, Cemil Hakan (2014-01-01)
Residual stres s distributions in multipass welded API SL X70 steel plates were determined by numerical and experimental methods. SYSWELD finite element software was used for numerical simulations. Microstructure variations were also considered for calculation of residual stresses. The continuous cooling transformation diagram was obtained via JMatPro software. The results showed that residual stress distribution is sensitive to number of weld passes, and microstructure changes. The simulation results were ...
Citation Formats
Z. Bozkuş and M. GER, “Experimental and numerical analysis of transient liquid slug motion in a voided line,” JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME, pp. 241–249, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36147.
METU IIS - Integrated Information Service open@metu.edu.tr