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Browsing by Subject "mechanical engineering"

Browsing by Subject "mechanical engineering"

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  • Marcano, A.; Rojas-Solorzano, L.; Reyes, M. (INTERNATIONAL CONFERENCE ONHYDRAULICS OF DAMS AND RIVER STRUCTURES, TEHRAN, IRAN; 04/2004, 2004-04)
    In this paper, the 3-D CFD simulation of the free-surface flow approaching the intakes of Caruachi Powerhouse is presented. The aim of the investigation is to determine whether or not vortex structures are likely to ...
  • Inglezakis, V.; Rojas-Solorzano, L.; Kim, J.; Moustakas, K.; Aitbekova, A.; Ismailova, A.; Shorakyzy, G.; Kystauova, A.; Abirov, A.A.; Serikbayev, N.S. (2014)
    The city of Astana, capital of Kazakhstan with population of 804,474 generates approximately 1.39 kg/inh./day of municipal solid waste while collection rate is higher than 72% (MSW). An MBT plant of planned capacity of ...
  • Durán-García, Martín; Ramírez, Yrina; Bravo, Ricardo; Rojas-Solorzano, L. (Red de Revistas Científicas de América Latina, el Caribe, España y Portugal Sistema de Información Científica, 2012-02)
    Biogas generation plants using organic waste are a daily reality that can be observed in different areas of waste disposal that exist in many cities of the world. In fact, the generation of biogas through anaerobic ...
  • Rojas-Solorzano, L. (Nazarbayev University School of Engineering and Digital Sciences, 1997-05-10)
    The receptivity and stability of steady non-separated and unsteady separated boundary layers in a two-dimensional airfoil cascade flow is investigated by Direct Numerical Simulation of the time-dependent Navier-stokes and ...
  • Urbina, Rafael J.; Rojas-Solorzano, L.; Blanco, Armando J. (Second International Tunnel Safety Forum, Lyon, April 2009, 2009-04)
    This work aims to the modeling of CO transport in one section considered critical of the Boqueron I tunnel, located on the outskirts of Caracas, the capital city of Venezuela, with a scenario where vehicles are stopped ...
  • Arevalo, Angela; Montilla, Gonzalo; Rojas-Solorzano, L.; Reyes, Miguel; Marín, Juan (CIMENICS MF-185-2006, 2006)
    The transient free surface flow within a 1:30 model of the intake (penstock) to Power House II of Guri Hydro-Power Plant (Venezuela) is studied. The geometry of the model includes a reservoir of 4.31 meters upstream the ...
  • Hernández, Franz H.; Blanco, Armando J.; Rojas-Solorzano, L. (Proceedings of FEDSM2008 8th Symposium on Applications in Computational Fluid Dynamics August 17-20, Jacksonville, FL, 2008-08-17)
    Liquid-solid two-phase flows are found in numerous operations in the chemical, petroleum, pharmaceutical and many other industries. In numerous cases, the mixture or slurry that flows is composed by a suspension of solid ...
  • Riera-Ortiz, Jaime; Zeppieri, Suzana; Rojas-Solorzano, L.; Derjani, Sylvana (2011)
    Computational fluid dynamics (CFD) is employed to simulate the air-water system in a spouted column with a draft tube. Numerical results of Reynolds-averaged Navier-Stokes (RANS) equations using the k-s and k-w two-equation ...
  • Pineda, Saira F.; Blanco, Armando J.; Rojas-Solorzano, L. (Proceedings of FEDSM2009 ASME 2009 Fluids Engineering Division Summer Meeting August 2-5, 2009, Vail, Colorado USA, 2009-08-02)
    Flows in rivers, floodplains and coastal zones are very complex due to uneven bottom topography and irregular boundaries of the flow domain. In particular, when the flow shows strong gradients in water depth and velocity ...
  • F., Vittori; Rojas-Solorzano, L.; Pavageau, M. (Memorias del Congreso ASME USB 2011: IX CONGRESO ANUAL DE INGENIERÍA ASME USB 2011 03, 04 Y 05 de junio, 2011, Caracas - Venezuela, 2011)
    Impinging plane jets are flow configurations with applications in many fields. The ability of several turbulence models to simulate this kind of flow was assessed. The numerical results were compared with the data of Cooper ...
