Guillermo Araya, PhD

Guillermo Araya, PhD

Principal Investigator

High Performance Computing and Visualization Laboratory

Department of Mechanical Engineering

University of Puerto Rico at Mayaguez

Email: j.araya@upr.edu

Research Interests

Computational fluid dynamics of incompressible/compressible boundary layers, turbulence, DNS, LES, RANS, numerical heat transfer, parallel programming, algorithm development, fluid-structure interaction, wind energy, flow/heat transfer control, aerodynamics, atmospheric boundary layer.

 

Education

  •      * Ph.D.(August 2008), Aeronautical Engineering-Rensselaer Polytechnic Institute (RPI), Troy, NY, USA. (GPA: 4:00/4:00)
  • Dissertation: DNS of Turbulent Wall Bounded Flows With a Passive Scalar.
  •      * M.S. (2004)Mechanical Engineering-University of Puerto Rico (UPRM), Mayagüez, PR, USA (GPA: 4:00/4:00)
  • Dissertation: Transient, Three-Dimensional Numerical Model of Laser Cutting Processes in Ceramics with Phase Change Consideration.
  •      * Specialization Course (1997) Specialist in Nuclear Energy Technological Applications-Balseiro Institute and University of Buenos Aires, Argentina.
  •      * B.S.(1996) Aeronautical Engineering-Instituto Universitario Aeronautico, Cordoba, Argentina.
  • Dissertation: Static and Dynamic Stability Analysis of an Air-Ground Missile.

