J. Thomas Beale, Professor
Here are two recent papers: J. T. Beale, W. Ying, and J. R. Wilson, A simple method for computing singular or nearly singular integrals on closed surfaces, submitted to Comm. Comput. Phys., arxiv.org/abs/1508.00265 J. T. Beale, Uniform error estimates for NavierStokes flow with an exact moving boundary using the immersed interface method, to appear in SIAM J. Numer. Anal., arxiv.org/abs/1503.05810
Much of my work has to do with incompressible fluid flow, especially qualitative properties of solutions and behavior of numerical methods, using analytical tools of partial differential equations. My research of the last few years has the dual goals of designing numerical methods for problems with interfaces, especially moving interfaces in fluid flow, and the analysis of errors in computational methods of this type. We have developed a general method for the numerical computation of singular or nearly singular integrals, such as layer potentials on a curve or surface, evaluated at a point on the curve or surface or nearby, in work with M.C. Lai, A. Layton, S. Tlupova, and W. Ying. After regularizing the integrand, a standard quadrature is used, and corrections are added which are determined analytically. Current work with coworkers is intended to make these methods more practical, especially in three dimensional simulations. Some projects (partly with Anita Layton) concern the design of numerical methods which combine finite difference methods with separate computations on interfaces. We developed a relatively simple approach for computing NavierStokes flow with an elastic interface. In analytical work we have derived estimates in maximum norm for elliptic (steadystate) and parabolic (diffusive) partial differential equations. For problems with interfaces, maximum norm estimates are more informative than the usual ones in the L^2 sense. More general estimates were proved by Michael Pruitt in his Ph.D. thesis.  Contact Info:
Office Location:  217 Physics Bldg, Durham, NC 277080320  Email Address:   Teaching (Fall 2015):
 MATH 653.01, ELLIPTIC PDE
Synopsis
 Physics 047, TuTh 10:05 AM11:20 AM
Teaching (Spring 2016):
 MATH 557.01, INTRODUCTION TO PDE
Synopsis
 Physics 227, TuTh 11:45 AM01:00 PM
 Office Hours:
 Monday 2:304:00, Friday 2:003:00, and by appointment
 Education:
Ph.D.  Stanford University  1973 
M.S.  Stanford University  1969 
B.S.  California Institute of Technology  1967 
 Specialties:

Analysis
Applied Math
 Research Interests: Partial Differential Equations, Fluid Mechanics, Numerical Methods
Much of my work has to do with incompressible fluid flow, especially qualitative properties of solutions and behavior of numerical methods, using analytical tools of partial differential equations.
My research of the last few years has the dual goals of designing numerical methods for
problems with interfaces, especially moving interfaces in fluid flow, and the analysis
of errors in computational methods of this type.
We have developed a general method for the numerical computation of singular or nearly singular integrals, such as layer potentials on a curve or surface, evaluated at a point on the curve or surface or nearby,
in work with M.C. Lai, A. Layton, S. Tlupova, and W. Ying.
After regularizing the integrand, a standard quadrature is used, and corrections are added
which are determined analytically. Current work with coworkers is intended
to make these methods more practical, especially in three dimensional simulations. Some projects
(partly with Anita Layton) concern the design of numerical methods which combine finite difference
methods with separate computations on interfaces. We developed a relatively simple
approach for computing NavierStokes flow with an elastic interface.
In analytical work we have derived estimates
in maximum norm for elliptic (steadystate) and parabolic (diffusive)
partial differential equations. For problems with interfaces, maximum norm estimates are more
informative than the usual ones in the L^2 sense. More general estimates were
proved by Michael Pruitt in his Ph.D. thesis.
 Keywords:
Differential equations, Partial • Fluid mechanics • Fluidstructure interaction • Numerical analysis
 Curriculum Vitae
 Current Ph.D. Students
(Former Students)
 Representative Publications
(More Publications)
 J. t. Beale, W. YIng, and J. R. Wilson, A simple method for computing singular or nearly singular integrals on closed surfaces,
Commun. Comput. Phys.
(Submitted, August, 2015) [pdf]
 Recent Grant Support
 Development and Analysis of Numerical Methods for Fluid Interfaces, National Science Foundation, 2013/082016/07.
