Orlando Ayala

Orlando M. Ayala H.

ASSOCIATE PROFESSOR
Engineering Technology

Contact Information

Biography

Dr. Ayala received his BS in Mechanical Engineering with honors (Cum Laude) from Universidad de Oriente (Venezuela) in 1995, MS in Mechanical Engineering in 2001 and PhD in Mechanical Engineering in 2005, both from University of Delaware (USA). Dr. Ayala is currently serving as Assistant Professor of Mechanical Engineering Technology Department, Frank Batten College of Engineering and Technology, Old Dominion University, Norfolk, VA.

Education/Credentials

Web Link(s)

Dr. Ayala's web page

Expertise

Mechanical Engineering

Computational Mechanics

Engineering

I have been directly involved in 20 different engineering projects, most of them related to the petroleum and natural gas industry.

Multiphase flows

Transport of particles in fluid flows

Fluid Diffusion

Solidification of crystals

Heat Transfer

Numerical Modeling

High Performance Parallel Computing and Scientific Computation
Research Interests

Multiphase flows, turbulent flows, transport of particles in fluid flows, compressible flows, heat transfer, numerical modeling, and high performance parallel computing and scientific computation

Articles

Ayala, O. (2017). Estimating collision-coalescence rates from in situ observations of marine stratocumulus. Quarterly J. Roy. Meteorol. Soc

Ayala, O. (2017). Study of the possible fluid-structure interaction vibrations in the exhaust of a gas turbine using Computational Fluid Dynamics (CFD. International Journal of Heat and Fluid Flow

Ayala, O. (2017). Study of Wear in Choke devices used in the Choke Manifold for Cleaning and Evaluation of Wells.. Journal of Petroleum Science and Engineering or Journal Engineering.

Rosa, B., Parishani, H., Ayala, O., and Wang, L. (2016). Settling velocity of small inertial particles in homogeneous isotropic turbulence from high-resolution DNS. International Journal of Multiphase Flow, 83, pp. 217–231.

Wang, L., Ardila, O., Ayala, O., Gao, H., and Peng, C. (2016). Study of Local Turbulence Profiles Relative to the Particle Surface in Particle-Laden Turbulent Flows. ASME JournalofFluidsEngineering, 138, pp. 041203.

Parishani, H., Ayala, O., Rosa, B., Wang, L., and Grabowski, W. (2015). Effects of gravity on the acceleration and pair statistics of inertial particles in homogeneous isotropic turbulence. PHYSICS OF FLUIDS, 27, pp. 033304.

Rosa, B., Parishani, H., Ayala, O., and Wang, L. (2015). Effects of forcing time scale on the simulated turbulent flows and turbulent collision statistics of inertial particles. PHYSICS OF FLUIDS, 27, pp. 015105.

Ayala, O., Parishani, H., Chen, L., Bodgan, R., and Wang, L. (2014). DNS of hydrodynamically interacting droplets in turbulent clouds: parallel implementation and scalability analysis using 2D domain decomposition. Computer Physics Communications, 185, pp. 3269-3290.

Landry, C. J., Karpyn, Z. T., and Ayala, O. (2014). Pore-Scale Lattice Boltzmann Modeling and 4D X-ray ComputedMicrotomography Imaging of Fracture-Matrix Fluid Transfer. TRANSPORT IN POROUS MEDIA, 103 (3), pp. 449-468.

Landry, C. J., Karpyn, Z. T., and Ayala, O. (2014). Relative permeability of homogenous-wet and mixed-wet porous media asdetermined by pore-scale lattice Boltzmann modeling. WATER RESOURCES RESEARCH, 50 (5), pp. 3672-3689.

Wang, L., Ayala, O., Gao, H., Andersen, C., and Mathews, K. L. (2014). Study of forced turbulence and its modulation by finite-size solidparticles using the lattice Boltzmann approach. COMPUTERS & MATHEMATICS WITH APPLICATIONS, 67 (2), pp. 363-380.

Liu, X., Lu, W., Ayala, O., Wang, L., Karlsson, A. M., Yang, Q., and Chou, T. (2013). Microstructural evolution of carbon nanotube fibers: deformation andstrength mechanism. NANOSCALE, 5 (5), pp. 2002-2008.

Wyszogrodzki, A. A., Grabowski, W. W., Wang, L., and Ayala, O. (2013). Turbulent collision-coalescence in maritime shallow convection. ATMOSPHERIC CHEMISTRY AND PHYSICS, 13 (16), pp. 8471-8487.

Torres, C. E., Parishani, H., Ayala, O., Rossi, L. F., and Wang, L. (2013). Analysis and parallel implementation of a forced N-body problem. JOURNAL OF COMPUTATIONAL PHYSICS, 245, pp. 235-258.