Publications

Journal Articles (* indicates corresponding author)
  • [J21] Araya G.(*) and Rodriguez D., Visualization and assessment of turbulent coherent structures in laminarescent boundary layers. J. of Visualization, 21, pp 191-202, 2017.
  • [J20] Liu C., Araya G.(*) and Leonardi S., The role of vorticity in the turbulent/thermal transport of a channel flow with local blowing, in press, Computers and Fluids, 2017.
  • [J19] Gutierrez W., Araya G., Kiliyanpilakkil V.P., Ruiz-Columbie A., Tutkun M. and Castillo L.(*) Structural impact assessment of Low Level Jets over wind turbines, J. of Renewable and Sustainable Energy, 8, 023308, 2016.
  • [J18] Dharmarathne S., Tutkun M., Araya G., Castillo L.(*), Structures of scalar transport in a turbulent channel, European Journal of Mechanics B-Fluids, Vol. 55, Part 2, pp 259-271, 2016.
  • [J17] Doosttalab A., Araya G.(*), Newman J., Adrian R., Jansen K., Castillo L., Effect of small roughness elements on thermal statistics of a turbulent boundary layer at moderate Reynolds number, J. of Fluid Mechanics, Vol. 787, pp 84 – 115, 2015.
  • [J16] Araya G.(*), Castillo L. and Hussain F., The log behavior of the Reynolds shear stress in accelerating turbulent boundary layers, J. of Fluid Mechanics, Vol. 775, pp 189 – 200, 2015.
  • [J15] Kiliyanpilakkil V. P., Basu(*) S., Ruiz-Columbié A., Araya G., Castillo L., Hirth B., and Burgett W., Buoyancy effects on the scaling characteristics of atmospheric boundary-layer wind fields in the mesoscale range, Phys. Rev. E 92, 033005, 2015.
  • [J14] Bilal M.(*), Araya G., Birkelund Y., Preliminary assessment of remote wind sites, Energy Procedia, Energy Procedia, 75, 658 – 663, 2015.
  • [J13] Cardillo J., Chen Y., Araya G.(*), Newman J., Jansen K. and Castillo L., DNS of turbulent boundary layers with surface roughness, J. of Fluid MechanicsVol. 729, pp 603 – 637, 2013.
  • [J12] Araya G.(*) and Castillo L., DNS of turbulent thermal boundary layers subjected to adverse pressure gradients, Physics of Fluids, 25, 095107, 2013.
  • [J11] Araya G.(*) and Castillo L., DNS of turbulent thermal boundary layers up to Req= 2300, Int. Journal of Heat and Mass Transfer, Volume 55, Issues 15–16, 4003-4019, 2012.
  • [J10] Araya G.(*), Castillo L., Meneveau C. and Jansen K., A dynamic multi-scale approach for turbulent inflow boundary conditions in spatially evolving flows, J. of Fluid MechanicsVol. 670, pp. 581–605, 2011.
  • [J9] Araya G.(*), Leonardi S. and Castillo L., Steady and time-periodic blowing/suction perturbations in a turbulent channel flow, Physica D 240 pp. 59–77, 2011.
  • [J8] Araya G.(*), Jansen K. and Castillo L., Inlet condition generation for spatially-developing turbulent boundary layers via multi-scale similarity, J. of Turbulence, 10, No. 36, pp. 1-33, 2009.
  • [J7] Araya G.(*), Leonardi S. and Castillo L., Numerical assessment of local forcing on the heat transfer in a turbulent channel flow,Physics of Fluids, 20,085105, 2008.
  • [J6] Araya G.(*), Leonardi S. and Castillo L., Passive scalar statistics in a turbulent channel with local time-periodic blowing/suction at walls, Physica D, 237, pp. 2190–2194, 2008.
  • [J5] Wang X.(*), Castillo L. and Araya G., Temperature scalings and profiles in forced convection turbulent boundary layers, Journal of Heat Transfer, Vol.130, 2, 2008.
  • [J4] Araya G.(*), Leonardi S., Castillo L. and Orlandi P., DNS of turbulent channel flow with local forcing at walls,International Journal of Transport Phenomena, Vol. X, pp. 1–13, 2007.
  • [J3] Jia Y.(*) and Araya G., Numerical analysis of the design parameters on the performance of thin film temperature sensors, Measurement Science and Technology, 18, pp. 2268–2274, 2007.
  • [J2] Araya G.(*) and Gutierrez G., Analytical solution for a transient, three-dimensional temperature distribution due to a moving laser beam, Int. Journal of Heat and Mass Transfer, 49 (21-22): 4124-4131, 2006.
  • [J1] Jia Y.(*) and Araya G., Dynamic performanceof thin film temperature sensor in a lubricated contact,Proc. of the Institution of Mechanical Engineers, Part J, Journal of Engineering Tribology, 220 (J6): 487-497, 2006.
Publications in Refereed Chapter Books
  • [B6] Araya G., Castillo L. and Hussain F., DNS of turbulent boundary layers in the quasi-laminarization process, Wall-Turbulence Meeting, Lille, France. ERCOFTAC series, Springer, 2014.
  • [B5] Araya G., Castillo L. and Jansen K., DNS of stable spatially developing turbulent thermal boundary layers under weak stratification, In Progress in Turbulence V, Springer Proceedings in Physics, 2013.
  • [B4] Araya G. and Castillo L., DNS of turbulent boundary layers subjected to adverse pressure gradients, In Progress in Turbulence IV, Springer Proceedings in Physics, 2012.
  • [B3] Araya G., Evans B., Hassan O. and Morgan K., Scale adaptive simulations over a supersonic car, Computational Fluid Dynamics, Springer-Verlag, 2010.
  • [B2] Araya G., Castillo L., Meneveau C. and Jansen, K., A multi-scale dynamic method for spatially evolving flows, Progress in Wall Turbulence: Understanding and Modeling, ERCOFTAC series, Springer, 2009.
