Ernest Roetman – författare

Introduction to the Potential Theory for the Time-Dependent Stokes System is made up of two parts. The first part deals with a careful presentation of the principles on which the physical problems are based. The fluids under consideration are assumed to be incompressible and the equations so obtained are nonlinear. The linear problems are obtained by introducing characteristic parameters and so determining which terms can be neglected. The authors feel it is important that when a mathematical problem is solved, one knows precisely which problem has actually been solved. The second part deals with the mathematical treatment of the problems derived in the first part. These equations are linear and time dependent. The first step is the construction of a fundamental solution for the equations involved. They are analogous to the fundamental solutions for the potential and heat equations commonly found in the mathematical and engineering literature. The fundamental solution is used as in classical potential theory to construct solutions to initial and certain boundary value problems for the linear Stokes equations.FeaturesCareful presentation of the kinematics of fluid dynamicsDerivation of the basic equations from first principlesRigorous treatment of the linearization of the equations leading to Reynolds and Euler numbersDerivation of the fundamental solutions for the Stokes and Oseen equationsExplicit solutions to the Stokes and Oseen equations for initial value problemsPotential theory for the Stokes systemComparison of compressible and incompressible fluids.