Rosa, B., Parishani, H., Ayala, O., Grabowski, W. W., and Wang, L. (2013). Kinematic and dynamic collision statistics of cloud droplets fromhigh-resolution simulations. NEW JOURNAL OF PHYSICS, 15,

Ayala, O., and Wang, L. (2013). Parallel implementation and scalability analysis of 3D Fast FourierTransform using 2D domain decomposition. PARALLEL COMPUTING, 39 (1), pp. 58-77.

Ayala, O., Rosa, B., Wang, L., and Grabowski, W. W. (2008). Effects of turbulence on the geometric collision rate of sedimentingdroplets. Part 1. Results from direct numerical simulation. NEW JOURNAL OF PHYSICS, 10,

Ayala, O., Rosa, B., and Wang, L. (2008). Effects of turbulence on the geometric collision rate of sedimentingdroplets. Part 2. Theory and parameterization. NEW JOURNAL OF PHYSICS, 10,

Wang, L., Ayala, O., Rosa, B., and Grabowski, W. W. (2008). Turbulent collision efficiency of heavy particles relevant to clouddroplets. NEW JOURNAL OF PHYSICS, 10,

Wang, L., Ayala, O., and Grabowski, W. W. (2007). Effects of aerodynamic interactions on the motion of heavy particles ina bidisperse suspension. JOURNAL OF TURBULENCE, 8 (25), pp. 1-28.

Ayala, O., Grabowski, W. W., and Wang, L. (2007). A hybrid approach for simulating turbulent collisions ofhydrodynamically-interacting particles. JOURNAL OF COMPUTATIONAL PHYSICS, 225 (1), pp. 51-73.

Ayala, O. (2007). Multi-phase Flow Analysis in Oil and Gas Engineering Systems and its Modeling. Hydrocarbon World 2007 pp. 57-61.

Wang, L., Xue, Y., Ayala, O., and Grabowski, W. W. (2006). Effects of stochastic coalescence and air turbulence on the sizedistribution of cloud droplets. ATMOSPHERIC RESEARCH, 82 (1-2, SI), pp. 416-432.

Wang, L., Ayala, O., Xue, Y., and Grabowski, W. W. (2006). Comments on “Droplets to drops by turbulent coagulation”. JOURNAL OF THE ATMOSPHERIC SCIENCES, 63 (9), pp. 2397-2401.

Wang, L., Franklin, C., Ayala, O., and Grabowski, W. (2006). Probability distributions of angle of approach and relative velocity forcolliding droplets in a turbulent flow. JOURNAL OF THE ATMOSPHERIC SCIENCES, 63 (3), pp. 881-900.

Troyani, N., Montano, L., and Ayala, O. (2005). Numerical modelling of thermal evolution in hot metal coiling. REVISTA DE METALURGIA (SI), pp. 488-492.

Wang, L., Ayala, O., Kasprzak, S., and Grabowski, W. (2005). Theoretical formulation of collision rate and collision efficiency ofhydrodynamically interacting cloud droplets in turbulent atmosphere. JOURNAL OF THE ATMOSPHERIC SCIENCES, 62 (7, 2), pp. 2433-2450.

Wang, L., Ayala, O., and Xue, Y. (2005). Reconciling the cylindrical formulation with the spherical formulationin the kinematic descriptions of collision kernel. PHYSICS OF FLUIDS, 17 (6),

Wang, L., Ayala, O., and Grabowski, W. (2005). Improved formulations of the superposition method. JOURNAL OF THE ATMOSPHERIC SCIENCES, 62 (4), pp. 1255-1266.
Conference Proceeding

Ayala, O., Popescu, O., and Jovanovic, V. (2017). Flipped classroom as blended learning in a fluid mechanics course in engineering technology.. ASEE Annual Conference and Exposition.

Ringleb, S. I., Ayala, O., and Kidd, J. (2017). Implementing peer-review activities for engineering writing assignments.. ASEE Annual Conference and Exposition.

Hou, G. J., Zhong, F., and Ayala, O. (2017). Manual revision process for project-based laboratory instruction.. ASEE Annual Conference and Exposition.

Rohith, M., Parishani, H., Ayala, O., Wang, L., and Kambhamettu, C. (2011). CollisionExplorer: a tool for visualizing droplet collisions in a turbulent flow. ,International Symposium on Visual Computing (pp. 669–680)

Rosa, B., Parishani, H., Ayala, O., Wang, L., and Grabowski, W. W. (2011). High-resolution simulation of turbulent collision of cloud droplets. ,International Conference on Parallel Processing and Applied Mathematics (pp. 401–410)

Rosa, B., Parishani, H., Ayala, O., Wang, L., and Grabowski, W. W. (2011). Kinematic and dynamic pair collision statistics of sedimenting inertial particles relevant to warm rain initiation. ,Journal of Physics: Conference Series (pp. 072016)

