Coupled multicomponent two-phase flow and geomechanical modeling for hydrogen storage in an anticline aquifer with N <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si267.svg" display="inline" id="d1e1753"> <mml:msub> <mml:mrow/> <mml:mrow> <mml:mn>2</mml:mn> </mml:mrow> </mml:msub> </mml:math> cushion gas injection