Jeffrey HeysAssistant Professor
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Research Interests
- The effects of variable permeability on the resistance to flow through the trabecular meshwork of the eye.
- Using the higher-order finite elements and the spectral element methods to predict particle deposition in the human airways
- The modeling of biological systems in which there is a mechanical coupling between a moving fluid and tissues. Specifically, the interaction between the aqueous humor and the iris in the eye, and the mechanical interaction between blood and compliant vessel walls.
- Using a first-order system least-squares (FOSLS) and algebraic multigrid (AMG) to solve the Navier-Stokes equations.
- I've developed a parallel, least-squares finite element code that uses higher-order finite elements and "hypre" by LLNL to solve the linear system.
- Group
website
Background
- B.S. in Chemical Engineering from Montana State University
- M.S. and Ph.D. in Chemical Engineering from the University of Colorado at Boulder
- Postdoc in Applied Mathematics at the University of Colorado at Boulder
- A semi-current CV
Publications
- Heys, J.J., B. Knott, T. Gedeon, and Y. Kim, “Modeling Arthropod Filiform Hair Motion using the Penalty Immersed Boundary Method.” J. Biomech Eng., accepted
- Stukel, J.M., J.J. Heys, and M.R. Caplan, “Optimizing Delivery of Multivalent Constructs for Detection of Secondary Tumors.” Ann. Biomed. Eng., accepted
- Heys J.J., “Group Projects in Chemical Engineering Using a Wiki.”, Chem. Eng. Ed., accepted
- Merchant, B.M., J.J. Heys, “Effects of Variable Permeability on Aqueous Humor Outflow.” Appl. Comp. Math., accepted
- Heys, J.J., E. Lee, T.A. Manteuffel, and S.F. McCormick, (2007) “An Alternative Least-Squares Formulation of the Navier-Stokes Equations with Improved Mass Conservation.”, J. Comp. Physics, 226:994-1006
- Heys, J.J., E. Lee, T.A. Manteuffel, and S.F. McCormick, (2006) “On Mass-Conserving Least-Squares Methods.” SIAM J. Sci. Comput., 28(5) 1675-1693
- De Sterck, H., U. M. Yang, and J.J. Heys, (2006) "Reducing Complexity in Parallel Algebraic Multigrid Preconditioners." SIAM J. Matrix Anal., 27: 1019 - 1039
- Heys, J.J., C.G. DeGroff, T.A. Manteuffel, and S.F. McCormick, (2006) “First-Order System Least Squares (FOSLS) for Modeling Blood Flow.”Medical Eng. & Physics, 28(6): 495-503
- Heys, J.J., T.A. Manteuffel, S.F. McCormick, and L.N. Olson, (2005) “Algebraic Multigrid (AMG) for Higher-Order Finite Elements.” J. Comp. Physics, 204: 520-532
- Heys, J.J., T.A. Manteuffel, S.F. McCormick, and J.W. Ruge, (2004) “First-Order System Least Squares (FOSLS) for Coupled Fluid-Elastic Problems.” J. Comp. Physics, 195(2): 560-575
- Heys, J.J., C.G. DeGroff, W.W. Orlando, T.M. Manteuffel, and S.F. McCormick, (2002) “First-order system least squares for elastohydrodynamics with application to flow in compliant blood vessels.” Biomed. Sci. Instr., 38:277-282.
- Heys, J.J. and V.H. Barocas, (2002), "A Boussinesq Model of Natural Convection in the Human Eye and the Formation of Krukenberg's Spindle.", Ann. Biomed. Eng. , 30:392-401.
- Heys, J.J. and V.H. Barocas, (2002), "Computational Evaluation of the Role of Accommodation in Pigmentary Glaucoma.", Inv. Opthalmol. Vis. Sci., 43(3): 700-708.
- Heys, J., V.H. Barocas, and M.J. Taravella (2001), "Modeling Passive Mechanical Interaction between the Aqueous Humor and Iris." J. Biomech. E., 123(6): 540-547.
- Xu, J., J.J. Heys, V. H. Barocas, and T.W. Randolph (1999), "Permeability and Diffusion in Vitreous Humor: Implications for Drug Delivery." Pharmaceut. Res., 17(6): 664-669.
- Heys, J. and V.H. Barocas (1998), "Mechanical Characterization of the Bovine Iris." J. Biomech. 32: 999-1003.
