2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM

Cold cutting processes are characterized to perform the kinetic energy needed to cut hard materials with little mechanical effort by means of the ultra-high flow pressure pumps, which produce water jets with a flow pressure value of around 90 ksi. These manufacturing processes may be studied conside...

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Autores:
Florez, Eder
Rojas Suárez, Jhan Piero
Espinel Blanco, Edwin
Tipo de recurso:
Article of journal
Fecha de publicación:
2021
Institución:
Universidad Francisco de Paula Santander
Repositorio:
Repositorio Digital UFPS
Idioma:
eng
OAI Identifier:
oai:repositorio.ufps.edu.co:ufps/6654
Acceso en línea:
https://repositorio.ufps.edu.co/handle/ufps/6654
https://doi.org/10.15866/iremos.v14i4.19332
Palabra clave:
CFD
Flow Simulation
Turbulence Modeling
Two-Phase
Water Jet Cutting
Rights
restrictedAccess
License
https://creativecommons.org/licenses/by/4.0/
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dc.title.eng.fl_str_mv 2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM
title 2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM
spellingShingle 2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM
CFD
Flow Simulation
Turbulence Modeling
Two-Phase
Water Jet Cutting
title_short 2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM
title_full 2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM
title_fullStr 2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM
title_full_unstemmed 2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM
title_sort 2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM
dc.creator.fl_str_mv Florez, Eder
Rojas Suárez, Jhan Piero
Espinel Blanco, Edwin
dc.contributor.author.none.fl_str_mv Florez, Eder
Rojas Suárez, Jhan Piero
Espinel Blanco, Edwin
dc.contributor.corporatename.spa.fl_str_mv International Review on Modelling and Simulations
dc.subject.proposal.eng.fl_str_mv CFD
Flow Simulation
Turbulence Modeling
Two-Phase
Water Jet Cutting
topic CFD
Flow Simulation
Turbulence Modeling
Two-Phase
Water Jet Cutting
description Cold cutting processes are characterized to perform the kinetic energy needed to cut hard materials with little mechanical effort by means of the ultra-high flow pressure pumps, which produce water jets with a flow pressure value of around 90 ksi. These manufacturing processes may be studied considering the fluid mechanics' principles that describe the transport phenomena for inviscid, continuous, and incompressible laminar flows in order to obtain theoretical results approximated to the process conditions. In this sense, the numerical modeling techniques applied in the analysis of water jet cutting processes define an efficient solution of the processes due to the physical analysis of the partial differential equations, which quantify the abrasive flow particles into the system. Taking into account the above, this research proposes a numerical analysis of the physical phenomena through the two-phase flow simulation in steady state with OpenFOAM. Abrasive and liquid phases are quantified to study the turbulent values, which describe the water jet behavior under different working conditions. A 2D model has been computed and discretized, considering the nozzle features in order to visualize and predict the abrasive mixture and flow rejected by using a low computational effort. Therefore, this numerical approach has been validated with a mesh independency analysis developed to verify the relation between the numerical data and the finite number of nodes computed in order to discretize a computational domain and to solve analytically the system proposed until reaching a high approximation between the model and the experimental values obtained during the cutting process by means of abrasive flows.
publishDate 2021
dc.date.issued.none.fl_str_mv 2021
dc.date.accessioned.none.fl_str_mv 2022-12-06T21:06:20Z
dc.date.available.none.fl_str_mv 2022-12-06T21:06:20Z
dc.type.spa.fl_str_mv Artículo de revista
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dc.relation.ispartof.none.fl_str_mv International Review on Modelling and Simulations Volume 14, No. 4, (2021)
dc.relation.citationedition.spa.fl_str_mv Vol. 14 No. 4 (2021)
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dc.relation.citationissue.spa.fl_str_mv No. 4
dc.relation.citationstartpage.spa.fl_str_mv 301
dc.relation.citationvolume.spa.fl_str_mv Vol. 14
dc.relation.cites.none.fl_str_mv Espinel, E., Rojas, J., Florez, E., 2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM®, (2021) International Review on Modelling and Simulations (IREMOS), 14 (4), pp. 301-310.doi:https://doi.org/10.15866/iremos.v14i4.19332
dc.relation.ispartofjournal.spa.fl_str_mv International Review on Modelling and Simulations
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spelling Florez, Ederab89489b9ee8e021693a0cc109902957600Rojas Suárez, Jhan Piero96cb752d974d2a7f4f66513af6ebbf8d600Espinel Blanco, Edwinddf5c56fad665148eaacb953bbe77785600International Review on Modelling and Simulations2022-12-06T21:06:20Z2022-12-06T21:06:20Z2021https://repositorio.ufps.edu.co/handle/ufps/6654https://doi.org/10.15866/iremos.v14i4.19332Cold cutting processes are characterized to perform the kinetic energy needed to cut hard materials with little mechanical effort by means of the ultra-high flow pressure pumps, which produce water jets with a flow pressure value of around 90 ksi. These manufacturing processes may be studied considering the fluid mechanics' principles that describe the transport phenomena for inviscid, continuous, and incompressible laminar flows in order to obtain theoretical results approximated to the process conditions. In this sense, the numerical modeling techniques applied in the analysis of water jet cutting processes define an efficient solution of the processes due to the physical analysis of the partial differential equations, which quantify the abrasive flow particles into the system. Taking into account the above, this