Second-order far field computational boundary conditions for inviscid duct flow problems
MetadataShow full item record
Highly accurate far field computational boundary conditions for inviscid, two-dimensional isentropic duct flow problems are developed from analytic solutions of the linearized, second-order Euler equations. The Euler equations are linearized about a constant pressure, rectilinear flow condition. The boundary procedure can be used with any numerical Euler solution method and allows computational boundaries to be located extremely close to the nonlinear region of interest. Numerical results are presented which show that the boundary conditions and far field analytic solutions provide a smooth transition across a computational boundary to the true far field conditions at infinity. The cost of upgrading first-order boundary conditions to second-order is slight
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
NPS Report NumberNPS-67-90-001CR
Showing items related by title, author, creator and subject.
Boundary conditions and stability of a perfectly matched layer for the elastic wave equation in first order form Duru, K.; Kozdon, JE; Kreiss, G. (2015);In computations, it is now common to surround artificial boundaries of a computational domain with a perfectly matched layer (PML) of finite thickness in order to prevent artificially reflected waves from contaminating a ...
Predictability of Japan/East Sea (JES) system to uncertain initial/lateral boundary conditions and surface winds Fang, Chin-Lung (Monterey, California. Naval Postgraduate School, 2003-09);Numerical ocean modeling usually composes various initial- and boundary-value problems. It integrates hydrodynamic and thermodynamic equations numerically with atmospheric forcing and boundary conditions (lateral and ...
Boundary waves and stability of the perfectly matched layer II: extensions to first order systems and numerical stability Duru, Kenneth; Kozdon, Jeremy E.; Kreiss, Gunilla (2012);In this paper we study the stability of the perfectly matched layer (PML) for the elastic wave equation in rst order form. The theory of temporal stability of initial value problems corresponding to the PML is well ...