Talk:Smoothed-particle hydrodynamics

Stabilisation section
If there is going to be a section about artificial viscosity, we can do better than the Ata paper as the main reference. 134.178.63.3 (talk) 05:03, 17 September 2008 (UTC) I removed the Ata section - it just seemed like self promotion to me. There are hundreds of SPH articles out there, and it makes more sense to reference Morris work on stability or Libersky's work on boundaries than a relatively obscure recent paper. The 'invited review' one looks a bit the same to me but I need to read it first. I'll try to work over the references list in the next few days. IMO Hoover, Liu and Liu, and the Monaghan review are the 3 'core' references.

Nvidia CUDA particles example
The particles example featured in the cuda sdk is not SPH. It is a mass-spring system. The reason it's so fast is because unlike in SPH you don't have to iterate over all particles at least twice, you can do it in a single iteration. It's actually a very simplistic system, inferior to SPH, and it shouldn't belong in the article. —Preceding unsigned comment added by 193.190.253.144 (talk) 23:01, 27 October 2008 (UTC) I removed the references. You're right it was a simple collision model, more like MD than SPH. 122.108.111.193 (talk) 11:07, 2 November 2008 (UTC)

Q: "integration by parts" or "differentiation by parts"
In the following sentence

"Similarly, the spatial derivative of a quantity can be obtained by using integration by parts to shift the del ( \nabla ) operator (...)"

it was used the expression "integration by parts". Since we are talking about del operator, shouldn't it be "differentiation by parts"?

Thanks! Capagot (talk) 22:17, 6 March 2008 (UTC)

No. There's no such thing as "differentiation by parts". Integration by parts is a consequence (loosely speaking) of the product rule of differentiation. Unless you're being lazy and just moving the del operator inside the sum, one needs to use integration by parts to generate the sph approximation for derivatives.

Ac1201 (talk) 00:35, 14 May 2008 (UTC)

hydrodynamics
an air bubbles rises from the bottom of a well where the temperature is 25 degrees Celsius, to the surface where the temperature 27 degrees Celsius. find the percent increase in volume of the bubble if the depth of the wall is 5 meter. atmospheric pressure is 101.528 kPa. — Preceding unsigned comment added by 203.87.162.3 (talk) 09:38, 13 October 2011 (UTC)

hydrodynamics
In an article on dynamics, it would be helpful to outline an explicit example of the basis for calculations of particle forces and accelerations. A compressible inviscid fluid might be a good choice. Eric Drexler (talk) 15:08, 16 March 2013 (UTC)