  • [B1] Araya G., Bohr E., Jansen K. and Castillo L., Generation of turbulent inlet conditions for velocity/thermal boundary layer simulations, In Progress in Turbulence II, Springer Proceedings in Physics, vol. 109, 2006.
Articles in Refereed Conference Proceedings
  • [C21] Quinones C., Araya G. and Chen Y., Thermal transport in a crossflow jet subject to a very strong favorable pressure gradient. Procs. of ASME 2017 International Mechanical Engineering Congress and Exposition IMECE 2017, November 3-9, 2017, Tampa, USA.
  • [C20] Araya G., Shedding Light into the Quasi-Laminarization Process, 46thAIAA Fluid Dynamics Conference, AIAA AVIATION Forum, (AIAA 2016-3188) 13 – 17 June, Washington, DC, 2016.
  • [C19] Bilal M., Sridhar N., Araya G., Parameswaran S., Birkelund Y., Wind flow over a complex terrain in Nygardsfjell, Norway, Proc. of the ASME 2015 Energy Solutions for a Sustainable Future, June 28-July 2, 2015, San Diego, USA.
  • [C18] Kiliyanpilakkil P., Gutierrez W., Araya G., Basu S., Ruiz-Columbie A., Castillo L., Understanding the Low-level jet characteristics using the WRF model over the West Texas Region, Proc. of the NWRC Summer Research Institute, June-July 2014, Lubbock, Texas, USA.
  • [C17] Gutierrez W., Araya G., Basu S., Ruiz-Columbie A. and Castillo L., Toward Understanding Low Level Jet Climatology over West Texas and its Impact on Wind Energy, Journal of Physics: Conference Series 524 (2014) 012008. doi:10.1088/1742-6596/524/1/012008
  • [C16] Debnath M., Araya G., Castillo L. and Bhaganagar K., Proposing dynamic multiscale method and convective outlet condition in SOWFA, Proc. of the NWRC Summer Research Institute, June-July 2013, Lubbock, Texas, USA.
  • [C15] Araya G.,  Castillo L., Ruiz-Columbie A., Schroeder J. and Basu S., On the similarities of the engineering and atmospheric boundary layers, Proceedings of the 20thSymposium on Boundary Layers and Turbulence, 9-13 July 2012, Boston, MA, USA.
  • [C14] Araya G., Chen Y. and Castillo L., Turbulent thermal boundary layers simulations in rough walls via DNS, 7thInternational Conference on Computational Fluid Dynamics (ICCFD7), Big Island, Hawaii, July 9-13, 2012.
  • [C13] Araya G.and Castillo L., DNS of Thermal Turbulent Boundary Layers Subject to External Pressure Gradient, 6thAIAA Theoretical Fluid Mechanics Conference 27 – 30 June, Honolulu, Hawaii, 2011.
  • [C12] Araya G., Evans B., Hassan O. and Morgan K., Assessment of several turbulence models in a supersonic car, 5thECCOMAS CFD, Lisbon, Portugal, 2010.
  • [C11] Araya G., Cal R.B. and Castillo L., Energy budget analysis for favorable pressure gradient turbulent boundary layers using Direct Numerical Simulations, 8thERCOFTAC Symposium on Eng. Turbulence Modelling and Measurement, Marseille, France, 2010.
  • [C10] Cardillo J., Chen Y., Araya G., Jansen K. and Castillo L., DNS of turbulent boundary layers with surface roughness, 8thERCOFTAC Symposium on Eng. Turbulence Modelling and Measurement, Marseille, France, 2010.
  • [C9] Araya G., Jansen K. and Castillo L., DNS of forced convection turbulent boundary layers in ZPG/APG flows, 5thAIAA Theoretical Fluid Mechanics Conference 23 – 26 June 2008, Seattle, Washington
  • [C8] Araya G., Leonardi S. and Castillo L., DNS of a passive scalar in a turbulent channel with local forcing at walls, 5thInt. Symposium on Turbulence and Shear Flow Phenomena, August 27-29, 2007, Munich, Germany.
  • [C7] Araya G., Leonardi S., Castillo L. and Orlandi P., DNS of turbulent channel flow with local forcing at walls, 17thInt. Symposium on Transport Phenomena, 4-8 September, 2006, Toyama, Japan.
  • [C6] Araya G., Bohr E., Jansen K., Castillo L., and Peterson K.,Generation of turbulent inlet conditions for thermal boundary layers, 44thAIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada, Jan. 9-12, 2006, AIAA-2006-699.
  • [C5] Jia Y. and Araya G., The influence of the design parameters on the performance of thin film temperature sensors, Proceedings of World Tribology Congress III, ASME, September 12-16, 2005, Washington, D.C., USA.
  • [C4] Gutierrez G. and Araya G., Transient, three dimensional numerical model of a laser cutting process with phase change consideration, Proceedings of IMECE:ASME Congress Anaheim, California, November 15-21, 2004.
  • [C3] Gutierrez G. and Araya G., Analytical solution for a transient three-dimensional temperature distribution in laser assisted machining processes, Proceedings of NHTC04: 2004 ASME Summer Conference Charlotte, NC, USA.
  • [C2] Jia Y., Araya G.and Gutierrez G., Numerical analysis of response time for thin film temperature sensors in lubricated contact, Proceedings of NHTC04: 2004 ASME Summer Conference Charlotte, NC, USA.
  • [C1] Gutierrez G. and Araya G., Temperature distribution in a finite solid due to a moving laser beam, Proceedings of IMECE: ASME Congress Washington, D.C., November 15-21, 2003.
Selected Presentations

