Search for dissertations about: "stokes formula"

Showing result 1 - 5 of 11 swedish dissertations containing the words stokes formula.

2. 1. Least squares modification of Stokes formula with application to the Estonian geoid

   Author : Artu Ellmann; KTH; []
   Keywords : geoid; stokes formula; least sequares modification; total topographic correction; total atmospheric correction; gps levelling;

   Abstract : Many applications in geodesy,geophysics and engineering require physically defined heightsrelated to an equipotential surface of the Earth, thegeoid.During the last two decades theincreased need for refined geoid models has been driven by thedemands of users of GPS, who nowadays must transformGPS-derived geodetic heights into orthometric heights, makingthem compatible with the local vertical datum. READ MORE

4. 2. The geoid for the Baltic countries determined by the least squares modification of Stokes´formula

   Author : Artu Ellmann; KTH; []
   Keywords : geoid; Stokes;

   Abstract : Precise knowledge of the geoid contributes to the studies ofthe Earth’s interior, the long-term geophysical processesand to oceanography. An accurate regional geoid model, inparticular, enables the user in many cases to replace thetraditional height determination techniques by faster and morecost-effective GPS-levelling. READ MORE

5. 3. Precise Gravimetric Geoid Model for Iran Based on GRACE and SRTM Data and the Least-Squares Modification of Stokes’ Formula : with Some Geodynamic Interpretations

   Author : Ramin Kiamehr; Lars Sjöberg; Martin Vermeer; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Gravity database; least-squares modification of Stokes; geoid determination; SRTM; GRACE; GPS levelling; density variation model; height datum; geodynamics; Iran; Earth sciences; Geovetenskap;

   Abstract : Iran is one of the most complicated areas in the world from the view of rough topography, tectonic activity, large lateral density and geoidal height variations. The computation of a regional gravimetric geoid model with high accuracy in mountainous regions, especially with sparse data, is a difficult task that needs a special attention to obtain reliable results which can meet the needs of the today geodetic community. READ MORE

6. 4. Geoid determination over Ethiopia with emphasis on downward continuation of gravity anomailes

   Author : Addisu Hunegnaw; KTH; []
   Keywords : geoidal height; modified stokes formula; downward continuation; phillips-tikhonov regularization; wavelet analysis; lateral density variations;

   Abstract : .... READ MORE

7. 5. Prediction of Wing Section Lift and Drag from Numerical Solutions of the Navier-Stokes Equations

   Author : Björn Regnström; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; airfoil; incompresible flow; computational fluid dynamics; transition; numerical analysis; boundary layer stability;

   Abstract : A Navier-Stokes finite difference method is developed and applied to two-dimensional, incompressible, viscous flow around wing sections at medium to high Reynolds numbers. An important feature of such flows is laminar boundary layers with spatially amplified Tollmien-Schlichting waves initiating transition to turbulence. READ MORE