the velocity-dissipation joint-pdf [5,6]. Solutions of these equations have been successfully obtained using Monte A particle method which applies the probability density function (PDF) method to compressible turbulent flows is presented. Solution Carlo algorithms in which the fluid is represented b
Smoothed particle hydrodynamics calculations of stellar interactions
โ Scribed by Frederic A. Rasio; James C. Lombardi Jr.
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 371 KB
- Volume
- 109
- Category
- Article
- ISSN
- 0377-0427
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โฆ Synopsis
Smoothed particle hydrodynamics is a multidimensional Lagrangian method of numerical hydrodynamics that has been used to tackle a wide variety of problems in astrophysics. Here we develop the basic equations of the SPH scheme, and we discuss some of its numerical properties and limitations. As an illustration of typical astrophysical applications, we discuss recent calculations of stellar interactions, including collisions between main sequence stars and the coalescence of compact binaries.
๐ SIMILAR VOLUMES
Smoothed particle hydrodynamics is reformulated in terms of the convolution of the original hydrodynamics equations, and the new evolution equations for the particles are derived. The same evolution equation of motion is also derived using a new action principle. The force acting on each particle is
We have performed a series of systematic tests to evaluate quantitatively the effects of spurious transport in three-dimensional smoothed particle hydrodynamics (SPH) calculations. Our tests investigate (i) particle diffusion, (ii) shock heating, (iii) numerical viscosity, and (iv) angular momentum
## Various methods of obtaining an objective measure of the quality To some extent it should not matter what kernel is used and accuracy of the SPH kernel are addressed. Since the kernel is in SPH as long as basic requirements are met. This is the key element in the SPH methodology, this should be
## Abstract This paper presents a __Smoothed Particle Hydrodynamics__ (SPH) solution for the __KelvinโHelmholtz Instability__ (KHI) problem of an incompressible twoโphase immiscible fluid in a stratified inviscid shear flow with interfacial tension. The timeโdependent evolution of the twoโfluid int