# flow equation

## flow equation

[′flō i‚kwā·zhən]
(fluid mechanics)
Equation for the calculation of fluid (gas, vapor, liquid) flow through conduits or channels; consists of an interrelation of fluid properties (such as density or viscosity), environmental conditions (such as temperature or pressure), and conduit or channel geometry and conditions (such as diameter, cross-sectional shape, or surface roughness).
References in periodicals archive ?
The main objective of the OPF problem is to optimize a chosen objective function such as fuel cost, voltage profile improvement, voltage stability enhancement, through optimal adjustment of power system control variable while at the same time satisfying system operation condition with power flow equation and inequality constraints [1-4].
Therefore, the simplified flow equation as shown in Equation (4) was used to replicate the second flow scenario.
In fact, they say, the solution of the non-linear flow equation leads to a diagonalization of Hamiltonian operators in boson quantum field theory that are quadratic in the field.
According to different boundary conditions and parameters, the novel slip model, and the flow equation were transformed into the no-slip model, the adsorption-desorption model, the entanglement-disentanglement model, the lubrication layer slip model, and Z-W slip model.
The flow equation is based on the step structure of the cushion structure.
g](t) of the Ricci flow equation (4) is called "Ricci soliton" if there exists a positive function [phi](t) and a 1-parameter family of diffeomorphisms [psi](t) : [bar.
Technicians can be proactive in avoiding issues by seeing how each data point fits into an overall flow equation.
If the mean velocity and area at the hood face can be ascertained, then the basic flow equation can be solved [Q = U A] (ACGIH, 2004).
But a unique term can be added to (3) that generalises the flow equation, but also preserves the Keplerian nature of the planetary motions that underlie Newton's gravity formalisation:
The flow equation (10) coupled with energy equation (15) constitute a set of highly nonlinear differential equations.
These standard forms of the unsaturated flow equation may be identified as: the '[psi]-based' form, the '[theta]-based' form, and the 'mixed form.
On the other hand, the significant and positive sign found in the flow equation indicates that the new crop of FDIs to Africa might be market and resource seeking.

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