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**Mean inter-particle distance**— (or mean inter particle separation) is the mean distance between microscopic particles (usually atoms or molecules) in a macroscopic body. Contents 1 Ambiguity 2 Ideal gas 2.1 Nearest neighbor distribution … Wikipedia**Dissipative particle dynamics**— (DPD) is a stochastic simulation technique for simulating the dynamic and rheological properties of simple and complex fluids. It was initially devised by Hoogerbrugge and Koelman [1][2] to avoid the lattice artifacts of the so called lattice gas … Wikipedia**Powder metallurgy**— is the process of blending fine powdered materials, pressing them into a desired shape (compacting), and then heating the compressed material in a controlled atmosphere to bond the material (sintering). The powder metallurgy process generally… … Wikipedia**Colloidal crystal**— A colloidal crystal is an ordered array of colloid particles, analogous to a standard crystal whose repeating subunits are atoms or molecules.[1] A natural example of this phenomenon can be found in the gem opal, where spheres of silica assume a… … Wikipedia**Van der Waals equation**— The van der Waals equation is an equation of state for a fluid composed of particles that have a non zero size and a pairwise attractive inter particle force (such as the van der Waals force.) It was derived by Johannes Diderik van der Waals in… … Wikipedia**Virial theorem**— In mechanics, the virial theorem provides a general equation relating the average over time of the total kinetic energy, , of a stable system consisting of N particles, bound by potential forces, with that of the total potential energy, , where… … Wikipedia**Kinetic theory**— [ temperature of an ideal monatomic gas is a measure related to the average kinetic energy of its atoms as they move. In this animation, the size of helium atoms relative to their spacing is shown to scale under 1950 atmospheres of pressure.… … Wikipedia**Magnetorheological fluid**— Continuum mechanics … Wikipedia**H-theorem**— In thermodynamics, the H theorem, introduced by Boltzmann in 1872, describes the increase in the entropy of an ideal gas in an irreversible process, by considering the Boltzmann equation.It appears to predict an irreversible increase in entropy,… … Wikipedia**Constraint algorithm**— In mechanics, a constraint algorithm is a method for satisfying constraints for bodies that obey Newton s equations of motion. There are three basic approaches to satisfying such constraints: choosing novel unconstrained coordinates ( internal… … Wikipedia