 

1. DNS of spatially-developing turbulent boundary layers: visualization of turbulent events. Invited Speaker. Barcelona Supercomputing Center, February 23 2017, Barcelona, Spain, 2018.

 

2. Compressibility effect on thermal coherent structures in spatially-developing turbulent boundary layers via DNS, 70thAnnual Meeting, APS Division of Fluid Dynamics, November 2017, Denver, Colorado, USA.

 

3. Effects of wall curvature on hypersonic turbulent spatially-developing boundary layers. Invited Speaker. 2017 Annual Review for the AFOSR High Speed Aerodynamics Portfolio and the ONR Hypersonics Portfolio. July 27 2017, NASA Langley, Hampton, VA.

 

4. DNS of Crossflow Jet Subject to Very Strong Favorable Pressure Gradient. Invited Speaker. Soft Matter Seminar Series. REU Site, July 5 2017, UPRM, Mayaguez, PR.

 

5. The laminarescent region in the quasi-laminarization process: a vorticity dynamics perspective, 69thAnnual Meeting, APS Division of Fluid Dynamics, November 2016, Portland, Oregon, USA.

 

6. Shedding light into the quasi-laminarization process, 46thAIAA Fluid Dynamics Conference, AIAA AVIATION Forum, (AIAA 2016-3188) 13 – 17 June, Washington, DC, 2016.

 

7. The Weather Research and Forecasting (WRF) model for wind energy applications. Invited Speaker. of Mechanical Engineering, University of Puerto Rico at Mayaguez, October 2016, Puerto Rico, USA.

 

8. Assessment of Turbulence Models in the Aerodynamic Design of a Supersonic Car: Breaking the Land Speed World Record. Invited Speaker. of Mechanical Engineering, University of Puerto Rico at Mayaguez, September 2015, Puerto Rico, USA.

 

9. Numerical simulations of turbulent flows: from fundamental knowledge to wind energy applications. Invited Speaker. College of Science and Engineering, Texas A&M University-Corpus Christi, April 2015, Corpus Christi, Texas, USA.

 

10. Drag Reduction Mechanisms in Pipe and Channel Flows. Invited Speaker. of Mechanical Engineering, University of Texas at San Antonio, January 2015, San Antonio, Texas, USA.

 

11. Evolution of the Reynolds shear stresses in highly accelerated turbulent boundary layers, 67thAnnual Meeting, APS Division of Fluid Dynamics, November 2014, San Francisco, California, USA.

 

12. Modelling of low-level jet and katabatic events via WRF and understanding its structural impact on wind turbines. Invited Speaker. Nov. 6 2014, University of Texas at Dallas, USA.

 

13. DNS of Turbulent Boundary Layers in the Quasi-Laminarization Process, Progress in Wall Turbulence: Understanding and Modelling. Lille, France, June 18-20, 2014.

 

14. Spatially-Developing Turbulent Momentum/Thermal Boundary Layers with Adverse Streamwise Pressure Gradients via DNS. Invited Speaker. Turbulence, Mixing and Flow Control seminar series, June 23 2014, Imperial College, London, UK.

 

15. Turbulent thermal boundary layers subjected to severe acceleration, 66thAnnual Meeting, APS Division of Fluid Dynamics, November 2013, Pittsburgh, Pennsylvania, USA.

