We consider a linearised model of incompressible inviscid flow. Using a regularisation based on the Hodge Laplacian we prove existence and uniqueness of weak solutions for smooth domains. The model problem is then discretised using H(div)-conforming finite element methods, for which we prove error estimates for the velocity approximation in the L2-norm of order O(hk+1/2). We also prove error estimates for the pressure error in the L2-norm.
|Number of pages||19|
|Journal||Mathematical Models and Methods in Applied Sciences|
|Early online date||23 Apr 2020|
|Publication status||Published - 31 May 2020|
- inviscid flows
- error estimates
- H(div) conforming finite elements