Results 251 to 260 of about 11,150,415 (302)

Computational Fluid Dynamic Study of a High-Pressure External Gear Pump

open access: yes, 2017
Emma Frosina   +7 more
core  

Alternatives to the Power-Law Fluid Model for Crosslinked Fluids

Society of Petroleum Engineers Journal, 1985
AbstractMeasuring the rheological properties of crosslinked fracturing fluids is difficult but important. Fluid properties play a key role in the determination of the final geometry of die created fracture and in the distribution of proppant within the fracture; therefore, an accurate knowledge of these parameters is necessary for optimum treatment ...
J. E. Cloud, P. E. Clark
openaire   +1 more source

Control of power-law fluids

Nonlinear Analysis: Theory, Methods & Applications, 1985
The paper is concerned with initial boundary value problems for the scalar equation \(u_ t(x,t)+A(u)(x,t)=v(t)\phi (x)\) in \(\Omega\) x(0,T)\(\subset {\mathbb{R}}^ 4,\) where \(A(w)=-\nabla \cdot (| \nabla w|^{p-2}\cdot \nabla w)\), \(\phi\) is given, and v is an L 2-control that is sought to minimize \[ J(v)=\int_{\Omega}| u(\cdot,T)- z(\cdot)| \quad
openaire   +1 more source

Entrance effects for power‐law fluid

Polymer Engineering & Science, 1994
AbstractEntrance pressure losses for the creeping flow of a power‐law fluid are calculated for an abrupt contraction of ratio 2, 4, 8 and ∞ for both the axisymmetric and planar cases using P2P1 and PP1 finite elements. Contrary to some earlier findings in the literature, the entrance pressure loss obtained by using the two different types of finite ...
Mahesh Gupta, C. A. Hieber, K. K. Wang
openaire   +1 more source

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