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PRESENTATION (I)

THERMAL ENGINEERING AND FLUID FLOW CHAIR ANTONIO ARANZABAL-UNIVERSITY OF NAVARRA FOUNDATION TECNUN – ENGINEERING SCHOOL TECHNOLOGICAL CAMPUS OF THE UNIVERSITY OF NAVARRA. PRESENTATION (I). University of Navarra. TECNUN - Engineering School San Sebastián. Main Campus Pamplona.

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PRESENTATION (I)

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  1. THERMAL ENGINEERING AND FLUID FLOW CHAIRANTONIO ARANZABAL-UNIVERSITY OF NAVARRA FOUNDATIONTECNUN – ENGINEERING SCHOOLTECHNOLOGICAL CAMPUS OF THE UNIVERSITY OF NAVARRA

  2. PRESENTATION (I) University of Navarra TECNUN - Engineering School San Sebastián Main Campus Pamplona IESE (MBA) Barcelona IESE (MBA) Madrid

  3. PRESENTATION (II) • Human Resources: • 2 Main Researchers (Ph. D.). • 5 Research Engineers (Ph. D. students). • Facilities: • Fluid Flow and Heat Transfer Laboratories. • 25 PC network with parallel computing capacity. • 10 PC cluster. • Software: • Fluent, Femlab, Matlab.

  4. RESEARCH LINES AND PROJECTS • Application of CFD and experimental techniques to model and simulate systems involving fluid flow and thermal phenomena. • Applied research projects: • To provide industrial companies with user-oriented simulation tools to solve their problems, and to optimise their processes and products. • Basic research projects: • To study in depth the knowledge basis of fluid flow and thermal phenomena in order to carry out doctoral thesis and to form new researchers.

  5. TURBOMACHINERY DESIGN THROUGH CFD APPLIED TO WATER-METERS Project Data: • Date: 2000-2006. • Sponsor:Basque Government and Elster Iberconta S.A. • Participants: CAA-UN. • Status: In progress. • Publications:G. Sánchez and A. Rivas,Computational Fluid Dynamics approach to the design of a single-jet water-meter, PEDS 2003. • Researchers: A. Rivas and G. Sánchez. General Description and Objectives: Application of CFD techniques to optimise water-meter design.

  6. TURBOMACHINERY DESIGN THROUGH CFD APPLIED TO WATER-METERS • Numerical modelling of a single-jet water-meter: • To study in depth the complex interaction between the turbine and the water flow.

  7. TURBOMACHINERY DESIGN THROUGH CFD APPLIED TO WATER-METERS • Obtained Results: • Flow Characteristics. • Rotational speed of the turbine.

  8. ANALYSIS AND OPTIMIZATION OF THE HYDRAULIC BEHAVIOUR OF FAN SPRAY ATOMIZERS Project Data: • Date: May 2004 - April 2006. • Sponsor:Basque Government and Goizper Soc. Coop. • Participants: CAA-UN and Olaker. • Status: In progress. • Publications: A. Rivas, G. Sánchez, A. Estévez and J. C. Ramos,Improving the design of fan spray atomizers through ComputationalFluid Dynamics techniques,ILASS 2005. • Researchers: A. Rivas, J. C. Ramos, A. Estévez and G. Sánchez. General Description and Objectives: Application of CFD modelling and simulation, and experimental techniques to analyse the influence of atomizer design in the spray characteristics.

  9. ANALYSIS AND OPTIMIZATION OF THE HYDRAULIC BEHAVIOUR OF FAN SPRAY ATOMIZERS • Numerical modelling of internal flow: • To analyse the influence of the atomizer design parameters in the flow pattern, the turbulence, the spray angle and the velocity distribution at the outlet.

  10. ANALYSIS AND OPTIMIZATION OF THE HYDRAULIC BEHAVIOUR OF FAN SPRAY ATOMIZERS • Numerical modelling of the sheet: • To obtain the morphology of the sheet, and the liquid-gas phases interaction that provokes the break-up and the formation of the spray.

  11. ANALYSIS AND OPTIMIZATION OF THE HYDRAULIC BEHAVIOUR OF FAN SPRAY ATOMIZERS • Experimental setup:

  12. ANALYSIS AND OPTIMIZATION OF THE HYDRAULIC BEHAVIOUR OF FAN SPRAY ATOMIZERS • High speed images: • To analyse the development, morphology and break-up mechanisms of the sheet, and the formation of the spray.

  13. ANALYSIS AND OPTIMIZATION OF THE HYDRAULIC BEHAVIOUR OF FAN SPRAY ATOMIZERS • Interferometry images: • To measure the thickness of the sheet.

  14. DEVELOPMENT OF A SIMPLIFIED THERMAL MODEL OF POWER TRANSFORMERS USED IN TRANSFORMER SUBSTATIONS Project Data: • Date: March 2005 - February 2007. • Sponsor: Ormazabal Corporate Technology. • Participants: CAA-UN, ESI Bilbao and Ormazabal. • Status: In progress. • Publications: J. C. Ramos, A. Rivas and J. M. Morcillo,Numerical thermal modelling of the natural ventilation of a half-buried transformer substation using CFD techniques,ICCHMT 2005. • Researchers: J. C. Ramos, A. Rivas and J. Gastelurrutia. General Description and Objectives: Development of a simplified model of a power transformer working inside a substation to predict the hot spot temperature.

