A gas turbine engine, comprising: at least one turbine assembly formed from a rotor assembly, wherein the rotor assembly includes a plurality of rows of turbine blades extending radially outward from a rotor, wherein the plurality of rows of turbine blades are formed from an upstream row of turbine blades and at least one downstream row of turbine blades; at least one low pressure cooling system including: at least one cooling fluid supply channel with a cooling fluid exhaust outlet that is positioned downstream from at least one downstream row of turbine blade and discharges cooling fluid into a cooling fluid mixing chamber formed in part by at least one turbine blade on an upstream side of the cooling fluid mixing chamber and by at least one static structure on a downstream side; at least one bleed channel having a bleed channel exhaust outlet in communication with the cooling fluid mixing chamber, wherein the bleed channel exhaust outlet of the at least one bleed channel is positioned radially outward from the cooling fluid exhaust outlet of the at least one cooling fluid supply channel, wherein cooling fluids are exhausted through the bleed channel exhaust outlet into the cooling fluid mixing chamber to form a pocket of cooling fluids separating a hot gas path of the turbine engine from internal aspects of the rotor assembly. at least one turbine assembly formed from a rotor assembly, wherein the rotor assembly includes a plurality of rows of turbine blades extending radially outward from a rotor, wherein the plurality of rows of turbine blades are formed from an upstream row of turbine blades and at least one downstream row of turbine blades; at least one low pressure cooling system including: at least one cooling fluid supply channel with a cooling fluid exhaust outlet that is positioned downstream from at least one downstream row of turbine blade and discharges cooling fluid into a cooling fluid mixing chamber formed in part by at least one turbine blade on an upstream side of the cooling fluid mixing chamber and by at least one static structure on a downstream side; at least one bleed channel having a bleed channel exhaust outlet in communication with the cooling fluid mixing chamber, wherein the bleed channel exhaust outlet of the at least one bleed channel is positioned radially outward from the cooling fluid exhaust outlet of the at least one cooling fluid supply channel, wherein cooling fluids are exhausted through the bleed channel exhaust outlet into the cooling fluid mixing chamber to form a pocket of cooling fluids separating a hot gas path of the turbine engine from internal aspects of the rotor assembly. at least one cooling fluid supply channel with a cooling fluid exhaust outlet that is positioned downstream from at least one downstream row of turbine blade and discharges cooling fluid into a cooling fluid mixing chamber formed in part by at least one turbine blade on an upstream side of the cooling fluid mixing chamber and by at least one static structure on a downstream side; at least one bleed channel having a bleed channel exhaust outlet in communication with the cooling fluid mixing chamber, wherein the bleed channel exhaust outlet of the at least one bleed channel is positioned radially outward from the cooling fluid exhaust outlet of the at least one cooling fluid supply channel, wherein cooling fluids are exhausted through the bleed channel exhaust outlet into the cooling fluid mixing chamber to form a pocket of cooling fluids separating a hot gas path of the turbine engine from internal aspects of the rotor assembly.