Accession Number : AD0667788

Title :   A REYNOLDS EQUATION THEORY OF SOLAR DIFFERENTIAL ROTATION AND MERIDIONAL CIRCULATION,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Chiu,Yam T.

Report Date : MAR 1968

Pagination or Media Count : 40

Abstract : An incompressible hydrodynamic theory of solar photospheric rotation and circulation is formulated in terms of Reynolds equations. The dynamical hypothesis of local axisymmetric turbulence is used to reduce the number of turbulent stress tensor components. Partial solution yields a circulation pattern in good agreement with experiment, predicting a node at co-latitude 50 degrees. Using the equatorial rotation velocity, 2 x 10 to the 5th power cm/sec, and the surface differential to pure rotation ratio, -1/5, as input parameters, the circulation velocity components and the microturbulence root mean square velocities are found to be in good agreement with experiment. Furthermore, the angular momentum per unit volume along a radial direction is found to be constant. This result agrees with and lends support to the thesis, due to Biermann and Kieppenhahn, that circulation is driven by non-potential parts of the rotation velocity field. (Author)

Descriptors :   (*SOLAR ATMOSPHERE, HYDRODYNAMICS), ROTATION, TURBULENCE, INCOMPRESSIBLE FLOW, SOLAR DISTURBANCES, STRESSES, TENSOR ANALYSIS, DIFFERENTIAL EQUATIONS, MATHEMATICAL MODELS

Subject Categories : Astrophysics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE