Special Session 95: The Euler Water Wave Problem

Rational approximation and branch cuts for standing water waves
Jon A Wilkening
UC Berkeley
USA
Co-Author(s):    Ahmad Abassi
Abstract:
We compute arbitrary-order asymptotic expansions of standing water waves, generalizing the conformal mapping framework of Schwartz and Whitney (1981) to handle finite-depth domains and/or surface tension effects. The calculations are performed in arbitrary precision with up to 3000 bits using MPFR and parallelized to run on a supercomputer. We explore Pade approximations of the expansions and observe branch cuts that leave gaps in the families of solutions. We also explore analytic continuation of standing waves into the upper half-plane and observe branch cuts there as well.