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Push-forward representations of fluid moments associated with reduced kinetic models

Miyato, Naoaki; Scott, B. D.*

Reduced kinetic models such as the gyrokinetic model are constructed by a phase space transformation from the particle phase space with the particle position and the particle velocity to a guiding-centre phase space. Usual particle fluid moments are expressed in terms of fluid moments defined as integrals in the guiding-centre phase space. It is called the push-forward representation. In this paper, we discuss differences and common points among the representation associated with a modified guiding-centre model for flowing plasmas which we derived recently, the one associated with the conventional model for flowing plasmas and the standard one without fast flow.



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