Kinetic theory of quantum ideal gases. / Teoria cinética dos gases ideias quânticos.
AUTOR(ES)
Claudio Henrique Lepienski
DATA DE PUBLICAÇÃO
1993
RESUMO
The aim of this work is the determination of the coefficients of shear viscosity and thermal conductivity of quantum ideal gases. In the calculation of the transport coefficients two aspects have been taken into account: a classical statistical with quantum cross-sections and a quantum statistical with quantum cross-sections. In the first case, an alternative method is used for the determination of the successive approximations (up to the fifth order) to the transport coefficients of the gases helium 4, helium 3, para-hydrogen, ortho-hidrogen. In the case of quantum statistical a theory based on method of moments of Grad and on the Uehling-Uhlenbeck equation is developed in order to determine the algebraic expressions to the transport coefficients. This theory is based on 13 moments of density, velocity, pressure tensor and heat flux. From the knowledge of the distribution function the constitutive equations are determinate and the transport coefficients follow from an iterative method akin to the 11axwellian procedure.
ASSUNTO(S)
hélio 4 kinetic theory helim 4 orto-hidrogênio coeficientes de condutividade térmica e de viscosidade de cisalhamento gás ideal quântico hélio 3 para-hidrogênio ortho-hydrogen aproximações sucessivas para-hydrogen low temperatures quantum ideal gas sucessive approximations coefficients of shear viscosity and thermal conductivity baixas temperaturas helium 3 teoria cinética
