Computation of Flows with Free Surfaces

Demirdžić, I.; Muzaferija, S.; Perić, Milovan; Schreck, Eberhard; Seidl, Volker

doi:10.1007/978-3-642-60185-9_42

Cited by 6 publications

(5 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The bold letters indicate the vectors or tensors. The VOF method and high-resolution interface capturing (HRIC) scheme (Demirdžić et al, 1999) are adopted to solve the two-phase flow. The convection of the VOF function ψ is expressed as (Albadawi et al, 2013)…”

Section: Governing Equationsmentioning

confidence: 99%

Numerical simulation of gas–liquid two-phase flow in a horizontal manifold with downward branches

NISHIO,

KUROSE

2024

JFST

View full text Add to dashboard Cite

Large eddy simulations (LESs) with the volume of fluid (VOF) method are applied to gas-liquid two-phase flows in a horizontal manifold with five downward branches under various inlet flow rates and quality conditions, and the validity is examined by comparison with an experiment. Furthermore, the correlation for the prediction of the liquid mass fraction, defined as the ratio of the liquid mass flow rate at each branch and the inlet liquid mass flow rate, is investigated based on the LES results. The results show that the predicted liquid mass fraction is the highest at the first downward branch and gradually decreases at the downward branches located downstream, which is consistent with the experiment, both qualitatively and quantitatively. Based on the LES results of the various inlet flow rates and quality conditions, a new correlation expression on liquid distribution rate (LDR), defined as the ratio of the inlet liquid flow rate and outlet liquid flow rate of the branch, is proposed. It is possible for the proposed correlation expression to significantly reduce the air-conditioning system evaluation cost.

show abstract

Section: Governing Equationsmentioning

confidence: 99%

Numerical simulation of gas–liquid two-phase flow in a horizontal manifold with downward branches

NISHIO,

KUROSE

2024

JFST

View full text Add to dashboard Cite

show abstract

“…The working fluid was dry air, while the turbulence model was standard k-ε model [15]. Numerical method employed for modeling the flow of dry air through the multi-hole orifice meter was finite volume method.…”

Section: Equation Of Statementioning

confidence: 99%

“…Numerical method employed for modeling the flow of dry air through the multi-hole orifice meter was finite volume method. The methodology follows closely the one presented in [15].…”

Section: Equation Of Statementioning

confidence: 99%

Numerical Analysis of Newtonian Fluid Flow Through Multi-Hole Orifice Meter

Almutairi,

Hasečić,

Džaferović

2023

Proceedings of the 9th World Congress on Mechanical, Chemical, and Material Engineering

View full text Add to dashboard Cite

The influence of multi-hole orifice flow meter geometry parameters on the parameters of Newtonian fluid through multihole orifice meters was investigated using computational fluid dynamics as well as the effect of contamination in front of the MHO flow meter. The air flow was steady, three-dimensional, and turbulent. Analysed Newtonian fluid was air and physical properties that were considered were density and dynamic viscosity. The numerical method was finite volume method, and standard k-ε turbulence model was used for turbulence modelling. Multi-hole orifice meter with three different β parameters 0.55, 0.6 and 0.7, was observed and Reynold's number was 10 5 . The pressure drop and discharge coefficient were analysed. Numerical simulations were performed using commercial software the STAR-CCM+ 2019.2. It was found that increase in 𝛽𝛽 parameter results with the decrease in pressure drop and increase in discharge coefficient. Also, it was found that that the influence of 𝛽𝛽 parameter is much higher when analyzing pressure drop rather than discharge coefficient values. Numerical simulations were also performed to investigate the effect of contaminations in front of the MHO plate with 𝛽𝛽 = 0.5, on the discharge coefficients. It was found that as the contamination angle is increased the discharge coefficient tends to increase.

show abstract

“…The resolution of the RANS (Reynolds Average Navier-Strokes) equation model [20] and Eulerian multiphase equations were used to simulate LN 2 flow from the nozzle to the workpiece [21]. It enables one to represent the wall-bounded turbulent flow.…”

Section: Numerical Model and Parametersmentioning

confidence: 99%

Hybrid experimental/modelling methodology for identifying the convective heat transfer coefficient in cryogenic assisted machining

Lequien

Poulachon

Outeiro

et al. 2018

Applied Thermal Engineering

View full text Add to dashboard Cite

is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible.This is an author-deposited version published in: https://sam.ensam.eu Handle ID: .http://hdl.handle.net/10985/12049 To cite this version :Pierre LEQUIEN, Gérard POULACHON, José OUTEIRO, Joël RECH -Hybrid experimental/modelling methodology for identifying the convective heat transfer coefficient in cryogenic assisted machining -Applied Thermal Engineering p.14 -2017Any correspondence concerning this service should be sent to the repository This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.Hybrid experimental/modelling methodology for identifying the convective heat transfer coefficient in cryogenic assisted machining ABSTRACTCryogenic assisted machining has become a very popular method in the metal cutting industry, as it enables the cooling of a cutting zone for improving surface integrity or/and tool life without contaminating the machined part. However, the thermal interaction between liquid nitrogen (LN 2 ) and a hot cutting zone remains unclear. The main objective of this work is to analyse the thermal phenomena occurring at the LN 2 jet/workpiece interface. The nitrogen liquid/gas phase proportion has a significant influence on the heat transfer. To determine the influence of LN 2 jet parameters on the convective heat transfer coefficient, a model based on the projection of an LN 2 jet on a workpiece instrumented with thermocouples is proposed. The most influential parameters of the thermal distribution and heat transfer coefficient are LN 2 pressure, nozzle diameter, projection angle and the distance between the nozzle and the workpiece surface.

show abstract

Computation of Flows with Free Surfaces

Cited by 6 publications

References 2 publications

Numerical simulation of gas–liquid two-phase flow in a horizontal manifold with downward branches

Numerical simulation of gas–liquid two-phase flow in a horizontal manifold with downward branches

Numerical Analysis of Newtonian Fluid Flow Through Multi-Hole Orifice Meter

Hybrid experimental/modelling methodology for identifying the convective heat transfer coefficient in cryogenic assisted machining

Contact Info

Product

Resources

About