An evaporator assembly including: a header that defines an outlet port ; an evaporator body that defines an evaporator passage in fluid communication with the outlet port; an swirl generator for the evaporator, comprising: a swirl generator body that extends along a body-center axis between opposing inlet and outlet ends , the swirl generator body including a fluid inlet at the inlet end, wherein the swirl generator body includes an outer surface that, at the outlet end, defines an outlet region that includes a curved outer boundary that forms a convex curve that extends radially inward from an outer diameter surface of the body to an outer axial surface of the body; a center passage formed within the swirl generator body that extends from the inlet towards the outlet along the body-center axis; and a swirl passage formed at the outlet end of the swirl generator body, the swirl passage extending between the center passage and the curved outer boundary along a swirl passage axis such that a fluid entering the center passage from the inlet end exits the swirl generator body at the curved outer boundary, wherein the swirl passage axis forms an acute angle with the body-center axis, wherein the curved outer boundary of the swirl generator body is adjacent to and at least partially faces a sidewall of the evaporator passage. a header that defines an outlet port ; an evaporator body that defines an evaporator passage in fluid communication with the outlet port; an swirl generator for the evaporator, comprising: a swirl generator body that extends along a body-center axis between opposing inlet and outlet ends , the swirl generator body including a fluid inlet at the inlet end, wherein the swirl generator body includes an outer surface that, at the outlet end, defines an outlet region that includes a curved outer boundary that forms a convex curve that extends radially inward from an outer diameter surface of the body to an outer axial surface of the body; a center passage formed within the swirl generator body that extends from the inlet towards the outlet along the body-center axis; and a swirl passage formed at the outlet end of the swirl generator body, the swirl passage extending between the center passage and the curved outer boundary along a swirl passage axis such that a fluid entering the center passage from the inlet end exits the swirl generator body at the curved outer boundary, wherein the swirl passage axis forms an acute angle with the body-center axis, wherein the curved outer boundary of the swirl generator body is adjacent to and at least partially faces a sidewall of the evaporator passage. a swirl generator body that extends along a body-center axis between opposing inlet and outlet ends , the swirl generator body including a fluid inlet at the inlet end, wherein the swirl generator body includes an outer surface that, at the outlet end, defines an outlet region that includes a curved outer boundary that forms a convex curve that extends radially inward from an outer diameter surface of the body to an outer axial surface of the body; a center passage formed within the swirl generator body that extends from the inlet towards the outlet along the body-center axis; and a swirl passage formed at the outlet end of the swirl generator body, the swirl passage extending between the center passage and the curved outer boundary along a swirl passage axis such that a fluid entering the center passage from the inlet end exits the swirl generator body at the curved outer boundary, wherein the swirl passage axis forms an acute angle with the body-center axis, wherein the curved outer boundary of the swirl generator body is adjacent to and at least partially faces a sidewall of the evaporator passage. <EOS>