Ayala, O., Andersen, C., Parishani, H., and Wang, L. (2011). Methods and issues for highly-scalable simulation of isotropic homogeneous turbulence. ,APS Meeting Abstracts

Wang, L., Ayala, O., Parishani, H., Grabowski, W. W., Wyszogrodzki, A. A., Piotrowski, Z., Gao, G. R., Kambhamettu, C., Li, X., Rossi, L., Orozco, D., and Torres, C. (2011). Towards an integrated multiscale simulation of turbulent clouds onPetaScale computers. In Bajer, K; Kopec, J; Kursa, M; Kwiatkowski, K; Podziemski, P (Ed.) ,13TH EUROPEAN TURBULENCE CONFERENCE (ETC13): GEOPHYSICAL ANDMAGNETOHYDRODYNAMIC TURBULENCE. DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND: IOP PUBLISHING LTD. doi:10.1088/1742-6596/318/7/072021
Presentations

Witte, M., Chuang, P., Rossiter, D., Ayala, O., and Wang, L. (November, 2015). Constraining precipitation initiation in marine stratocumulus using aircraft observations and LES with high spectral resolution bin microphysics Oral Presentation presented at 48th annual Fall Meeting San Francisco, CA.

Banerjee, S., Ayala, O., and Wang, L. (November, 2015). Collision statistics of inertial particles suspended in turbulent flows of low dissipation rates Oral Presentation presented at 68th Annual Meeting of APS Division of Fluid Dynamics Boston, MA.

, M. W., Chuang, P., Wang, L., and Ayala, O. (December, 2014). What controls drizzle initiation? Insights from a comparison of large-eddy simulations with observations Oral Presentation presented at American Geophysical Union’s 47th annual Fall Meeting San Francisco, CA.

Wang, L., Castro, O., and Ayala, O. (August 6, 2014). Study of Turbulence Modulation by Finite-Size Solid Particles using the Lattice Boltzmann Approach Oral Presentation presented at 4th Joint US-European Fluids Engineering Summer Meeting Chicago, Illinois, USA.

Wang, L., Castro, O., and Ayala, O. (August 3, 2014). Study of turbulence modulation by finite-size solid particles using the lattice Boltzmann method Oral Presentation presented at ASME 2014 Fluids Engineering Summer Meeting Chicago, Illinois, USA.

Witte, M., Chuang, P., Wang, L., and Ayala, O. (July 7, 2014). Applying an inverse method to estimate collision-coalescence rates from aircraft observations Oral Presentation presented at 14th Conference on Cloud Physics Boston, Massachusetts, USA.

Rosa, B., Parishani, H., Ayala, O., Grabowsky, W., and Wang, L. (July 7, 2014). Kinematic and dynamic collision statistics of cloud droplets from high-resolution simulations Oral Presentation presented at 14th Conference on Cloud Physics Boston, Massachusetts, USA.

Rosa, B., Parishani, H., Ayala, O., and Wang, L. (July 7, 2014). Settling velocity of cloud droplets in homogenous isotropic turbulence from high-resolution simulations Poster presented at 14th Conference on Cloud Physics Boston, Massachusetts, USA.

Parishani, H., Ayala, O., Rosa, B., and Wang, L. (November 24, 2013). Numerical Investigation of Cloud Droplet Growth via Collision Coalescence: One Step Approach Oral Presentation presented at 66th Annual Meeting of APS Division of Fluid Dynamics Pittsburgh, Pennsylvania, USA.

Castro, O., Ayala, O., and Wang, L. (November 24, 2013). Study of local profiles relative to the particle surface in a forced particle-laden turbulent flow Oral Presentation presented at 66th Annual Meeting of APS Division of Fluid Dynamics Pittsburgh, Pennsylvania, USA.

Peng, C., Castro, O., Ayala, O., and Wang, L. (November 24, 2013). Two-way interactions in particle-laden turbulent channel flow Oral Presentation presented at 66th Annual Meeting of APS Division of Fluid Dynamics Pittsburgh, Pennsylvania, USA.

Rosa, B., Ayala, O., Parishani, H., and Wang, L. (September 1, 2013). Settling Velocity of Small Particles in High-Resolution Homogeneous Isotropic Turbulence Oral Presentation presented at 14th European Turbulence Conference Lyon, France.

Rosa, B., Parishani, H., Ayala, O., and Wang, L. (July 1, 2013). Settling velocity of small particles in high-resolution homogenous isotropic turbulence Oral Presentation presented at International Conference on Fundamentals, Experiments, Numeric and Applications Eindhoven, Netherlands.

Parishani, H., Ayala, O., and Wang, L. (May 26, 2013). Effects of gravity on inertial-particle acceleration and radial relative velocity in homogeneous isotropic turbulence Oral Presentation presented at The 8th International Conference on Multiphase Flow (ICMF) Jeju, Korea.