  15. DEVELOPMENT OF A SIMPLIFIED THERMAL MODEL OF POWER TRANSFORMERS USED IN TRANSFORMER SUBSTATIONS • In a previous work the substation air flow was modelled to obtain the flow pattern, and the velocity and temperature distributions.

  16. DEVELOPMENT OF A SIMPLIFIED THERMAL MODEL OF POWER TRANSFORMERS USED IN TRANSFORMER SUBSTATIONS • Modelling of the transformer oil flow to obtain the flow pattern, and the velocity and temperature distributions.

  17. DEVELOPMENT OF A SIMPLIFIED THERMAL MODEL OF POWER TRANSFORMERS USED IN TRANSFORMER SUBSTATIONS • Obtaining of the main parameters to develop the simplified model.

  18. FLOW INDUCED NOISE AND VIBRATION MODELLING IN THE TRANSPORTATION INDUSTRY (WINDY) Project Data: • Date: January 2003 - January 2006. • Sponsor: European Union, Eureka Project E!3020. • Participants: LMS International (Belgium), K. U. Leuven (Belgium), Mcube (France), CEIT (Spain) and CAA-UN (Spain). • Status: In progress. • Publications: A. Pradera, A. Rivas, N. Gil-Negrete, J. Viñolas and C. Schram, Numerical Prediction of the Aerodynamic Noise Radiated by a Centrifugal Fan, 12th International Congress on Sound and Vibration, Lisbon, 11-14 July 2005. • Researchers:A. Rivas. General Description and Objectives: Numerical simulation of the interaction between fluid dynamics and acoustics.

  19. FLOW INDUCED NOISE AND VIBRATION MODELLING IN THE TRANSPORTATION INDUSTRY (WINDY)

  20. BEHAVIOUR OF SEVERAL RAILWAY CAB AIR VENTS DESIGNS Project Data: • Date: 2002 -2003. • Sponsor: CAF S. A. • Participants: CAA-UN. • Status: Finished. • Researchers:A. Rivas and G. Sánchez. General Description and Objectives: To analyse the head loss and solid particles retention capacity of several railway cab air vent designs.

  21. BEHAVIOUR OF SEVERAL RAILWAY CAB AIR VENTS DESIGNS

  22. THERMAL MODEL OF AUTOMOTIVE TWIN-TUBE SHOCK ABSORBERS Project Data: • Date: 2002 -2003. • Sponsor: AP Amortiguadores S. A. • Participants: CAA-UN and AP Amortiguadores S. A. • Status: Finished. • Publications: J. C. Ramos, A. Rivas et al.,Development of a thermal model for automotive twin-tube shock absorbers,Applied Thermal Engineering, 25 (2005), 1836-1853. • Researchers: J. C. Ramos and A. Rivas. General Description and Objectives: Simulation of temperature changes over time of shock absorber components during a thermostability test.

  23. THERMAL MODEL OF AUTOMOTIVE TWIN-TUBE SHOCK ABSORBERS

  24. HYDROBUSHING MODELLING Project Data: • Date: 2001 -2002. • Sponsor: CMP S. A. • Participants: CAA-UN and CEIT. • Status: Finished. • Publications: N. Gil-Negrete, A. Rivas and J. Viñolas,Predicting the dynamic behaviour of hydrobushings,Shock and Vibration, 12 (2) 2005, 91-107. • Researchers:A. Rivas. General Description and Objectives: To complete a dynamic model of a hydrobushing in order to analyse the hydraulic characteristics of the channels which are built inside it.

  25. HYDROBUSHING MODELLING • The oil flow through the inertia track is calculated in FLUENT to predict the dynamic stiffness of the hydrobushing.

  26. STUDY OF A HYDROSTATIC BEARING USING CFD TECHNIQUES Project Data: • Date: 2001 -2002. • Sponsor: CAA-UN and Fatronik S. A. • Participants: CAA-UN. • Status: Finished. • Publications: M. Coito, A. Rivas and G. Sánchez,Numerical analysis of a radial hydrostaticbearing using Computational Fluid Dynamic techniques,CMFF 2003. • Researchers:A. Rivas, M. Coito and G. Sánchez. General Description and Objectives: To evaluate the hydrostatic and hydrodynamic forces in a radial hydrostatic bearing taking into account the oil flow and the heat transfer.

  27. STUDY OF A HYDROSTATIC BEARING USING CFD TECHNIQUES

  28. SIMULATION OF THE NATURAL CONVECTION FLOW INSIDE A HEATING SYSTEM OF A RAILWAY CAB Project Data: • Date: 2001 -2002. • Sponsor: CAF S. A. • Participants: CAA-UN. • Status: Finished. • Researchers:A. Rivas and G. Sánchez. General Description and Objectives: To obtain the temperature distribution in the heating system casing of a railway cab by mathematical modelling and simulation of the air flow and the heat transfer (conduction, convection and radiation).

  29. Velocity (m/s) Temperature (ºC) SIMULATION OF THE NATURAL CONVECTION FLOW INSIDE A HEATING SYSTEM OF A RAILWAY CAB

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