research proposes a numerical analysis of the physical phenomena through the two-phase flow simulation in steady state with OpenFOAM. Abrasive and liquid phases are quantified to study the turbulent values, which describe the water jet behavior under different working conditions. A 2D model has been computed and discretized, considering the nozzle features in order to visualize and predict the abrasive mixture and flow rejected by using a low computational effort. Therefore, this numerical approach has been validated with a mesh independency analysis developed to verify the relation between the numerical data and the finite number of nodes computed in order to discretize a computational domain and to solve analytically the system proposed until reaching a high approximation between the model and the experimental values obtained during the cutting process by means of abrasive flows.05 Páginasapplication/pdfengInternational Review on Modelling and Simulations Volume 14, No. 4, (2021)Vol. 14 No. 4 (2021)310No. 4301Vol. 14Espinel, E., Rojas, J., Florez, E., 2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM®, (2021) International Review on Modelling and Simulations (IREMOS), 14 (4), pp. 301-310.doi:https://doi.org/10.15866/iremos.v14i4.19332International Review on Modelling and Simulationshttps://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/restrictedAccessAtribución 4.0 Internacional (CC BY 4.0)http://purl.org/coar/access_right/c_16echttps://www.praiseworthyprize.org/jsm/index.php?journal=iremos&page=article&op=view&path%5B%5D=248962D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAMArtículo de revistahttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1Textinfo:eu-repo/semantics/articlehttp://purl.org/redcol/resource_type/ARTinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/version/c_970fb48d4fbd8a85ItaliaCFDFlow SimulationTurbulence ModelingTwo-PhaseWater Jet CuttingObregon, L., Valencia, G., Duarte Forero, J., Efficiency Optimization Study of a Centrifugal Pump for Industrial Dredging Applications Using CFD, (2019) International Review on Modelling and Simulations (IREMOS), 12 (4), pp. 245-252.Orozco, T., Herrera, M., Duarte Forero, J., CFD Study of Heat Exchangers Applied in Brayton Cycles: a Case Study in Supercritical Condition Using Carbon Dioxide as Working Fluid, (2019) International Review on Modelling and Simulations (IREMOS), 12 (2), pp. 72-82.R. Tripathi, S. Hloch, S. Chattopadhyaya, D. Klichová, J. Ščučka, and A. K. Das, Application of the pulsating and continous water jet for granite erosion, International Journal of Rock Mechanics and Mining Sciences, vol. 126, p. 104209, 2020.U. Ashok Kumar, S. Mehtab Alam, and P. Laxminarayana, Influence of abrasive water jet cutting on glass fibre reinforced polymer (GFRP) composites, Materials Today: Proceedings, 2020.A. Polyakov, A. Zhabin, E. Averin, and A. Polyakov, Generalized equation for calculating rock cutting efficiency by pulsed water jets, Journal of Rock Mechanics and Geotechnical Engineering, vol. 11, no. 4, pp. 867-873, 2019.Y. Natarajan, P. K. Murugesan, M. Mohan, and S. A. 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Duarte Forero, Instantaneous in-Cylinder Volume Considering Deformation and Clearance due to Lubricating Film in Reciprocating Internal Combustion Engines, Energies, vol. 12, no. 8, p. 1437, 2019.G. Valencia Ochoa, C. Isaza-Roldan, and J.D. Forero, Economic and Exergo-Advance Analysis of a Waste Heat Recovery System Based on Regenerative Organic Rankine Cycle under Organic Fluids with Low Global Warming Potential, Energies, vol. 13, no. 6, p.1317, 2020.G. Valencia, J. Duarte, and C. Isaza-Roldan, Thermoeconomic analysis of different exhaust waste-heat recovery systems for natural gas engine based on ORC, Applied Sciences, vol. 9, no. 19, p. 4017, 2019.M. Alibaba, R. Pourdarbani, M.H.K. Manesh, G.V. Ochoa and, J.D. Forero, Thermodynamic, exergo-economic and exergo-environmental analysis of hybrid geothermal-solar power plant based on ORC cycle using emergy concept, Heliyon, vol. 6, no. 4, p. e03758, 2020.E. García-Ruiz et al., Effect of nozzle spacing in the formation of primary and secondary deposits in multi-nozzle inertial impactors part II: Numerical study., Journal of Aerosol Science, vol. 136, pp. 106-127, 2019.P. Dong, A. S. Kaiser, Z. Guan, X. Li, H. Gurgenci, and K. Hooman, A novel method to predict the transient start-up time for natural draft dry cooling towers in dispatchable power plants, International Journal of Heat and Mass Transfer, vol. 145, p. 118794, 2019.De la Hoz, J., Valencia, G., Duarte Forero, J., Reynolds Averaged Navier-Stokes Simulations of the Airflow in a Centrifugal Fan Using OpenFOAM, (2019) International Review on Modelling and Simulations (IREMOS), 12 (4), pp. 230-239.W. Liu, Y. Kang, X. Wang, Q. Liu, and Z. Fang, Integrated CFD-aided theoretical demonstration of cavitation modulation in self-sustained oscillating jets, Applied Mathematical Modelling, vol. 79, pp. 521-543, 2020.X. Long, X. Ruan, Q. Liu, Z. Chen, S. Xue, and Z. 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Yan, Numerical investigation on the effects of steam and water parameters on steam jet condensation through a double-hole nozzle, International Journal of Heat and Mass Transfer, vol. 126, pp. 831-842, 2018.ORIGINAL2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM® _ Espinel _ International Review on Modelling and Simulations (IREMOS).pdf2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM® _ Espinel _ International Review on Modelling and Simulations (IREMOS).pdfapplication/pdf402554https://repositorio.ufps.edu.co/bitstream/ufps/6654/1/2D%20Simulation%20of%20Two-Phase%20Flow%20for%20Water%20Jet%20Cutting%20Processes%20with%20OpenFOAM%c2%ae%20_%20Espinel%20_%20International%20Review%20on%20Modelling%20and%20Simulations%20%28IREMOS%29.pdf3ceb20b9c6840e07e1a8372e6a925dfaMD51open accessLICENSElicense.txtlicense.txttext/plain; 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 incorporada en las Obras Colectivas.