  • Roldan, Constantino; Pieretti, Pedro; Rojas-Solorzano, L. (2010)
    The research consisted in a conceptual and basic design of a prototype Stirling engine with the purpose of taking advantage of the solar radiation to produce electric energy. The work began with a bibliography review ...
  • Corrales-Barallobre, C.; Martínez-Huen, R.; Alvarez, L.; Polanco, G.; Rojas-Solorzano, L. (FEDSM2000 FORUM ON FLUID MEASURENMENT AND INTRUMENTATION BOSTON, MASSACHUSETTS, ON JUNE 11-15, 2000, 2000-06-11)
    The design and test of a flow deflector gate used for controlling the flow deviation toward the primary tank in a flow-meter calibration facility is presented. The deflector gate is pneumatically controlled and permits the ...
  • Corrales-Barallobre, C.; Martínez-Huen, R.; Alvarez, Luis; Polanco, G.; Rojas-Solorzano, L. (FEDSM2000 FORUM ON FLUID MEASURENMENT AND INTRUMENTATION BOSTON, MASSACHUSETTS, ON JUNE 11-15, 2000, 2000-06-11)
    The design and set up of a large-scale flowmeter calibration and test facility is presented. The facility was designed to handle flowmeters with diameters between 6” and 14”, flow rates up to 0.3 m3/s and to give results ...
  • Corrales-Barallobre, C.; Martínez-Huen, R.; Alvarez, Luis; Polanco, G.; Rojas-Solorzano, L. (FEDSM2000 FORUM ON FLUID MEASURENMENT AND INSTRUMENTATION BOSTON, MASSACHUSETTS, ON JUNE 11-15, 2000, 2000-06-11)
    The design and test of the distribution manifold for a large-scale flowmeter calibration facility is presented. The design was intended to have an air-free flow operation and a free-surface flow-like towards the downstream ...
  • Abilgaziyev, Anuar; Nogerbek, Nurbol; Rojas-Solorzano, L. (Journal of Transportation Technologies, 2015-10-27)
    The Positive Crankcase Ventilation (PCV) system in a car engine is designed to lower the pressure in the crankcase, which otherwise could lead to oil leaks and seal damage. The rotation of crankshaft in the crankcase causes ...
  • Rojas-Solorzano, L. (Proceedings of FEDSM’98 1998 ASME Fluids Engineering Division Summer Meeting June 21-25, 1998, Washington, DC, 1998-06-21)
    The effects on the boundary layer receptivity in airfoil cascade flow caused by superposed disturbances are studied using an energetic approach. The separated terms in the Fluctuating Kinetic Energy (FKE) budget are ...
  • Riera Ortiz, Jaime. A.; Zeppieri, Susana; Rojas-Solorzano, L.; Derjani-Bayeh, Sylvana (2011-04-14)
    Abstract: The hydrodynamics of a dispersed air-water system within a spouted column with a concentric draft tube and a conical base is simulated using CFD based on a two–fluid Euler–Euler (E-E) modeling framework and k-ε ...
  • Azevedo, Ricardo; Rojas-Solorzano, L.; Leal, João (2nd European IAHR Congress; 06/2012, 2012-06)
    Straight compound-channel flows have been studied by many authors, mainly concerned with mean flow variables. Detailed information on the complex turbulent field of these flows is still scarce. In the present paper, high ...
  • Meléndez-Ramírez, Antonio J.; Reyes-Gutiérrez, Miguel A.; Rojas-Solorzano, L. (Proceedings of IMECE2004 2004 ASME International Mechanical Engineering Congress November 13-19, 2004, Anaheim, California, USA, 2004-11-13)
    New data of the experimental performance of a Gas-Liquid Cylindrical Cyclone (GLCC) separator are presented. The data were collected using a 2 3/4” (0.07m) ID GLCC model working with an air-glycerin mixture. The inlet ...
  • Salazar S., Abraham; Rojas-Solorzano, L. (Proceeding of ETCE/OMAE2000 Joint Conference Energy for the New Millenium February 14-17, 2000, New Orleans, LA, 2000-02-14)
    The study of the two-phase flow through the standing and traveling valves used in an oil artificial-lift pumping unit is presented. The investigation aimed to determine the effects the gaseous phase may cause on the pump ...