analyticalVelocity.m carMesh.mat carVelocity.m cerclep02R5.mat createReferenceElement.m dampingMatrix.m forceVector.m getBoundary.m HelmholtzMatrices.m incidentPotential.m main.asv main.m NRBMatrix.m plotMesh.m plotSolution.m rectangleMesh.m reflectingVector.m twoRoomsMesh0p02.mat