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Our aim is to study the limit of the solution of reaction-diffusion porousmedium equation with linear drift $\displaystyle\partial_t u -\Delta u^m+\nabla \cdot (u \: V)=g(t,x,u) $, as $m\to\infty.$ We study the problem inbounded domain $\Omega$ with Dirichlet boundary condition, compatible initialdata ; i.e. $\vert u_0\vert \leq 1,$ and an outpointing vector field $V$ on theboundary $\partial \Omega.$ In particular, by means of new $BV_{loc}$estimates, we show uniform $L^1-$convergence towards the solution ofreaction-diffusion Hele-Shaw flow with linear drift.

$L^1-$Theory for Incompressible Limit of Reaction-Diffusion Porous Medium Flow with Linear Drift