 

16. Analysis of Low Level Jets (LLJs) and its implications for wind energy, VIII Brazilian Micrometeorology Workshop, November 20-22, 2013 Santa Maria, RS, Brazil.

 

17. Assessment of the Dynamic Multi-scale Approach (DMA) in turbulent momentum/thermal boundary layers subjected to APG. Invited Speaker. Symposium on Frontiers in Fluid Dynamics, November 1-3, 2013, San Juan, Puerto Rico, USA.

 

18. The importance of turbulent inflow conditions on unsteady numerical simulations of spatially-developing boundary layers (DOI: 10.4172/2168-9873.S1.002)Invited Speaker, 137thOMICS Group Conference. International Conference and Exhibition on Mechanical & Aerospace Engineering. September 30 – October 02, 2013 Hilton San Antonio Airport, USA.

 

19. DNS of stratified spatially-developing turbulent thermal boundary layers, 65thAnnual Meeting, APS Division of Fluid Dynamics, November 2012, San Diego, California, USA.

 

20. Numerical research at the National Wind Resource Center. Invited Speaker. Dep. of Aerospace Engineering, Politecnico di Milano, October 2012, Milan, Italy.

 

21. DNS of stable spatially-developing turbulent thermal boundary layers under weak stratification, Conference on Turbulence (iTi 2012), October 2012, Bertinoro, Italy.

 

22. CFD of Turbulent Flows: from Wind Energy Applications to the Aerodynamic Design of a Supersonic Car. Invited Speaker. of Mechanical Engineering, University of Texas at San Antonio, September 2012, San Antonio, Texas, USA.

 

23. On the similarities of the engineering and atmospheric boundary layers, 20thSymposium on Boundary Layers and Turbulence, 9-13 July 2012, Boston, MA, USA.

 

24. Future Experimental Study to Compare the Effects of Two-Bladed and Three-Bladed Model Wind Turbine Designs in an Array, Wind Farms’ Underperformance & Partnerships: Building Partnerships to Meet the 2030 Grand Challenge, March 28 – 29 2012, Lubbock, TX, USA (poster).

 

25. Stable and Unstable Thermal Stratified Boundary Layers, Wind Farms’ Underperformance & Partnerships: Building Partnerships to Meet the 2030 Grand Challenge, March 28 – 29 2012, Lubbock, TX, USA (poster).

 

26. Numerical Tools for Solving Turbulent Wall-Bounded Flows. Invited Speaker. CIMAT, March 2012, Guanajuato, Mexico.

 

27. Computational Fluid Dynamics of Turbulent Wall-Bounded Flows. Invited Speaker. of Mechanical Engineering, Texas Tech University, February 2012, Lubbock, Texas, USA.

 

28. DNS of very strong adverse pressure gradient flows with eventual separation, 64thAnnual Meeting, APS Division of Fluid Dynamics, November 2011, Baltimore, Maryland, USA.

 

29. DNS at High Reynolds numbers of Thermal Turbulent Boundary Layers Subjected to External Pressure Gradients, 64thAnnual Meeting, APS Division of Fluid Dynamics, November 2011, Baltimore, Maryland, USA.

 

30. Numerical simulations of a supersonic car: The Bloodhound Project. Invited Speaker. Portland State University, November 2010, Oregon, USA.

 

31. DNS of turbulent heat transfer in spatially-developing flows. Invited Speaker. Los Alamos National Laboratory, November 2010, New Mexico, USA.

 

32. Unsteady numerical simulations over the BLOODHOUND supersonic car, 63thAnnual Meeting, APS Division of Fluid Dynamics, November 2010, Long Beach, California, USA.

 

33. Scale adaptive simulations over a supersonic car, 6thInternational Conference on CFD, St. Petersburg, Russia, 2010.

 

34. The Use of Turbulence Models in the Aerodynamic Design of A Supersonic Car: Breaking the World Record. Invited Speaker. Rensselaer Polytechnic Institute, November 2009, New York, USA.

 

35. A dynamic multi-scale approach for turbulent inflow generation in spatially-developing boundary layers with streamwise pressure gradients, 61thAnnual Meeting, APS Division of Fluid Dynamics, November 2008, San Antonio, Texas, USA.