The equations of energy conservation, solute

mass conservation and water

mass conservation are listed in Eqs.

M[C.sub.2] is calculated by the

mass conservation of water in wood chips in Equation 6.

It discusses the classification, characteristics, working principle, and control problem of the PEM fuel cell; the hardware configuration of the 1kW hydrogen-air PEM fuel cell; modeling of the hydrogen-air PEM fuel cell, mainly built by mechanism analysis methods implementing electrochemical,

mass conservation, and other chemical or physical principles; and the control methodology of the PEM fuel cell with and without load current feedback.

This paper compares the specification of formulations of acrylic resin containing nanoclay by monitoring their distribution of nanoclay, optical property, the molecular weight ([M.sub.w]), polydispersity index (PDI), solution viscosity, and

mass conservation.

(1) In accordance with the

mass conservation law and the momentum conservation law of the water and sand phases, and the porosity compressibility equation of the broken rocks, basic equation, and partial auxiliary equations of the system were derived.

Compared to the new three-field formulation presented in [27, 31], the classic three-field formulation of Biot's consolidation model retains Darcy's law in order to guarantee fluid

mass conservation. A four-field formulation in which the stress tensor is kept as an additional variable in the system has been proposed in [26], and the error analysis there is robust with respect to [lambda] but not uniform with respect to other parameters such as [tau] and [kappa].

Mass Conservation. In the

mass conservation equation (Equation (1)), the transient, convective, and source terms are related to the volumetric fraction of the secondary phase "q." Making the calculation for the secondary phases present in the flow, by volumetric completion, the conservative values for the primary phase "p" are obtained:

According to the law of

mass conservation, the continuity equation of gas seepage in fracture can be obtained [13-15]:

As a result, steady state governing equations are used for exhaust gas and air-born soot particle, and the transient

mass conservation of deposit mass is considered as given in equation (1).

Such seven-equation two-pressure model consists of two

mass conservation equations, two momentum conservation equations, two energy conservation equations, and a volume fraction transport equation.

On the other hand, the Peregrine system features exact

mass conservation while

mass conservation in the BBM-BBM type systems is only approximate.

The

mass conservation of particles and momentum, energy equations of the flow are solved in this model.