文摘
In this paper we study the a priori error estimates of finite element method for the system of time-dependent Poisson–Nernst–Planck equations, and for the first time, we obtain its optimal error estimates in class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0377042716300073&_mathId=si25.gif&_user=111111111&_pii=S0377042716300073&_rdoc=1&_issn=03770427&md5=b03b3a69b0a06d852e05e2eac4fe28ff" title="Click to view the MathML source">L∞(H1)class="mathContainer hidden">class="mathCode"> and class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0377042716300073&_mathId=si26.gif&_user=111111111&_pii=S0377042716300073&_rdoc=1&_issn=03770427&md5=d8ef3951c8090d99696569f5f9124143" title="Click to view the MathML source">L2(H1)class="mathContainer hidden">class="mathCode"> norms, and suboptimal error estimates in class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0377042716300073&_mathId=si27.gif&_user=111111111&_pii=S0377042716300073&_rdoc=1&_issn=03770427&md5=f7b91efc26a83b2d7811a4d3ce2e5486" title="Click to view the MathML source">L∞(L2)class="mathContainer hidden">class="mathCode"> norm, with linear element, and optimal error estimates in class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0377042716300073&_mathId=si27.gif&_user=111111111&_pii=S0377042716300073&_rdoc=1&_issn=03770427&md5=f7b91efc26a83b2d7811a4d3ce2e5486" title="Click to view the MathML source">L∞(L2)class="mathContainer hidden">class="mathCode"> norm with quadratic or higher-order element, for both semi- and fully discrete finite element approximations. Numerical experiments are also given to validate the theoretical results.