Table of Contents
What is a homogeneous model?
1 Homogeneous model. The homogeneous model is described by the differential equation: (4.5) where a > 0 is constant and Cs is the limit concentration achieved after the solute is completely dissolved or the solution is saturated.
What does homogeneous flow mean?
Indeed, the term homogeneous flow is sometimes used to denote a flow with negligible relative motion. Many bubbly or mist flows come close to this limit and can, to a first approximation, be considered to be homoge- neous. In the present chapter some of the properties of homogeneous flows will be considered.
What is two phase model?
Two-phase models are used for investigations of geotechnical problems in which the mechanical behaviour of soil is affected significantly by pore fluid. The field of application of the two-phase model is very versatile.
What is critical flow model?
The model is based on disseminating/ channeling information of critical value (which by its very nature would not be disclosed by those involved in bad governance) to the targeted audience (such as the media, opposition parties) or into the wider public domain through the use of ICT and convergent media.
What is a homogeneous fluid?
Strictly, a fluid with uniform properties throughout, but meteorologists sometimes designate as homogeneous a fluid with constant density. No fluid is homogeneous in an absolute sense. Compare heterogeneous fluid. …
What do you call the mixture that look the same throughout?
A homogeneous mixture is a type of mixture that is considered to be the same throughout. Therefore, each part of the mixture seems to be the same. Examples of homogeneous mixtures are apple juice and the air. In liquid form, homogeneous mixtures are generally called solutions.
What is two phase flow pipe?
Two-phase flow is a flow in which two different aggregate states of a substance or of two different substances are simultaneously present. The possible combinations include gaseous/liquid (see Gas content of fluid handled), gaseous/solid and liquid/solid (see Solids transport).
What are the different variations of two phase flow are?
Two-phase flow can be solid-liquid flow, liquid-liquid flow, gas-solid flow, and gas-liquid flow.
What is the homogeneous equilibrium model?
One of the most widely used critical flow models is the Homogeneous Equilibrium Model (HEM) . This is primarily due to its simplicity. The HEM assumes there exists no difference between the liquid and vapor velocities within a continuum. Also, the two-phases are assumed to exist at the same temperature and pressure.
What is critical flow pressure?
The flow rate that corresponds to the limiting velocity is known as the critical flow rate. The absolute pressure ratio of the pressure at the nozzle exit at sonic velocity (Pcf) to the inlet pressure (Pi) is called pressure ratio. Pcf is known as the critical flow pressure.