b.	Distribuir copias o fonogramas de las Obras, exhibirlas públicamente, ejecutarlas públicamente y/o ponerlas a disposición pública, incluyéndolas como incorporadas en Obras Colectivas, según corresponda.

c.	Distribuir copias de las Obras Derivadas que se generen, exhibirlas públicamente, ejecutarlas públicamente y/o ponerlas a disposición pública.
Los derechos mencionados anteriormente pueden ser ejercidos en todos los medios y formatos, actualmente conocidos o que se inventen en el futuro. Los derechos antes mencionados incluyen el derecho a realizar dichas modificaciones en la medida que sean técnicamente necesarias para ejercer los derechos en otro medio o formatos, pero de otra manera usted no está autorizado para realizar obras derivadas. Todos los derechos no otorgados expresamente por el Licenciante quedan por este medio reservados, incluyendo pero sin limitarse a aquellos que se mencionan en las secciones 4(d) y 4(e).

4. Restricciones.
La licencia otorgada en la anterior Sección 3 está expresamente sujeta y limitada por las siguientes restricciones:

a.	Usted puede distribuir, exhibir públicamente, ejecutar públicamente, o poner a disposición pública la Obra sólo bajo las condiciones de esta Licencia, y Usted debe incluir una copia de esta licencia o del Identificador Universal de Recursos de la misma con cada copia de la Obra que distribuya, exhiba públicamente, ejecute públicamente o ponga a disposición pública. No es posible ofrecer o imponer ninguna condición sobre la Obra que altere o limite las condiciones de esta Licencia o el ejercicio de los derechos de los destinatarios otorgados en este documento. No es posible sublicenciar la Obra. Usted debe mantener intactos todos los avisos que hagan referencia a esta Licencia y a la cláusula de limitación de garantías. Usted no puede distribuir, exhibir públicamente, ejecutar públicamente, o poner a disposición pública la Obra con alguna medida tecnológica que controle el acceso o la utilización de ella de una forma que sea inconsistente con las condiciones de esta Licencia. Lo anterior se aplica a la Obra incorporada a una Obra Colectiva, pero esto no exige que la Obra Colectiva aparte de la obra misma quede sujeta a las condiciones de esta Licencia. Si Usted crea una Obra Colectiva, previo aviso de cualquier Licenciante debe, en la medida de lo posible, eliminar de la Obra Colectiva cualquier referencia a dicho Licenciante o al Autor Original, según lo solicitado por el Licenciante y conforme lo exige la cláusula 4(c).

