Pressure-volume equation of state for solidsSaxena, S. K.JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDSSaxena, S. K. (2004). Pressure-volume equation of state for solids. J. Phys. Chem. Solids, 65, 1561-1563. http://dx.doi.org/10.1016/j.jpcs.2004.02.003...
Having air gaps between the foam layers increased the pressure drop, with the first gap causing a lot of this pressure drop increase, and causing earlier transition to turbulent flow. The Forchheimer relation was found to be applicable for describing the pressure drop of this study, albeit with...
The enthalpy (H) of a system is the measure of its internal energy while pressure and volume are constant, and enthalpy change {eq}(\Delta H) {/eq} (also called enthalpy of the reaction) refers to how this quantity varies for a material when it experiences a chemical or physical change...
If a and b are set to zero, Eq. (2.1) reduces to an ideal gas EOS. Eq. (2.1) is usually written as: (2.2)P=RTV−b−aV2 To find the molar volume from pressure and temperature, this equation may be rearranged in the following form: (2.3)V3−(b+RTP)V2+(aP)V−abP=0...
A pipeline consists of sections of different cross-sections. Oil flowing in the pipeline fills all cross-sections completely. A section Y of the pipeline has a cross-sectional area of 1.15 m2and the velocity magnitude at that point is 1.8 m/s. Determine the volume delivered to a tank every...
aIn this equation for force balance on the control volume the acceleration term is equal to the static pressure and frictional forces acting on the control volume. 在这个等式为力量平衡在控制体积加速度期限与行动在控制体积的静压和摩擦力是相等的。 [translate] ...
where P is fluid pressure, f is the density of the fresh water, g the module of gravity and z the elevation. It has to be remarked that elevation is the opposite direction of gravity. Density is considered only as a function of the transport state variable, , which can be either temper...
The Ergun equation (Ergun, 1952) is a reference for calculation of pressure losses through packed beds. This equation associates the Kozeny-Carman equation which was developed by Carman (1937), from the work of Kozeny (1927), for lowly to moderately porous media, and the Burke-Plummer equation...
The latter is a Smoluchowski equation for the rotational diffusion characterized by a constant of diffusion DA and DB for the A and Β isomers, respectively, where R is the rotational operator, k is the Boltzmann constant, Τ is the absolute temperature, and UA,B is an interaction energy to...
ambient pressure. Unlike more iron-rich alloys, the excess volume of mixing of Fe18Pt82(∼0.21 cm3/mol) remains nearly constant across the examined pressure range. Estimates of the excess Gibbs free energy suggest diminishing non-ideal contributions to thermodynamic activities as pressure increases...