Dr. Orlando Ayala

Old Dominion University, USA

Email: oayala@odu.edu

Qualifications

2005  Ph.D., University of Delaware, USA

2001  M.Sc., University of Delaware, USA

1995  B.Sc., Universidad de Oriente, Venezuela

Publications (Selected)

1. A. Wyszogrodzki, W. Grabowski, L.-P. Wang, and O. Ayala. 2013. Turbulent collisioncoalescence in maritime shallow convection. Atmospheric Chemistry and Physics. 13, 8471- 8487.
2. L.-P. Wang, O. Ayala, H. Gao, C. Andersen, K. Mathews. 2013, Study of forced turbulence and its modulation by finite-size solid particles using the Lattice Boltzmann approach, Computers & Mathematics with Applications.
3. Rosa B, Parishani H, Ayala O, Grabowski WW, Wang, L-P. 2013. Kinematic and dynamic collision statistics of cloud droplets from high-resolution simulations, New Journal of Physics. 15, 045032
4. X. Liu, W. Lu, O. Ayala, L.-P. Wang, A.M. Karlsson, Q. Yang, T.-W. Chou, 2013
5. Microstructural evolution of carbon nanotube fibers: deformation and strength mechanism, Nanoscale. DOI: 10.1039/c3nr32681k.
6. C. E. Torres, H. Parishani, O. Ayala, L. Rossi, L.-P. Wang, 2013, Analysis and scaled implementation of the “improved superposition method” of hydrodynamic interaction of cloud droplets, J. Comp. Physics, doi: http://dx.doi.org/ 10.1016/j.jcp.2013.03.008.
7. O. Ayala, and L.P. Wang, 2013, Parallel implementation and scalability analysis of 3D fast Fourier transform using 2D domain decomposition,Parallel Computing. 39, 58-77.
8. Rosa B, Parishani H, Ayala O, Wang, L-P, Grabowski WW. 2012. High-resolution simulation of turbulent collision of cloud droplets. PPAM2011, PartII, Lecture Notes in Computer Science Vol. 7204, 401-410.
9. B. Rosa, H. Parishani, O. Ayala, L.-P. Wang and W. W. Grabowski, 2011, Kinematic and dynamic pair collision statistics of sedimenting inertial particles relevant to warm rain initiation, J. Phys.: Conf. Ser. 318, 072016. doi:10.1088/1742-6596/318/7/072016.
10. L.-P. Wang, O. Ayala, H. Parishani, W. W. Grabowski, A. A. Wyszogrodzki, Z. Piotrowski, G. R. Gao, C. Kambhamettu, X. Li, L. Rossi, D. Orozco and C. Torres, 2011, Towards an integrated multiscale simulation of turbulent clouds on PetaScale computers, J. Phys.: Conf. Ser. 318, 072021. doi:10.1088/1742-6596/318/7/072021.
11. R. Mv, H. Parishani, O. Ayala, L.-P. Wang, C. Kambhamettu, 2011, CollisionExplorer: A tool for visualizing droplet collisions in a turbulent flow.Int. Symp. on Visual Computing (ISVC) 2011, G. Bebis et al. (Eds.), Part II, LNCS 6939, pp. 669-680, Springer-Verlag Berlin Heidelberg.
12. L.-P. Wang, O. Ayala, B. Rosa, W.W. Grabowski, 2008 "Turbulent collision efficiency of heavy particles relevant to cloud droplets." New J. Physics (Focus issue on cloud physics), 10,075013.
13. O. Ayala, B. Rosa, L.-P. Wang, W.W. Grabowski, 2008 "Effects of Turbulence on the Geometric Collision Rate of Sedimenting Droplets: Part 1. Results from direct numerical simulation" New J. Physics (Focus issue on cloud physics), 10, 075015.
14. O. Ayala, B. Rosa, L.-P. Wang, W.W. Grabowski, 2008 "Effects of Turbulence on the Geometric Collision Rate of Sedimenting Droplets: Part 2. Theory and Parameterization." New J. Physics (Focus issue on cloud physics), 10, 075016.
15. O.F. Ayala, L.F. Ayala, O. Ayala, “Multi-phase Flow Analysis in Oil and Gas Engineering Systems and its Modeling”, Hydrocarbon World 2007ISSN: 1753-3899, p. 57-61, Touch Briefings Ltd., London, UK, July 2007.
16. O. Ayala, L.-P. Wang, and W.W. Grabowski, 2007, “A hybrid approach for simulating turbulent collisions of hydrodynamically-interacting particles,” Journal of Computational Physics. doi:10.1016/j.jcp.2006.11.016.
17. L.-P. Wang, O. Ayala, and W.W. Grabowski, 2007, “Effects of aerodynamic interactions on the motion of heavy particles in a bidisperse suspension,” J. of Turbulence, Vol. 8.1., 1-28. DOI: 10.1080/14685240701233426.
18. L.-P. Wang, O. Ayala, Y. Xue, and W.W. Grabowski, 2006, Comments on "Droplets to Drops by Turbulent Coagulation,” J. of the Atmospheric Sciences, 63 (9): 2397-2401.
19. L.-P. Wang, Y. Xue, O. Ayala, and W.W. Grabowski, 2006, “Effects of stochastic coalescence and air turbulence on the size distribution of cloud droplets,” Atmospheric Research, 82 (1-2): 416-432.
20. L.-P. Wang, C.N. Franklin, O. Ayala, W.W. Grabowski, 2006, “On probability distributions of angle-of-approach and relative velocity for colliding droplets in a turbulent flow,” J. of the Atmospheric Sciences, Vol. 63 (3), pages 881 - 900.
21. N. Troyani, L.E. Montano, O. Ayala, 2005 “Numerical Modelling of Thermal Evolution in hot Metal Coiling”, Revista de Metalúrgica, Edición Especial SI. 488-492.
22. L.-P. Wang, O. Ayala, Y. Xue, 2005, “Reconciling the cylindrical formulation with the spherical formulation in the kinematic descriptions of collision kernel,” Physics of Fluids, Vol 17, No. 6, Art. No. 067103.
23. L.-P. Wang, O. Ayala, S.E. Kasprzak, and W.W. Grabowski, 2005, “Theoretical formulation of collision rate and collision efficiency of hydrodynamically-interacting cloud droplets in turbulent atmosphere,” J. of the Atmospheric Sciences, Vol. 62, No. 7, Part 2, pages 2433-2450
24. L.-P. Wang, O. Ayala, and W.W. Grabowski, 2005, “Improved formulations of the superposition method,” J. of the Atmospheric Sciences, Vol. 62, No. 4, pages 1255-1266.