b.	Usted no puede ejercer ninguno de los derechos que le han sido otorgados en la Sección 3 precedente de modo que estén principalmente destinados o directamente dirigidos a conseguir un provecho comercial o una compensación monetaria privada. El intercambio de la Obra por otras obras protegidas por derechos de autor, ya sea a través de un sistema para compartir archivos digitales (digital file-sharing) o de cualquier otra manera no será considerado como estar destinado principalmente o dirigido directamente a conseguir un provecho comercial o una compensación monetaria privada, siempre que no se realice un pago mediante una compensación monetaria en relación con el intercambio de obras protegidas por el derecho de autor.

c.	Si usted distribuye, exhibe públicamente, ejecuta públicamente o ejecuta públicamente en forma digital la Obra o cualquier Obra Derivada u Obra Colectiva, Usted debe mantener intacta toda la información de derecho de autor de la Obra y proporcionar, de forma razonable según el medio o manera que Usted esté utilizando: (i) el nombre del Autor Original si está provisto (o seudónimo, si fuere aplicable), y/o (ii) el nombre de la parte o las partes que el Autor Original y/o el Licenciante hubieren designado para la atribución (v.g., un instituto patrocinador, editorial, publicación) en la información de los derechos de autor del Licenciante, términos de servicios o de otras formas razonables; el título de la Obra si está provisto; en la medida de lo razonablemente factible y, si está provisto, el Identificador Uniforme de Recursos (Uniform Resource Identifier) que el Licenciante especifica para ser asociado con la Obra, salvo que tal URI no se refiera a la nota sobre los derechos de autor o a la información sobre el licenciamiento de la Obra; y en el caso de una Obra Derivada, atribuir el crédito identificando el uso de la Obra en la Obra Derivada (v.g., "Traducción Francesa de la Obra del Autor Original," o "Guión Cinematográfico basado en la Obra original del Autor Original"). Tal crédito puede ser implementado de cualquier forma razonable; en el caso, sin embargo, de Obras Derivadas u Obras Colectivas, tal crédito aparecerá, como mínimo, donde aparece el crédito de cualquier otro autor comparable y de una manera, al menos, tan destacada como el crédito de otro autor comparable.

d.	Para evitar toda confusión, el Licenciante aclara que, cuando la obra es una composición musical:

i.	Regalías por interpretación y ejecución bajo licencias generales. El Licenciante se reserva el derecho exclusivo de autorizar la ejecución pública o la ejecución pública digital de la obra y de recolectar, sea individualmente o a través de una sociedad de gestión colectiva de derechos de autor y derechos conexos (por ejemplo, SAYCO), las regalías por la ejecución pública o por la ejecución pública digital de la obra (por ejemplo Webcast) licenciada bajo licencias generales, si la interpretación o ejecución de la obra está primordialmente orientada por o dirigida a la obtención de una ventaja comercial o una compensación monetaria privada.

ii.	Regalías por Fonogramas. El Licenciante se reserva el derecho exclusivo de recolectar, individualmente o a través de una sociedad de gestión colectiva de derechos de autor y derechos conexos (por ejemplo, los consagrados por la SAYCO), una agencia de derechos musicales o algún agente designado, las regalías por cualquier fonograma que Usted cree a partir de la obra (“versión cover”) y distribuya, en los términos del régimen de derechos de autor, si la creación o distribución de esa versión cover está primordialmente destinada o dirigida a obtener una ventaja comercial o una compensación monetaria privada.

e.	Gestión de Derechos de Autor sobre Interpretaciones y Ejecuciones Digitales (WebCasting). Para evitar toda confusión, el Licenciante aclara que, cuando la obra sea un fonograma, el Licenciante se reserva el derecho exclusivo de autorizar la ejecución pública digital de la obra (por ejemplo, webcast) y de recolectar, individualmente o a través de una sociedad de gestión colectiva de derechos de autor y derechos conexos (por ejemplo, ACINPRO), las regalías por la ejecución pública digital de la obra (por ejemplo, webcast), sujeta a las disposiciones aplicables del régimen de Derecho de Autor, si esta ejecución pública digital está primordialmente dirigida a obtener una ventaja comercial o una compensación monetaria privada.

5. Representaciones, Garantías y Limitaciones de Responsabilidad.
A MENOS QUE LAS PARTES LO ACORDARAN DE OTRA FORMA POR ESCRITO, EL LICENCIANTE OFRECE LA OBRA (EN EL ESTADO EN EL QUE SE ENCUENTRA) “TAL CUAL”, SIN BRINDAR GARANTÍAS DE CLASE ALGUNA RESPECTO DE LA OBRA, YA SEA EXPRESA, IMPLÍCITA, LEGAL O CUALQUIERA OTRA, INCLUYENDO, SIN LIMITARSE A ELLAS, GA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