Rosa, B., Parishani, H., Ayala, O., and Wang, L. (May 26, 2013). Effects of time scale in the large-scale forcing scheme on the simulated turbulent flows and on the collision statistics of inertial particles Oral Presentation presented at The 8th International Conference on Multiphase Flow (ICMF) Jeju, Korea.

Onishi, R., Rosa, B., Ayala, O., Wang, L., and Takahashi, K. (May 26, 2013). Efficient Numerical Simulation for Full-Range Hydrodynamic Interactions among Cloud Droplets in Isotropic Turbulence Oral Presentation presented at The 8th International Conference on Multiphase Flow (ICMF) Jeju, Korea.

2017: Certificate of Excellence in Undergraduate Research
2017: Faculty Development Institute (FDI): Travel Award., 1. Society of Hispanic Professional Engineers (SHPE) Conference
2016: Certificate for Highly Cited Research in Parallel Computing
2015: Certificate of Outstanding Contribution in Reviewing, Journal of Natural Gas Science and Engineering
2014: Travel Award, The Eleventh International Conference for Mesoscopic Methods in Engineering and Science
2013: Certificate of Excellence in Reviewing, Journal of Natural Gas Science and Engineering
2008: Fellowship. Level II Category, Venezuelan Foundation for Promotion of Researchers (PPI)
2006: Fellowship. Level I Category, Venezuelan Foundation for Promotion of Researchers (PPI)
2006: Stimulus to the Researcher Award (PEI), Universidad de Oriente, Venezuela
2005: Nominated to the Teaching Excellence Award , University of Delaware
2003: Fellowship. Begineer Category, Venezuelan Foundation for Promotion of Researchers (PPI)
2000: Academic Merit Award , CONABA, Venezuela
1999: 7. Nominated to receive the George W. Laird Merit Fellowship for graduate students from the School of Engineering, University of Delaware

Contracts, Grants and Sponsored Research

Ayala, O. "Rigorous Study Pipeline Erosion in Bends Focused on Fluid-Particle Interaction" $70,000. Other. July 1, 2017 - August 31, 2020

Ayala, O. "Revisiting the design of elbow configurations to reduce erosion based on the study of particle-fluid interaction dynamics" $10,000. Old Dominion University. January, 2016 - December, 2016

Ayala, O.; Seek, M.; Marsillac, S. "ODU&TCC Photovoltaic Training/Research Facility" $33,162. Private. October 01, 2014 - September 30, 2016

Seek, M.; Ayala, O.; Marsillac, S. "ODU-TCC Virginia Beach Photovoltaic Facility" $100,000. Private. August 1, 2014 - July 31, 2016

, "A study on In-Cylinder Air Dispersion Utilizing Turbulence Inducers Forward of Intake Valves on a Four Cylinder Spark Ignition Engine" $1,500. Old Dominion University. September, 2015 - December, 2015

Michaeli, J.; Ayala, O.; Bawab, S. "Exploration of Additive Manufacturing for Naval Applications" $150,000. Federal. September 15, 2014 - September 15, 2015

Wang, L.; Ayala, O.; Li, X. "Bridging Particle-Resolved and Point-Particle Based Simulation for Turbulent Particle-Laden Flow Using New Heterogeneous High-Performance Computer" $359,861. Federal. September 1, 2013 - August 31, 2015

Ayala, O. "2015 Summer Research Program for 7 Brazilian Students on Research Activities" $49,833. Other. May 18, 2015 - August 07, 2015

Ayala, O. "Lattice Boltzmann Method Simulation For 3D Crystal Growth" $2,500. Old Dominion University. May, 2015 - July, 2015

Seek, M.; Ayala, O.; Marsillac, S.; Jovanovic, V.; Marsillac, E. "Advanced Single Axis Solar Tracking System for Enhanced Energy Generation" $25,000. State. August 1, 2014 - July 31, 2015

Chezan, L.; Ayala, O.; Popescu, O.; Nikolic, M. "Critical Thinking: Beyond Theoretical Knowledge" $2,000. Old Dominion University. August 1, 2014 - July 31, 2015

Ayala, O. "Travel to ASME Workshops " $1,983. Old Dominion University. March, 2014 - July, 2014

Ayala, O.; Wang, L. "Computing Resources Request for “Turbulent Collision Statistics of Hydrodynamically Interacting Droplets Simulated by a Multiscale Approach” " . Federal. April 1, 2013 - March 21, 2014

Old Dominion University

Idea Fusion

Orlando M. Ayala H.

Orlando M. Ayala H.

Contact Information

Organizational Chart

Biography

Education/Credentials

Web Link(s)

Expertise

Research Interests

Articles

Conference Proceeding

Presentations

Contracts, Grants and Sponsored Research